./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.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 1a770e072308583e36326282bebae23c1c98c748d42f3621fe7141c74e78b303 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 02:14:13,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 02:14:13,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 02:14:13,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 02:14:13,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 02:14:13,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 02:14:13,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 02:14:13,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 02:14:13,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 02:14:13,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 02:14:13,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 02:14:13,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 02:14:13,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 02:14:13,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 02:14:13,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 02:14:13,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 02:14:13,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 02:14:13,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 02:14:13,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 02:14:13,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 02:14:13,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 02:14:13,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 02:14:13,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 02:14:13,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 02:14:13,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 02:14:13,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 02:14:13,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 02:14:13,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 02:14:13,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 02:14:13,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 02:14:13,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 02:14:13,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 02:14:13,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 02:14:13,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 02:14:13,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 02:14:13,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 02:14:13,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 02:14:13,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 02:14:13,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 02:14:13,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 02:14:13,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 02:14:13,897 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 02:14:13,919 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 02:14:13,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 02:14:13,921 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 02:14:13,921 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 02:14:13,921 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 02:14:13,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 02:14:13,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 02:14:13,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 02:14:13,923 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 02:14:13,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 02:14:13,924 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 02:14:13,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 02:14:13,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 02:14:13,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 02:14:13,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 02:14:13,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 02:14:13,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 02:14:13,925 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 02:14:13,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 02:14:13,925 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 02:14:13,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 02:14:13,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 02:14:13,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 02:14:13,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 02:14:13,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:14:13,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 02:14:13,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 02:14:13,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 02:14:13,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 02:14:13,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 02:14:13,927 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 02:14:13,927 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 02:14:13,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 02:14:13,927 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a770e072308583e36326282bebae23c1c98c748d42f3621fe7141c74e78b303 [2021-12-28 02:14:14,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 02:14:14,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 02:14:14,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 02:14:14,203 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 02:14:14,204 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 02:14:14,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c [2021-12-28 02:14:14,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/349069f05/431f64e339a14eba998f74a478810450/FLAG117d11eaa [2021-12-28 02:14:14,864 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 02:14:14,865 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c [2021-12-28 02:14:14,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/349069f05/431f64e339a14eba998f74a478810450/FLAG117d11eaa [2021-12-28 02:14:15,232 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/349069f05/431f64e339a14eba998f74a478810450 [2021-12-28 02:14:15,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 02:14:15,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 02:14:15,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 02:14:15,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 02:14:15,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 02:14:15,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:14:15" (1/1) ... [2021-12-28 02:14:15,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39559bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:14:15, skipping insertion in model container [2021-12-28 02:14:15,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:14:15" (1/1) ... [2021-12-28 02:14:15,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 02:14:15,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 02:14:15,539 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/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c[6354,6367] [2021-12-28 02:14:15,549 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/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c[7196,7209] [2021-12-28 02:14:16,073 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:14:16,081 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 02:14:16,112 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/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c[6354,6367] [2021-12-28 02:14:16,117 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/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c[7196,7209] [2021-12-28 02:14:16,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:14:16,435 INFO L208 MainTranslator]: Completed translation [2021-12-28 02:14:16,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:14:16 WrapperNode [2021-12-28 02:14:16,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 02:14:16,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 02:14:16,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 02:14:16,437 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 02:14:16,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:14:16" (1/1) ... [2021-12-28 02:14:16,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:14:16" (1/1) ... [2021-12-28 02:14:16,837 INFO L137 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4976 [2021-12-28 02:14:16,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 02:14:16,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 02:14:16,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 02:14:16,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 02:14:16,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:14:16" (1/1) ... [2021-12-28 02:14:16,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:14:16" (1/1) ... [2021-12-28 02:14:16,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:14:16" (1/1) ... [2021-12-28 02:14:16,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:14:16" (1/1) ... [2021-12-28 02:14:17,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:14:16" (1/1) ... [2021-12-28 02:14:17,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:14:16" (1/1) ... [2021-12-28 02:14:17,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:14:16" (1/1) ... [2021-12-28 02:14:17,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 02:14:17,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 02:14:17,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 02:14:17,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 02:14:17,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:14:16" (1/1) ... [2021-12-28 02:14:17,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:14:17,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:14:17,252 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) [2021-12-28 02:14:17,263 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 [2021-12-28 02:14:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 02:14:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 02:14:17,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 02:14:17,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 02:14:17,461 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 02:14:17,463 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 02:14:20,224 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 02:14:20,240 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 02:14:20,241 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 02:14:20,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:14:20 BoogieIcfgContainer [2021-12-28 02:14:20,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 02:14:20,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 02:14:20,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 02:14:20,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 02:14:20,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 02:14:15" (1/3) ... [2021-12-28 02:14:20,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd54e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:14:20, skipping insertion in model container [2021-12-28 02:14:20,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:14:16" (2/3) ... [2021-12-28 02:14:20,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd54e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:14:20, skipping insertion in model container [2021-12-28 02:14:20,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:14:20" (3/3) ... [2021-12-28 02:14:20,249 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c [2021-12-28 02:14:20,252 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 02:14:20,252 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 02:14:20,293 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 02:14:20,299 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 02:14:20,299 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 02:14:20,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 878 states, 875 states have (on average 1.904) internal successors, (1666), 877 states have internal predecessors, (1666), 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) [2021-12-28 02:14:20,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-28 02:14:20,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:20,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:14:20,332 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:20,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:20,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2057058801, now seen corresponding path program 1 times [2021-12-28 02:14:20,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:20,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832785647] [2021-12-28 02:14:20,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:20,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:20,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:20,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:20,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832785647] [2021-12-28 02:14:20,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832785647] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:14:20,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:14:20,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 02:14:20,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419255417] [2021-12-28 02:14:20,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:14:20,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:14:20,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:20,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:14:20,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:14:20,515 INFO L87 Difference]: Start difference. First operand has 878 states, 875 states have (on average 1.904) internal successors, (1666), 877 states have internal predecessors, (1666), 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 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-12-28 02:14:23,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:14:23,652 INFO L93 Difference]: Finished difference Result 2489 states and 4794 transitions. [2021-12-28 02:14:23,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:14:23,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-12-28 02:14:23,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:14:23,679 INFO L225 Difference]: With dead ends: 2489 [2021-12-28 02:14:23,679 INFO L226 Difference]: Without dead ends: 1563 [2021-12-28 02:14:23,684 INFO L932 BasicCegarLoop]: 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 [2021-12-28 02:14:23,687 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 950 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:14:23,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [950 Valid, 201 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1058 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-28 02:14:23,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2021-12-28 02:14:23,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1563. [2021-12-28 02:14:23,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1561 states have (on average 1.862908392056374) internal successors, (2908), 1562 states have internal predecessors, (2908), 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) [2021-12-28 02:14:23,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2908 transitions. [2021-12-28 02:14:23,779 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2908 transitions. Word has length 7 [2021-12-28 02:14:23,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:14:23,780 INFO L470 AbstractCegarLoop]: Abstraction has 1563 states and 2908 transitions. [2021-12-28 02:14:23,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-12-28 02:14:23,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2908 transitions. [2021-12-28 02:14:23,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-28 02:14:23,781 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:23,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:14:23,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 02:14:23,782 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:23,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:23,783 INFO L85 PathProgramCache]: Analyzing trace with hash 157814817, now seen corresponding path program 1 times [2021-12-28 02:14:23,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:23,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814747340] [2021-12-28 02:14:23,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:23,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:23,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:23,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:23,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814747340] [2021-12-28 02:14:23,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814747340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:14:23,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:14:23,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 02:14:23,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502655869] [2021-12-28 02:14:23,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:14:23,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 02:14:23,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:23,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 02:14:23,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:14:23,858 INFO L87 Difference]: Start difference. First operand 1563 states and 2908 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-12-28 02:14:23,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:14:23,909 INFO L93 Difference]: Finished difference Result 1639 states and 3024 transitions. [2021-12-28 02:14:23,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 02:14:23,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 26 [2021-12-28 02:14:23,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:14:23,915 INFO L225 Difference]: With dead ends: 1639 [2021-12-28 02:14:23,915 INFO L226 Difference]: Without dead ends: 1599 [2021-12-28 02:14:23,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:14:23,919 INFO L933 BasicCegarLoop]: 1529 mSDtfsCounter, 58 mSDsluCounter, 4566 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 6095 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:14:23,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 6095 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:14:23,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2021-12-28 02:14:23,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1563. [2021-12-28 02:14:23,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1561 states have (on average 1.8526585522101218) internal successors, (2892), 1562 states have internal predecessors, (2892), 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) [2021-12-28 02:14:23,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2892 transitions. [2021-12-28 02:14:23,947 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2892 transitions. Word has length 26 [2021-12-28 02:14:23,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:14:23,947 INFO L470 AbstractCegarLoop]: Abstraction has 1563 states and 2892 transitions. [2021-12-28 02:14:23,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-12-28 02:14:23,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2892 transitions. [2021-12-28 02:14:23,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-28 02:14:23,950 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:23,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:14:23,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 02:14:23,956 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:23,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:23,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1324654887, now seen corresponding path program 1 times [2021-12-28 02:14:23,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:23,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285908536] [2021-12-28 02:14:23,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:23,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:23,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:23,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:23,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285908536] [2021-12-28 02:14:23,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285908536] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:14:23,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:14:23,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:14:23,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041727598] [2021-12-28 02:14:23,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:14:23,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:14:23,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:23,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:14:23,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:14:23,999 INFO L87 Difference]: Start difference. First operand 1563 states and 2892 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2021-12-28 02:14:24,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:14:24,035 INFO L93 Difference]: Finished difference Result 1629 states and 2994 transitions. [2021-12-28 02:14:24,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:14:24,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2021-12-28 02:14:24,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:14:24,040 INFO L225 Difference]: With dead ends: 1629 [2021-12-28 02:14:24,040 INFO L226 Difference]: Without dead ends: 1593 [2021-12-28 02:14:24,041 INFO L932 BasicCegarLoop]: 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 [2021-12-28 02:14:24,041 INFO L933 BasicCegarLoop]: 1559 mSDtfsCounter, 1485 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:14:24,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 1613 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:14:24,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2021-12-28 02:14:24,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1591. [2021-12-28 02:14:24,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1589 states have (on average 1.8477029578351165) internal successors, (2936), 1590 states have internal predecessors, (2936), 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) [2021-12-28 02:14:24,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 2936 transitions. [2021-12-28 02:14:24,063 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 2936 transitions. Word has length 41 [2021-12-28 02:14:24,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:14:24,063 INFO L470 AbstractCegarLoop]: Abstraction has 1591 states and 2936 transitions. [2021-12-28 02:14:24,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2021-12-28 02:14:24,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 2936 transitions. [2021-12-28 02:14:24,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-28 02:14:24,065 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:24,065 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:14:24,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 02:14:24,065 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:24,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:24,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1376027727, now seen corresponding path program 1 times [2021-12-28 02:14:24,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:24,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428317986] [2021-12-28 02:14:24,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:24,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:24,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:24,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428317986] [2021-12-28 02:14:24,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428317986] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:14:24,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:14:24,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 02:14:24,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603614002] [2021-12-28 02:14:24,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:14:24,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 02:14:24,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:24,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 02:14:24,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:14:24,113 INFO L87 Difference]: Start difference. First operand 1591 states and 2936 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2021-12-28 02:14:24,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:14:24,203 INFO L93 Difference]: Finished difference Result 1975 states and 3536 transitions. [2021-12-28 02:14:24,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 02:14:24,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 41 [2021-12-28 02:14:24,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:14:24,210 INFO L225 Difference]: With dead ends: 1975 [2021-12-28 02:14:24,210 INFO L226 Difference]: Without dead ends: 1911 [2021-12-28 02:14:24,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:14:24,211 INFO L933 BasicCegarLoop]: 1511 mSDtfsCounter, 4709 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4709 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:14:24,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4709 Valid, 1779 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:14:24,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2021-12-28 02:14:24,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1653. [2021-12-28 02:14:24,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1651 states have (on average 1.8358570563294974) internal successors, (3031), 1652 states have internal predecessors, (3031), 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) [2021-12-28 02:14:24,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 3031 transitions. [2021-12-28 02:14:24,241 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 3031 transitions. Word has length 41 [2021-12-28 02:14:24,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:14:24,241 INFO L470 AbstractCegarLoop]: Abstraction has 1653 states and 3031 transitions. [2021-12-28 02:14:24,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2021-12-28 02:14:24,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 3031 transitions. [2021-12-28 02:14:24,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-28 02:14:24,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:24,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:14:24,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 02:14:24,243 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:24,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:24,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1902982177, now seen corresponding path program 1 times [2021-12-28 02:14:24,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:24,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886104087] [2021-12-28 02:14:24,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:24,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:24,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:24,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:24,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886104087] [2021-12-28 02:14:24,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886104087] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:14:24,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:14:24,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:14:24,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592874183] [2021-12-28 02:14:24,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:14:24,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:14:24,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:24,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:14:24,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:14:24,278 INFO L87 Difference]: Start difference. First operand 1653 states and 3031 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-12-28 02:14:24,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:14:24,311 INFO L93 Difference]: Finished difference Result 1840 states and 3318 transitions. [2021-12-28 02:14:24,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:14:24,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2021-12-28 02:14:24,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:14:24,318 INFO L225 Difference]: With dead ends: 1840 [2021-12-28 02:14:24,318 INFO L226 Difference]: Without dead ends: 1714 [2021-12-28 02:14:24,319 INFO L932 BasicCegarLoop]: 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 [2021-12-28 02:14:24,321 INFO L933 BasicCegarLoop]: 1514 mSDtfsCounter, 1469 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:14:24,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1469 Valid, 1565 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:14:24,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2021-12-28 02:14:24,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1712. [2021-12-28 02:14:24,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1712 states, 1710 states have (on average 1.8239766081871345) internal successors, (3119), 1711 states have internal predecessors, (3119), 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) [2021-12-28 02:14:24,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 3119 transitions. [2021-12-28 02:14:24,358 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 3119 transitions. Word has length 43 [2021-12-28 02:14:24,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:14:24,361 INFO L470 AbstractCegarLoop]: Abstraction has 1712 states and 3119 transitions. [2021-12-28 02:14:24,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-12-28 02:14:24,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 3119 transitions. [2021-12-28 02:14:24,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-28 02:14:24,365 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:24,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:14:24,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 02:14:24,366 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:24,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:24,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1836488665, now seen corresponding path program 1 times [2021-12-28 02:14:24,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:24,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358020988] [2021-12-28 02:14:24,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:24,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:24,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:24,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358020988] [2021-12-28 02:14:24,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358020988] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:14:24,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:14:24,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 02:14:24,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385154286] [2021-12-28 02:14:24,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:14:24,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 02:14:24,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:24,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 02:14:24,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:14:24,511 INFO L87 Difference]: Start difference. First operand 1712 states and 3119 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2021-12-28 02:14:24,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:14:24,604 INFO L93 Difference]: Finished difference Result 1897 states and 3401 transitions. [2021-12-28 02:14:24,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 02:14:24,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 43 [2021-12-28 02:14:24,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:14:24,621 INFO L225 Difference]: With dead ends: 1897 [2021-12-28 02:14:24,621 INFO L226 Difference]: Without dead ends: 1714 [2021-12-28 02:14:24,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-28 02:14:24,622 INFO L933 BasicCegarLoop]: 1529 mSDtfsCounter, 4476 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4476 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:14:24,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4476 Valid, 1633 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:14:24,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2021-12-28 02:14:24,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1712. [2021-12-28 02:14:24,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1712 states, 1710 states have (on average 1.8222222222222222) internal successors, (3116), 1711 states have internal predecessors, (3116), 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) [2021-12-28 02:14:24,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 3116 transitions. [2021-12-28 02:14:24,699 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 3116 transitions. Word has length 43 [2021-12-28 02:14:24,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:14:24,700 INFO L470 AbstractCegarLoop]: Abstraction has 1712 states and 3116 transitions. [2021-12-28 02:14:24,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2021-12-28 02:14:24,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 3116 transitions. [2021-12-28 02:14:24,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-28 02:14:24,700 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:24,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:14:24,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 02:14:24,701 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:24,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:24,701 INFO L85 PathProgramCache]: Analyzing trace with hash -47574589, now seen corresponding path program 1 times [2021-12-28 02:14:24,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:24,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333348220] [2021-12-28 02:14:24,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:24,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:24,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:24,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:24,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333348220] [2021-12-28 02:14:24,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333348220] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:14:24,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:14:24,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:14:24,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97585809] [2021-12-28 02:14:24,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:14:24,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:14:24,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:24,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:14:24,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:14:24,748 INFO L87 Difference]: Start difference. First operand 1712 states and 3116 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-12-28 02:14:24,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:14:24,781 INFO L93 Difference]: Finished difference Result 2042 states and 3612 transitions. [2021-12-28 02:14:24,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:14:24,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2021-12-28 02:14:24,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:14:24,787 INFO L225 Difference]: With dead ends: 2042 [2021-12-28 02:14:24,787 INFO L226 Difference]: Without dead ends: 1859 [2021-12-28 02:14:24,788 INFO L932 BasicCegarLoop]: 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 [2021-12-28 02:14:24,789 INFO L933 BasicCegarLoop]: 1541 mSDtfsCounter, 1477 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:14:24,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1477 Valid, 1603 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:14:24,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1859 states. [2021-12-28 02:14:24,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1859 to 1857. [2021-12-28 02:14:24,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1855 states have (on average 1.7935309973045823) internal successors, (3327), 1856 states have internal predecessors, (3327), 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) [2021-12-28 02:14:24,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 3327 transitions. [2021-12-28 02:14:24,830 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 3327 transitions. Word has length 43 [2021-12-28 02:14:24,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:14:24,831 INFO L470 AbstractCegarLoop]: Abstraction has 1857 states and 3327 transitions. [2021-12-28 02:14:24,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-12-28 02:14:24,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 3327 transitions. [2021-12-28 02:14:24,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-28 02:14:24,832 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:24,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:14:24,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 02:14:24,833 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:24,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:24,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1199933027, now seen corresponding path program 1 times [2021-12-28 02:14:24,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:24,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870819126] [2021-12-28 02:14:24,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:24,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:24,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:24,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:24,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870819126] [2021-12-28 02:14:24,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870819126] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:14:24,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:14:24,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:14:24,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393445927] [2021-12-28 02:14:24,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:14:24,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:14:24,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:24,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:14:24,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:14:24,883 INFO L87 Difference]: Start difference. First operand 1857 states and 3327 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-12-28 02:14:24,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:14:24,924 INFO L93 Difference]: Finished difference Result 2441 states and 4185 transitions. [2021-12-28 02:14:24,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:14:24,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2021-12-28 02:14:24,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:14:24,930 INFO L225 Difference]: With dead ends: 2441 [2021-12-28 02:14:24,931 INFO L226 Difference]: Without dead ends: 2113 [2021-12-28 02:14:24,931 INFO L932 BasicCegarLoop]: 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 [2021-12-28 02:14:24,933 INFO L933 BasicCegarLoop]: 1554 mSDtfsCounter, 1481 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:14:24,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1481 Valid, 1612 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:14:24,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2021-12-28 02:14:24,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 2111. [2021-12-28 02:14:24,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2111 states, 2109 states have (on average 1.746325272641062) internal successors, (3683), 2110 states have internal predecessors, (3683), 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) [2021-12-28 02:14:24,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 3683 transitions. [2021-12-28 02:14:24,980 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 3683 transitions. Word has length 43 [2021-12-28 02:14:24,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:14:24,980 INFO L470 AbstractCegarLoop]: Abstraction has 2111 states and 3683 transitions. [2021-12-28 02:14:24,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-12-28 02:14:24,980 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 3683 transitions. [2021-12-28 02:14:24,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-28 02:14:24,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:24,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:14:24,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 02:14:24,981 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:24,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:24,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1511296967, now seen corresponding path program 1 times [2021-12-28 02:14:24,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:24,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73919241] [2021-12-28 02:14:24,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:24,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:25,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:25,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73919241] [2021-12-28 02:14:25,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73919241] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:14:25,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:14:25,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 02:14:25,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833905345] [2021-12-28 02:14:25,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:14:25,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 02:14:25,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:25,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 02:14:25,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:14:25,046 INFO L87 Difference]: Start difference. First operand 2111 states and 3683 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 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) [2021-12-28 02:14:25,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:14:25,198 INFO L93 Difference]: Finished difference Result 2634 states and 4411 transitions. [2021-12-28 02:14:25,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 02:14:25,199 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 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 44 [2021-12-28 02:14:25,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:14:25,206 INFO L225 Difference]: With dead ends: 2634 [2021-12-28 02:14:25,206 INFO L226 Difference]: Without dead ends: 2632 [2021-12-28 02:14:25,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-12-28 02:14:25,207 INFO L933 BasicCegarLoop]: 1531 mSDtfsCounter, 331 mSDsluCounter, 8972 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 10503 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:14:25,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 10503 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:14:25,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2021-12-28 02:14:25,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 2159. [2021-12-28 02:14:25,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2159 states, 2157 states have (on average 1.727862772369031) internal successors, (3727), 2158 states have internal predecessors, (3727), 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) [2021-12-28 02:14:25,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2159 states to 2159 states and 3727 transitions. [2021-12-28 02:14:25,261 INFO L78 Accepts]: Start accepts. Automaton has 2159 states and 3727 transitions. Word has length 44 [2021-12-28 02:14:25,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:14:25,262 INFO L470 AbstractCegarLoop]: Abstraction has 2159 states and 3727 transitions. [2021-12-28 02:14:25,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 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) [2021-12-28 02:14:25,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2159 states and 3727 transitions. [2021-12-28 02:14:25,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-28 02:14:25,263 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:25,263 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:14:25,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 02:14:25,263 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:25,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:25,264 INFO L85 PathProgramCache]: Analyzing trace with hash -213997176, now seen corresponding path program 1 times [2021-12-28 02:14:25,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:25,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184554212] [2021-12-28 02:14:25,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:25,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:25,300 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-28 02:14:25,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:25,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184554212] [2021-12-28 02:14:25,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184554212] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:14:25,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:14:25,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 02:14:25,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183757036] [2021-12-28 02:14:25,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:14:25,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 02:14:25,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:25,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 02:14:25,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:14:25,302 INFO L87 Difference]: Start difference. First operand 2159 states and 3727 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2021-12-28 02:14:25,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:14:25,454 INFO L93 Difference]: Finished difference Result 4187 states and 6575 transitions. [2021-12-28 02:14:25,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 02:14:25,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 64 [2021-12-28 02:14:25,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:14:25,464 INFO L225 Difference]: With dead ends: 4187 [2021-12-28 02:14:25,464 INFO L226 Difference]: Without dead ends: 3557 [2021-12-28 02:14:25,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:14:25,467 INFO L933 BasicCegarLoop]: 1563 mSDtfsCounter, 3075 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3075 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:14:25,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3075 Valid, 3177 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:14:25,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2021-12-28 02:14:25,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 2787. [2021-12-28 02:14:25,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2785 states have (on average 1.6527827648114901) internal successors, (4603), 2786 states have internal predecessors, (4603), 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) [2021-12-28 02:14:25,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 4603 transitions. [2021-12-28 02:14:25,614 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 4603 transitions. Word has length 64 [2021-12-28 02:14:25,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:14:25,615 INFO L470 AbstractCegarLoop]: Abstraction has 2787 states and 4603 transitions. [2021-12-28 02:14:25,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2021-12-28 02:14:25,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 4603 transitions. [2021-12-28 02:14:25,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-28 02:14:25,616 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:25,616 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:14:25,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 02:14:25,617 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:25,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:25,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1033510440, now seen corresponding path program 1 times [2021-12-28 02:14:25,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:25,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805978031] [2021-12-28 02:14:25,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:25,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:25,653 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 02:14:25,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:25,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805978031] [2021-12-28 02:14:25,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805978031] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:14:25,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:14:25,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 02:14:25,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489207523] [2021-12-28 02:14:25,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:14:25,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 02:14:25,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:25,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 02:14:25,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:14:25,656 INFO L87 Difference]: Start difference. First operand 2787 states and 4603 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2021-12-28 02:14:25,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:14:25,875 INFO L93 Difference]: Finished difference Result 4815 states and 7451 transitions. [2021-12-28 02:14:25,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 02:14:25,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 64 [2021-12-28 02:14:25,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:14:25,887 INFO L225 Difference]: With dead ends: 4815 [2021-12-28 02:14:25,887 INFO L226 Difference]: Without dead ends: 4185 [2021-12-28 02:14:25,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:14:25,890 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 3065 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3065 SdHoareTripleChecker+Valid, 3213 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:14:25,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3065 Valid, 3213 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:14:25,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4185 states. [2021-12-28 02:14:26,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4185 to 3731. [2021-12-28 02:14:26,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3731 states, 3729 states have (on average 1.584070796460177) internal successors, (5907), 3730 states have internal predecessors, (5907), 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) [2021-12-28 02:14:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3731 states to 3731 states and 5907 transitions. [2021-12-28 02:14:26,071 INFO L78 Accepts]: Start accepts. Automaton has 3731 states and 5907 transitions. Word has length 64 [2021-12-28 02:14:26,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:14:26,071 INFO L470 AbstractCegarLoop]: Abstraction has 3731 states and 5907 transitions. [2021-12-28 02:14:26,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2021-12-28 02:14:26,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3731 states and 5907 transitions. [2021-12-28 02:14:26,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-28 02:14:26,073 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:26,073 INFO L514 BasicCegarLoop]: 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] [2021-12-28 02:14:26,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 02:14:26,074 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:26,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:26,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1792023874, now seen corresponding path program 1 times [2021-12-28 02:14:26,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:26,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803210889] [2021-12-28 02:14:26,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:26,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:26,111 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 02:14:26,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:26,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803210889] [2021-12-28 02:14:26,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803210889] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:14:26,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:14:26,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 02:14:26,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098581952] [2021-12-28 02:14:26,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:14:26,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 02:14:26,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:26,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 02:14:26,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:14:26,114 INFO L87 Difference]: Start difference. First operand 3731 states and 5907 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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) [2021-12-28 02:14:26,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:14:26,329 INFO L93 Difference]: Finished difference Result 5083 states and 7831 transitions. [2021-12-28 02:14:26,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 02:14:26,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 64 [2021-12-28 02:14:26,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:14:26,336 INFO L225 Difference]: With dead ends: 5083 [2021-12-28 02:14:26,336 INFO L226 Difference]: Without dead ends: 4633 [2021-12-28 02:14:26,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:14:26,338 INFO L933 BasicCegarLoop]: 1562 mSDtfsCounter, 3066 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3066 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:14:26,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3066 Valid, 3181 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:14:26,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4633 states. [2021-12-28 02:14:26,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4633 to 4179. [2021-12-28 02:14:26,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4179 states, 4177 states have (on average 1.5654776155135264) internal successors, (6539), 4178 states have internal predecessors, (6539), 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) [2021-12-28 02:14:26,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4179 states to 4179 states and 6539 transitions. [2021-12-28 02:14:26,541 INFO L78 Accepts]: Start accepts. Automaton has 4179 states and 6539 transitions. Word has length 64 [2021-12-28 02:14:26,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:14:26,541 INFO L470 AbstractCegarLoop]: Abstraction has 4179 states and 6539 transitions. [2021-12-28 02:14:26,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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) [2021-12-28 02:14:26,542 INFO L276 IsEmpty]: Start isEmpty. Operand 4179 states and 6539 transitions. [2021-12-28 02:14:26,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-28 02:14:26,543 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:26,543 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:14:26,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 02:14:26,543 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:26,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:26,544 INFO L85 PathProgramCache]: Analyzing trace with hash 322769619, now seen corresponding path program 1 times [2021-12-28 02:14:26,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:26,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679432411] [2021-12-28 02:14:26,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:26,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:26,568 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:26,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:26,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679432411] [2021-12-28 02:14:26,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679432411] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:14:26,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:14:26,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:14:26,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290747261] [2021-12-28 02:14:26,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:14:26,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:14:26,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:26,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:14:26,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:14:26,570 INFO L87 Difference]: Start difference. First operand 4179 states and 6539 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2021-12-28 02:14:26,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:14:26,717 INFO L93 Difference]: Finished difference Result 6831 states and 10241 transitions. [2021-12-28 02:14:26,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:14:26,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2021-12-28 02:14:26,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:14:26,723 INFO L225 Difference]: With dead ends: 6831 [2021-12-28 02:14:26,723 INFO L226 Difference]: Without dead ends: 4181 [2021-12-28 02:14:26,726 INFO L932 BasicCegarLoop]: 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 [2021-12-28 02:14:26,727 INFO L933 BasicCegarLoop]: 1538 mSDtfsCounter, 33 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:14:26,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 3042 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:14:26,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4181 states. [2021-12-28 02:14:26,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4181 to 4179. [2021-12-28 02:14:26,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4179 states, 4177 states have (on average 1.5535073018913095) internal successors, (6489), 4178 states have internal predecessors, (6489), 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) [2021-12-28 02:14:26,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4179 states to 4179 states and 6489 transitions. [2021-12-28 02:14:26,885 INFO L78 Accepts]: Start accepts. Automaton has 4179 states and 6489 transitions. Word has length 65 [2021-12-28 02:14:26,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:14:26,886 INFO L470 AbstractCegarLoop]: Abstraction has 4179 states and 6489 transitions. [2021-12-28 02:14:26,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2021-12-28 02:14:26,886 INFO L276 IsEmpty]: Start isEmpty. Operand 4179 states and 6489 transitions. [2021-12-28 02:14:26,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-28 02:14:26,887 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:26,887 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:14:26,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 02:14:26,887 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:26,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:26,888 INFO L85 PathProgramCache]: Analyzing trace with hash 235650825, now seen corresponding path program 1 times [2021-12-28 02:14:26,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:26,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071885394] [2021-12-28 02:14:26,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:26,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:26,913 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:26,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:26,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071885394] [2021-12-28 02:14:26,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071885394] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:14:26,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:14:26,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:14:26,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129952443] [2021-12-28 02:14:26,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:14:26,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:14:26,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:26,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:14:26,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:14:26,915 INFO L87 Difference]: Start difference. First operand 4179 states and 6489 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2021-12-28 02:14:26,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:14:26,996 INFO L93 Difference]: Finished difference Result 5507 states and 8316 transitions. [2021-12-28 02:14:26,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:14:26,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2021-12-28 02:14:26,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:14:27,001 INFO L225 Difference]: With dead ends: 5507 [2021-12-28 02:14:27,001 INFO L226 Difference]: Without dead ends: 2857 [2021-12-28 02:14:27,003 INFO L932 BasicCegarLoop]: 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 [2021-12-28 02:14:27,004 INFO L933 BasicCegarLoop]: 1531 mSDtfsCounter, 29 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3027 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:14:27,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 3027 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:14:27,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2021-12-28 02:14:27,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2855. [2021-12-28 02:14:27,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2855 states, 2853 states have (on average 1.6260077111812128) internal successors, (4639), 2854 states have internal predecessors, (4639), 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) [2021-12-28 02:14:27,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2855 states to 2855 states and 4639 transitions. [2021-12-28 02:14:27,087 INFO L78 Accepts]: Start accepts. Automaton has 2855 states and 4639 transitions. Word has length 65 [2021-12-28 02:14:27,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:14:27,087 INFO L470 AbstractCegarLoop]: Abstraction has 2855 states and 4639 transitions. [2021-12-28 02:14:27,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2021-12-28 02:14:27,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2855 states and 4639 transitions. [2021-12-28 02:14:27,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-28 02:14:27,088 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:27,088 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:14:27,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 02:14:27,088 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:27,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:27,089 INFO L85 PathProgramCache]: Analyzing trace with hash -883624385, now seen corresponding path program 1 times [2021-12-28 02:14:27,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:27,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586211961] [2021-12-28 02:14:27,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:27,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:27,289 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:27,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:27,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586211961] [2021-12-28 02:14:27,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586211961] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 02:14:27,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479416876] [2021-12-28 02:14:27,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:27,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 02:14:27,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:14:27,307 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) [2021-12-28 02:14:27,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 02:14:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:27,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-28 02:14:27,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 02:14:27,626 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 02:14:27,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 02:14:28,006 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 02:14:28,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479416876] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 02:14:28,007 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 02:14:28,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 4] total 20 [2021-12-28 02:14:28,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010591592] [2021-12-28 02:14:28,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 02:14:28,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-28 02:14:28,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:28,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-28 02:14:28,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-12-28 02:14:28,009 INFO L87 Difference]: Start difference. First operand 2855 states and 4639 transitions. Second operand has 20 states, 20 states have (on average 8.9) internal successors, (178), 20 states have internal predecessors, (178), 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) [2021-12-28 02:14:32,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:14:32,200 INFO L93 Difference]: Finished difference Result 15821 states and 21954 transitions. [2021-12-28 02:14:32,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-12-28 02:14:32,200 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.9) internal successors, (178), 20 states have internal predecessors, (178), 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 65 [2021-12-28 02:14:32,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:14:32,224 INFO L225 Difference]: With dead ends: 15821 [2021-12-28 02:14:32,224 INFO L226 Difference]: Without dead ends: 14495 [2021-12-28 02:14:32,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 119 SyntacticMatches, 5 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6702 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2917, Invalid=13853, Unknown=0, NotChecked=0, Total=16770 [2021-12-28 02:14:32,234 INFO L933 BasicCegarLoop]: 1592 mSDtfsCounter, 15820 mSDsluCounter, 8600 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15820 SdHoareTripleChecker+Valid, 10192 SdHoareTripleChecker+Invalid, 2011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 02:14:32,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15820 Valid, 10192 Invalid, 2011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 1776 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 02:14:32,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14495 states. [2021-12-28 02:14:32,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14495 to 8017. [2021-12-28 02:14:32,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8017 states, 8015 states have (on average 1.417467248908297) internal successors, (11361), 8016 states have internal predecessors, (11361), 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) [2021-12-28 02:14:32,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8017 states to 8017 states and 11361 transitions. [2021-12-28 02:14:32,876 INFO L78 Accepts]: Start accepts. Automaton has 8017 states and 11361 transitions. Word has length 65 [2021-12-28 02:14:32,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:14:32,876 INFO L470 AbstractCegarLoop]: Abstraction has 8017 states and 11361 transitions. [2021-12-28 02:14:32,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.9) internal successors, (178), 20 states have internal predecessors, (178), 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) [2021-12-28 02:14:32,876 INFO L276 IsEmpty]: Start isEmpty. Operand 8017 states and 11361 transitions. [2021-12-28 02:14:32,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-28 02:14:32,877 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:32,877 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:14:32,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 02:14:33,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-28 02:14:33,096 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:33,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:33,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1505794396, now seen corresponding path program 1 times [2021-12-28 02:14:33,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:33,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990985322] [2021-12-28 02:14:33,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:33,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:33,253 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:33,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:33,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990985322] [2021-12-28 02:14:33,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990985322] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 02:14:33,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340695128] [2021-12-28 02:14:33,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:33,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 02:14:33,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:14:33,257 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) [2021-12-28 02:14:33,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 02:14:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:33,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-28 02:14:33,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 02:14:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:33,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 02:14:34,395 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:34,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340695128] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 02:14:34,396 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 02:14:34,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2021-12-28 02:14:34,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529968407] [2021-12-28 02:14:34,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 02:14:34,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-28 02:14:34,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:34,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-28 02:14:34,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2021-12-28 02:14:34,398 INFO L87 Difference]: Start difference. First operand 8017 states and 11361 transitions. Second operand has 21 states, 21 states have (on average 6.904761904761905) internal successors, (145), 20 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) [2021-12-28 02:14:36,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:14:36,333 INFO L93 Difference]: Finished difference Result 28884 states and 38380 transitions. [2021-12-28 02:14:36,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-28 02:14:36,334 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.904761904761905) internal successors, (145), 20 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 66 [2021-12-28 02:14:36,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:14:36,365 INFO L225 Difference]: With dead ends: 28884 [2021-12-28 02:14:36,365 INFO L226 Difference]: Without dead ends: 24065 [2021-12-28 02:14:36,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=355, Invalid=1051, Unknown=0, NotChecked=0, Total=1406 [2021-12-28 02:14:36,375 INFO L933 BasicCegarLoop]: 1535 mSDtfsCounter, 9454 mSDsluCounter, 5080 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9454 SdHoareTripleChecker+Valid, 6615 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 02:14:36,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9454 Valid, 6615 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 02:14:36,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24065 states. [2021-12-28 02:14:37,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24065 to 15728. [2021-12-28 02:14:37,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15728 states, 15726 states have (on average 1.3584509729111027) internal successors, (21363), 15727 states have internal predecessors, (21363), 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) [2021-12-28 02:14:37,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15728 states to 15728 states and 21363 transitions. [2021-12-28 02:14:37,524 INFO L78 Accepts]: Start accepts. Automaton has 15728 states and 21363 transitions. Word has length 66 [2021-12-28 02:14:37,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:14:37,524 INFO L470 AbstractCegarLoop]: Abstraction has 15728 states and 21363 transitions. [2021-12-28 02:14:37,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.904761904761905) internal successors, (145), 20 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) [2021-12-28 02:14:37,525 INFO L276 IsEmpty]: Start isEmpty. Operand 15728 states and 21363 transitions. [2021-12-28 02:14:37,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-28 02:14:37,526 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:37,526 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:14:37,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-28 02:14:37,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-28 02:14:37,743 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:37,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:37,743 INFO L85 PathProgramCache]: Analyzing trace with hash 616171932, now seen corresponding path program 1 times [2021-12-28 02:14:37,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:37,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844250722] [2021-12-28 02:14:37,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:37,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:37,868 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:37,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:37,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844250722] [2021-12-28 02:14:37,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844250722] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 02:14:37,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756377711] [2021-12-28 02:14:37,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:37,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 02:14:37,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:14:37,870 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) [2021-12-28 02:14:37,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 02:14:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:37,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-28 02:14:37,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 02:14:38,858 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:38,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 02:14:39,703 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:39,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756377711] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 02:14:39,704 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 02:14:39,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2021-12-28 02:14:39,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508648572] [2021-12-28 02:14:39,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 02:14:39,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-28 02:14:39,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:39,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-28 02:14:39,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=888, Unknown=0, NotChecked=0, Total=992 [2021-12-28 02:14:39,706 INFO L87 Difference]: Start difference. First operand 15728 states and 21363 transitions. Second operand has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 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)