./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.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 db03244f437c604118fe4e6b7fad5fed51908f88ca97b14f50d7801b4370610e --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:43:59,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:43:59,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:43:59,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:43:59,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:43:59,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:43:59,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:43:59,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:43:59,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:43:59,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:43:59,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:43:59,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:43:59,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:43:59,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:43:59,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:43:59,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:43:59,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:43:59,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:43:59,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:43:59,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:43:59,937 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:43:59,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:43:59,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:43:59,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:43:59,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:43:59,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:43:59,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:43:59,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:43:59,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:43:59,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:43:59,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:43:59,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:43:59,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:43:59,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:43:59,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:43:59,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:43:59,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:43:59,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:43:59,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:43:59,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:43:59,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:43:59,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:43:59,960 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:43:59,982 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:43:59,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:43:59,982 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:43:59,982 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:43:59,983 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:43:59,983 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:43:59,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:43:59,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:43:59,984 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:43:59,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:43:59,984 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:43:59,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:43:59,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:43:59,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:43:59,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:43:59,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:43:59,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:43:59,985 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:43:59,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:43:59,985 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:43:59,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:43:59,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:43:59,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:43:59,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:43:59,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:43:59,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:43:59,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:43:59,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:43:59,987 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:43:59,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:43:59,987 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:43:59,987 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:43:59,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:43:59,987 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db03244f437c604118fe4e6b7fad5fed51908f88ca97b14f50d7801b4370610e [2022-07-22 18:44:00,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:44:00,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:44:00,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:44:00,176 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:44:00,176 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:44:00,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2022-07-22 18:44:00,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09fde465e/36b4312e42fc402c8a85c044765340f5/FLAG5495906a6 [2022-07-22 18:44:00,611 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:44:00,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2022-07-22 18:44:00,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09fde465e/36b4312e42fc402c8a85c044765340f5/FLAG5495906a6 [2022-07-22 18:44:00,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09fde465e/36b4312e42fc402c8a85c044765340f5 [2022-07-22 18:44:00,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:44:00,638 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:44:00,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:44:00,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:44:00,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:44:00,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:44:00" (1/1) ... [2022-07-22 18:44:00,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e67c5b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:44:00, skipping insertion in model container [2022-07-22 18:44:00,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:44:00" (1/1) ... [2022-07-22 18:44:00,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:44:00,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:44:00,911 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[9243,9256] [2022-07-22 18:44:00,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:44:00,972 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:44:01,029 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[9243,9256] [2022-07-22 18:44:01,055 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:44:01,068 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:44:01,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:44:01 WrapperNode [2022-07-22 18:44:01,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:44:01,069 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:44:01,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:44:01,069 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:44:01,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:44:01" (1/1) ... [2022-07-22 18:44:01,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:44:01" (1/1) ... [2022-07-22 18:44:01,142 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 744 [2022-07-22 18:44:01,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:44:01,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:44:01,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:44:01,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:44:01,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:44:01" (1/1) ... [2022-07-22 18:44:01,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:44:01" (1/1) ... [2022-07-22 18:44:01,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:44:01" (1/1) ... [2022-07-22 18:44:01,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:44:01" (1/1) ... [2022-07-22 18:44:01,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:44:01" (1/1) ... [2022-07-22 18:44:01,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:44:01" (1/1) ... [2022-07-22 18:44:01,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:44:01" (1/1) ... [2022-07-22 18:44:01,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:44:01,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:44:01,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:44:01,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:44:01,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:44:01" (1/1) ... [2022-07-22 18:44:01,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:44:01,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:44:01,259 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 18:44:01,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 18:44:01,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:44:01,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:44:01,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:44:01,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:44:01,404 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:44:01,406 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:44:01,928 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:44:01,953 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:44:01,953 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 18:44:01,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:44:01 BoogieIcfgContainer [2022-07-22 18:44:01,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:44:01,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:44:01,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:44:01,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:44:01,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:44:00" (1/3) ... [2022-07-22 18:44:01,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6074284a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:44:01, skipping insertion in model container [2022-07-22 18:44:01,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:44:01" (2/3) ... [2022-07-22 18:44:01,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6074284a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:44:01, skipping insertion in model container [2022-07-22 18:44:01,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:44:01" (3/3) ... [2022-07-22 18:44:01,963 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2022-07-22 18:44:01,976 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:44:01,976 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 18:44:02,016 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:44:02,022 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@68203028, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4d2dcd40 [2022-07-22 18:44:02,023 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 18:44:02,026 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 176 states have (on average 1.7613636363636365) internal successors, (310), 177 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:02,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 18:44:02,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:44:02,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:44:02,034 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:44:02,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:44:02,037 INFO L85 PathProgramCache]: Analyzing trace with hash 2136906399, now seen corresponding path program 1 times [2022-07-22 18:44:02,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:44:02,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601247746] [2022-07-22 18:44:02,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:44:02,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:44:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:44:02,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:44:02,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:44:02,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601247746] [2022-07-22 18:44:02,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601247746] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:44:02,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:44:02,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:44:02,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049517532] [2022-07-22 18:44:02,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:44:02,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:44:02,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:44:02,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:44:02,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:44:02,545 INFO L87 Difference]: Start difference. First operand has 178 states, 176 states have (on average 1.7613636363636365) internal successors, (310), 177 states have internal predecessors, (310), 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 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:02,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:44:02,959 INFO L93 Difference]: Finished difference Result 1147 states and 1843 transitions. [2022-07-22 18:44:02,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 18:44:02,962 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 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 91 [2022-07-22 18:44:02,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:44:02,981 INFO L225 Difference]: With dead ends: 1147 [2022-07-22 18:44:02,982 INFO L226 Difference]: Without dead ends: 1037 [2022-07-22 18:44:02,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-07-22 18:44:02,987 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 2029 mSDsluCounter, 3070 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2029 SdHoareTripleChecker+Valid, 3789 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:44:02,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2029 Valid, 3789 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:44:03,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2022-07-22 18:44:03,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 270. [2022-07-22 18:44:03,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 1.449814126394052) internal successors, (390), 269 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:03,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 390 transitions. [2022-07-22 18:44:03,046 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 390 transitions. Word has length 91 [2022-07-22 18:44:03,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:44:03,047 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 390 transitions. [2022-07-22 18:44:03,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:03,047 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 390 transitions. [2022-07-22 18:44:03,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 18:44:03,049 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:44:03,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:44:03,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:44:03,050 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:44:03,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:44:03,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1446649810, now seen corresponding path program 1 times [2022-07-22 18:44:03,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:44:03,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027858411] [2022-07-22 18:44:03,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:44:03,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:44:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:44:03,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:44:03,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:44:03,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027858411] [2022-07-22 18:44:03,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027858411] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:44:03,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:44:03,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:44:03,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457521418] [2022-07-22 18:44:03,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:44:03,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:44:03,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:44:03,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:44:03,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:44:03,264 INFO L87 Difference]: Start difference. First operand 270 states and 390 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:03,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:44:03,548 INFO L93 Difference]: Finished difference Result 1236 states and 1911 transitions. [2022-07-22 18:44:03,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:44:03,549 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 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 93 [2022-07-22 18:44:03,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:44:03,554 INFO L225 Difference]: With dead ends: 1236 [2022-07-22 18:44:03,554 INFO L226 Difference]: Without dead ends: 1096 [2022-07-22 18:44:03,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:44:03,560 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 1352 mSDsluCounter, 1719 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:44:03,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1352 Valid, 2393 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:44:03,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2022-07-22 18:44:03,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 429. [2022-07-22 18:44:03,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.5) internal successors, (642), 428 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:03,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 642 transitions. [2022-07-22 18:44:03,614 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 642 transitions. Word has length 93 [2022-07-22 18:44:03,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:44:03,616 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 642 transitions. [2022-07-22 18:44:03,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:03,616 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 642 transitions. [2022-07-22 18:44:03,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 18:44:03,621 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:44:03,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:44:03,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:44:03,624 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:44:03,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:44:03,625 INFO L85 PathProgramCache]: Analyzing trace with hash 529896762, now seen corresponding path program 1 times [2022-07-22 18:44:03,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:44:03,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289095669] [2022-07-22 18:44:03,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:44:03,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:44:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:44:03,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:44:03,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:44:03,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289095669] [2022-07-22 18:44:03,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289095669] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:44:03,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:44:03,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:44:03,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44363536] [2022-07-22 18:44:03,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:44:03,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:44:03,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:44:03,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:44:03,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:44:03,735 INFO L87 Difference]: Start difference. First operand 429 states and 642 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:03,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:44:03,968 INFO L93 Difference]: Finished difference Result 1390 states and 2155 transitions. [2022-07-22 18:44:03,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:44:03,968 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 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 93 [2022-07-22 18:44:03,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:44:03,974 INFO L225 Difference]: With dead ends: 1390 [2022-07-22 18:44:03,974 INFO L226 Difference]: Without dead ends: 1250 [2022-07-22 18:44:03,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:44:03,981 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 1558 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 1993 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:44:03,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 1993 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:44:03,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2022-07-22 18:44:04,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 652. [2022-07-22 18:44:04,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 651 states have (on average 1.5284178187403994) internal successors, (995), 651 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:04,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 995 transitions. [2022-07-22 18:44:04,036 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 995 transitions. Word has length 93 [2022-07-22 18:44:04,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:44:04,037 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 995 transitions. [2022-07-22 18:44:04,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:04,038 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 995 transitions. [2022-07-22 18:44:04,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 18:44:04,041 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:44:04,041 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:44:04,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:44:04,041 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:44:04,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:44:04,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1234930226, now seen corresponding path program 1 times [2022-07-22 18:44:04,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:44:04,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974610083] [2022-07-22 18:44:04,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:44:04,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:44:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:44:04,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:44:04,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:44:04,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974610083] [2022-07-22 18:44:04,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974610083] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:44:04,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:44:04,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:44:04,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077039660] [2022-07-22 18:44:04,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:44:04,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:44:04,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:44:04,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:44:04,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:44:04,141 INFO L87 Difference]: Start difference. First operand 652 states and 995 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:04,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:44:04,377 INFO L93 Difference]: Finished difference Result 1539 states and 2391 transitions. [2022-07-22 18:44:04,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:44:04,378 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 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 93 [2022-07-22 18:44:04,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:44:04,382 INFO L225 Difference]: With dead ends: 1539 [2022-07-22 18:44:04,382 INFO L226 Difference]: Without dead ends: 1399 [2022-07-22 18:44:04,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:44:04,383 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 1760 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:44:04,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1760 Valid, 1822 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:44:04,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2022-07-22 18:44:04,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 796. [2022-07-22 18:44:04,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 795 states have (on average 1.538364779874214) internal successors, (1223), 795 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:04,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1223 transitions. [2022-07-22 18:44:04,449 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1223 transitions. Word has length 93 [2022-07-22 18:44:04,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:44:04,449 INFO L495 AbstractCegarLoop]: Abstraction has 796 states and 1223 transitions. [2022-07-22 18:44:04,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:04,449 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1223 transitions. [2022-07-22 18:44:04,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 18:44:04,450 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:44:04,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:44:04,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:44:04,451 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:44:04,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:44:04,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1576423674, now seen corresponding path program 1 times [2022-07-22 18:44:04,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:44:04,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454071712] [2022-07-22 18:44:04,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:44:04,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:44:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:44:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:44:04,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:44:04,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454071712] [2022-07-22 18:44:04,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454071712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:44:04,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:44:04,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:44:04,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868510172] [2022-07-22 18:44:04,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:44:04,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:44:04,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:44:04,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:44:04,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:44:04,524 INFO L87 Difference]: Start difference. First operand 796 states and 1223 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:04,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:44:04,763 INFO L93 Difference]: Finished difference Result 1678 states and 2611 transitions. [2022-07-22 18:44:04,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:44:04,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 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 93 [2022-07-22 18:44:04,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:44:04,768 INFO L225 Difference]: With dead ends: 1678 [2022-07-22 18:44:04,768 INFO L226 Difference]: Without dead ends: 1538 [2022-07-22 18:44:04,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:44:04,769 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 1863 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1863 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:44:04,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1863 Valid, 1822 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:44:04,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2022-07-22 18:44:04,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 935. [2022-07-22 18:44:04,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 934 states have (on average 1.544967880085653) internal successors, (1443), 934 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:04,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1443 transitions. [2022-07-22 18:44:04,841 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1443 transitions. Word has length 93 [2022-07-22 18:44:04,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:44:04,841 INFO L495 AbstractCegarLoop]: Abstraction has 935 states and 1443 transitions. [2022-07-22 18:44:04,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:04,842 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1443 transitions. [2022-07-22 18:44:04,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 18:44:04,842 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:44:04,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:44:04,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 18:44:04,843 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:44:04,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:44:04,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1813331907, now seen corresponding path program 1 times [2022-07-22 18:44:04,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:44:04,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83699641] [2022-07-22 18:44:04,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:44:04,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:44:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:44:04,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:44:04,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:44:04,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83699641] [2022-07-22 18:44:04,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83699641] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:44:04,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:44:04,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:44:04,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942132274] [2022-07-22 18:44:04,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:44:04,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:44:04,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:44:04,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:44:04,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:44:04,989 INFO L87 Difference]: Start difference. First operand 935 states and 1443 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:05,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:44:05,229 INFO L93 Difference]: Finished difference Result 1698 states and 2650 transitions. [2022-07-22 18:44:05,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:44:05,229 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 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 93 [2022-07-22 18:44:05,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:44:05,232 INFO L225 Difference]: With dead ends: 1698 [2022-07-22 18:44:05,232 INFO L226 Difference]: Without dead ends: 937 [2022-07-22 18:44:05,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-07-22 18:44:05,234 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 773 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:44:05,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 953 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:44:05,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-07-22 18:44:05,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 935. [2022-07-22 18:44:05,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 934 states have (on average 1.5385438972162742) internal successors, (1437), 934 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:05,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1437 transitions. [2022-07-22 18:44:05,316 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1437 transitions. Word has length 93 [2022-07-22 18:44:05,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:44:05,317 INFO L495 AbstractCegarLoop]: Abstraction has 935 states and 1437 transitions. [2022-07-22 18:44:05,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:05,317 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1437 transitions. [2022-07-22 18:44:05,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 18:44:05,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:44:05,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:44:05,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 18:44:05,318 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:44:05,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:44:05,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1570207556, now seen corresponding path program 1 times [2022-07-22 18:44:05,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:44:05,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323413378] [2022-07-22 18:44:05,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:44:05,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:44:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:44:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:44:05,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:44:05,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323413378] [2022-07-22 18:44:05,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323413378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:44:05,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:44:05,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:44:05,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390888654] [2022-07-22 18:44:05,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:44:05,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:44:05,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:44:05,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:44:05,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:44:05,351 INFO L87 Difference]: Start difference. First operand 935 states and 1437 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:05,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:44:05,488 INFO L93 Difference]: Finished difference Result 2386 states and 3718 transitions. [2022-07-22 18:44:05,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:44:05,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2022-07-22 18:44:05,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:44:05,493 INFO L225 Difference]: With dead ends: 2386 [2022-07-22 18:44:05,494 INFO L226 Difference]: Without dead ends: 1625 [2022-07-22 18:44:05,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:44:05,495 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 99 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:44:05,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 562 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:44:05,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2022-07-22 18:44:05,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1623. [2022-07-22 18:44:05,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1622 states have (on average 1.5382244143033292) internal successors, (2495), 1622 states have internal predecessors, (2495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:05,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2495 transitions. [2022-07-22 18:44:05,626 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2495 transitions. Word has length 93 [2022-07-22 18:44:05,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:44:05,626 INFO L495 AbstractCegarLoop]: Abstraction has 1623 states and 2495 transitions. [2022-07-22 18:44:05,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:05,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2495 transitions. [2022-07-22 18:44:05,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 18:44:05,627 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:44:05,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:44:05,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 18:44:05,628 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:44:05,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:44:05,628 INFO L85 PathProgramCache]: Analyzing trace with hash -906608998, now seen corresponding path program 1 times [2022-07-22 18:44:05,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:44:05,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521523725] [2022-07-22 18:44:05,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:44:05,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:44:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:44:05,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:44:05,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:44:05,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521523725] [2022-07-22 18:44:05,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521523725] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:44:05,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:44:05,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:44:05,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393697070] [2022-07-22 18:44:05,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:44:05,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:44:05,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:44:05,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:44:05,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:44:05,700 INFO L87 Difference]: Start difference. First operand 1623 states and 2495 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:06,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:44:06,143 INFO L93 Difference]: Finished difference Result 3260 states and 5043 transitions. [2022-07-22 18:44:06,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:44:06,143 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 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 93 [2022-07-22 18:44:06,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:44:06,150 INFO L225 Difference]: With dead ends: 3260 [2022-07-22 18:44:06,150 INFO L226 Difference]: Without dead ends: 2995 [2022-07-22 18:44:06,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:44:06,152 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 1631 mSDsluCounter, 2043 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 2500 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:44:06,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1631 Valid, 2500 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:44:06,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2022-07-22 18:44:06,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1897. [2022-07-22 18:44:06,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1897 states, 1896 states have (on average 1.5411392405063291) internal successors, (2922), 1896 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:06,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1897 states to 1897 states and 2922 transitions. [2022-07-22 18:44:06,335 INFO L78 Accepts]: Start accepts. Automaton has 1897 states and 2922 transitions. Word has length 93 [2022-07-22 18:44:06,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:44:06,336 INFO L495 AbstractCegarLoop]: Abstraction has 1897 states and 2922 transitions. [2022-07-22 18:44:06,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:06,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1897 states and 2922 transitions. [2022-07-22 18:44:06,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 18:44:06,338 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:44:06,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:44:06,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 18:44:06,340 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:44:06,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:44:06,341 INFO L85 PathProgramCache]: Analyzing trace with hash 861848230, now seen corresponding path program 1 times [2022-07-22 18:44:06,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:44:06,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982659708] [2022-07-22 18:44:06,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:44:06,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:44:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:44:06,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:44:06,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:44:06,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982659708] [2022-07-22 18:44:06,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982659708] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:44:06,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:44:06,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:44:06,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951207065] [2022-07-22 18:44:06,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:44:06,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:44:06,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:44:06,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:44:06,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:44:06,430 INFO L87 Difference]: Start difference. First operand 1897 states and 2922 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:06,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:44:06,828 INFO L93 Difference]: Finished difference Result 3544 states and 5486 transitions. [2022-07-22 18:44:06,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:44:06,829 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 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 93 [2022-07-22 18:44:06,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:44:06,838 INFO L225 Difference]: With dead ends: 3544 [2022-07-22 18:44:06,838 INFO L226 Difference]: Without dead ends: 3279 [2022-07-22 18:44:06,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:44:06,841 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 1747 mSDsluCounter, 1885 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:44:06,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1747 Valid, 2267 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:44:06,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2022-07-22 18:44:07,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 2181. [2022-07-22 18:44:07,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 2180 states have (on average 1.5435779816513762) internal successors, (3365), 2180 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:07,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 3365 transitions. [2022-07-22 18:44:07,051 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 3365 transitions. Word has length 93 [2022-07-22 18:44:07,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:44:07,052 INFO L495 AbstractCegarLoop]: Abstraction has 2181 states and 3365 transitions. [2022-07-22 18:44:07,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:07,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 3365 transitions. [2022-07-22 18:44:07,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-22 18:44:07,063 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:44:07,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:44:07,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 18:44:07,064 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:44:07,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:44:07,064 INFO L85 PathProgramCache]: Analyzing trace with hash 376805043, now seen corresponding path program 1 times [2022-07-22 18:44:07,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:44:07,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771097855] [2022-07-22 18:44:07,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:44:07,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:44:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:44:07,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:44:07,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:44:07,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771097855] [2022-07-22 18:44:07,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771097855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:44:07,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:44:07,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:44:07,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35085140] [2022-07-22 18:44:07,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:44:07,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:44:07,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:44:07,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:44:07,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:44:07,119 INFO L87 Difference]: Start difference. First operand 2181 states and 3365 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:07,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:44:07,430 INFO L93 Difference]: Finished difference Result 4311 states and 6677 transitions. [2022-07-22 18:44:07,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:44:07,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 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 94 [2022-07-22 18:44:07,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:44:07,436 INFO L225 Difference]: With dead ends: 4311 [2022-07-22 18:44:07,436 INFO L226 Difference]: Without dead ends: 2181 [2022-07-22 18:44:07,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:44:07,439 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 644 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:44:07,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 139 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:44:07,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2022-07-22 18:44:07,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 2181. [2022-07-22 18:44:07,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 2180 states have (on average 1.5293577981651376) internal successors, (3334), 2180 states have internal predecessors, (3334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:07,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 3334 transitions. [2022-07-22 18:44:07,697 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 3334 transitions. Word has length 94 [2022-07-22 18:44:07,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:44:07,697 INFO L495 AbstractCegarLoop]: Abstraction has 2181 states and 3334 transitions. [2022-07-22 18:44:07,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:07,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 3334 transitions. [2022-07-22 18:44:07,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-22 18:44:07,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:44:07,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:44:07,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 18:44:07,699 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:44:07,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:44:07,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1521549230, now seen corresponding path program 1 times [2022-07-22 18:44:07,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:44:07,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382403338] [2022-07-22 18:44:07,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:44:07,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:44:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:44:07,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:44:07,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:44:07,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382403338] [2022-07-22 18:44:07,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382403338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:44:07,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:44:07,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:44:07,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685153970] [2022-07-22 18:44:07,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:44:07,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:44:07,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:44:07,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:44:07,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:44:07,743 INFO L87 Difference]: Start difference. First operand 2181 states and 3334 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:08,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:44:08,314 INFO L93 Difference]: Finished difference Result 6387 states and 9819 transitions. [2022-07-22 18:44:08,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:44:08,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 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 95 [2022-07-22 18:44:08,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:44:08,325 INFO L225 Difference]: With dead ends: 6387 [2022-07-22 18:44:08,325 INFO L226 Difference]: Without dead ends: 4253 [2022-07-22 18:44:08,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:44:08,329 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 947 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:44:08,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 211 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:44:08,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4253 states. [2022-07-22 18:44:08,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4253 to 4251. [2022-07-22 18:44:08,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4251 states, 4250 states have (on average 1.5296470588235294) internal successors, (6501), 4250 states have internal predecessors, (6501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:08,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4251 states to 4251 states and 6501 transitions. [2022-07-22 18:44:08,805 INFO L78 Accepts]: Start accepts. Automaton has 4251 states and 6501 transitions. Word has length 95 [2022-07-22 18:44:08,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:44:08,805 INFO L495 AbstractCegarLoop]: Abstraction has 4251 states and 6501 transitions. [2022-07-22 18:44:08,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:08,806 INFO L276 IsEmpty]: Start isEmpty. Operand 4251 states and 6501 transitions. [2022-07-22 18:44:08,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-22 18:44:08,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:44:08,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:44:08,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 18:44:08,810 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:44:08,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:44:08,811 INFO L85 PathProgramCache]: Analyzing trace with hash -824700769, now seen corresponding path program 1 times [2022-07-22 18:44:08,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:44:08,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858940694] [2022-07-22 18:44:08,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:44:08,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:44:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:44:08,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:44:08,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:44:08,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858940694] [2022-07-22 18:44:08,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858940694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:44:08,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:44:08,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:44:08,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419604522] [2022-07-22 18:44:08,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:44:08,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:44:08,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:44:08,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:44:08,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:44:08,872 INFO L87 Difference]: Start difference. First operand 4251 states and 6501 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:09,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:44:09,482 INFO L93 Difference]: Finished difference Result 8439 states and 12936 transitions. [2022-07-22 18:44:09,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:44:09,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 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 96 [2022-07-22 18:44:09,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:44:09,492 INFO L225 Difference]: With dead ends: 8439 [2022-07-22 18:44:09,492 INFO L226 Difference]: Without dead ends: 4251 [2022-07-22 18:44:09,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:44:09,496 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 600 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:44:09,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 163 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:44:09,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4251 states. [2022-07-22 18:44:09,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4251 to 4251. [2022-07-22 18:44:09,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4251 states, 4250 states have (on average 1.515294117647059) internal successors, (6440), 4250 states have internal predecessors, (6440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:09,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4251 states to 4251 states and 6440 transitions. [2022-07-22 18:44:09,991 INFO L78 Accepts]: Start accepts. Automaton has 4251 states and 6440 transitions. Word has length 96 [2022-07-22 18:44:09,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:44:09,991 INFO L495 AbstractCegarLoop]: Abstraction has 4251 states and 6440 transitions. [2022-07-22 18:44:09,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:09,992 INFO L276 IsEmpty]: Start isEmpty. Operand 4251 states and 6440 transitions. [2022-07-22 18:44:09,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-22 18:44:09,993 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:44:09,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:44:09,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 18:44:09,993 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:44:09,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:44:09,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1248287654, now seen corresponding path program 1 times [2022-07-22 18:44:09,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:44:09,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405332321] [2022-07-22 18:44:09,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:44:09,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:44:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:44:10,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:44:10,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:44:10,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405332321] [2022-07-22 18:44:10,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405332321] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:44:10,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:44:10,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:44:10,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72215907] [2022-07-22 18:44:10,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:44:10,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:44:10,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:44:10,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:44:10,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:44:10,039 INFO L87 Difference]: Start difference. First operand 4251 states and 6440 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:10,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:44:10,613 INFO L93 Difference]: Finished difference Result 8443 states and 12819 transitions. [2022-07-22 18:44:10,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:44:10,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 97 [2022-07-22 18:44:10,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:44:10,621 INFO L225 Difference]: With dead ends: 8443 [2022-07-22 18:44:10,621 INFO L226 Difference]: Without dead ends: 4251 [2022-07-22 18:44:10,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:44:10,626 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 605 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:44:10,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 155 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:44:10,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4251 states. [2022-07-22 18:44:11,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4251 to 4251. [2022-07-22 18:44:11,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4251 states, 4250 states have (on average 1.5009411764705882) internal successors, (6379), 4250 states have internal predecessors, (6379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:11,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4251 states to 4251 states and 6379 transitions. [2022-07-22 18:44:11,182 INFO L78 Accepts]: Start accepts. Automaton has 4251 states and 6379 transitions. Word has length 97 [2022-07-22 18:44:11,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:44:11,183 INFO L495 AbstractCegarLoop]: Abstraction has 4251 states and 6379 transitions. [2022-07-22 18:44:11,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:11,183 INFO L276 IsEmpty]: Start isEmpty. Operand 4251 states and 6379 transitions. [2022-07-22 18:44:11,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-22 18:44:11,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:44:11,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:44:11,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 18:44:11,185 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:44:11,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:44:11,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1071880717, now seen corresponding path program 1 times [2022-07-22 18:44:11,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:44:11,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462849983] [2022-07-22 18:44:11,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:44:11,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:44:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:44:11,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:44:11,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:44:11,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462849983] [2022-07-22 18:44:11,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462849983] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:44:11,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:44:11,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:44:11,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506092334] [2022-07-22 18:44:11,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:44:11,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:44:11,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:44:11,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:44:11,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:44:11,234 INFO L87 Difference]: Start difference. First operand 4251 states and 6379 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:11,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:44:11,801 INFO L93 Difference]: Finished difference Result 8447 states and 12702 transitions. [2022-07-22 18:44:11,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:44:11,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 98 [2022-07-22 18:44:11,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:44:11,808 INFO L225 Difference]: With dead ends: 8447 [2022-07-22 18:44:11,808 INFO L226 Difference]: Without dead ends: 4251 [2022-07-22 18:44:11,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:44:11,811 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 610 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:44:11,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 147 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:44:11,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4251 states. [2022-07-22 18:44:12,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4251 to 4251. [2022-07-22 18:44:12,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4251 states, 4250 states have (on average 1.4865882352941175) internal successors, (6318), 4250 states have internal predecessors, (6318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:12,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4251 states to 4251 states and 6318 transitions. [2022-07-22 18:44:12,303 INFO L78 Accepts]: Start accepts. Automaton has 4251 states and 6318 transitions. Word has length 98 [2022-07-22 18:44:12,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:44:12,303 INFO L495 AbstractCegarLoop]: Abstraction has 4251 states and 6318 transitions. [2022-07-22 18:44:12,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:12,320 INFO L276 IsEmpty]: Start isEmpty. Operand 4251 states and 6318 transitions. [2022-07-22 18:44:12,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-22 18:44:12,324 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:44:12,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:44:12,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 18:44:12,325 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:44:12,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:44:12,325 INFO L85 PathProgramCache]: Analyzing trace with hash -2092778770, now seen corresponding path program 1 times [2022-07-22 18:44:12,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:44:12,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940414521] [2022-07-22 18:44:12,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:44:12,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:44:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:44:12,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:44:12,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:44:12,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940414521] [2022-07-22 18:44:12,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940414521] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:44:12,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:44:12,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:44:12,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451318670] [2022-07-22 18:44:12,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:44:12,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:44:12,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:44:12,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:44:12,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:44:12,396 INFO L87 Difference]: Start difference. First operand 4251 states and 6318 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:12,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:44:12,950 INFO L93 Difference]: Finished difference Result 8435 states and 12568 transitions. [2022-07-22 18:44:12,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:44:12,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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 99 [2022-07-22 18:44:12,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:44:12,958 INFO L225 Difference]: With dead ends: 8435 [2022-07-22 18:44:12,958 INFO L226 Difference]: Without dead ends: 4251 [2022-07-22 18:44:12,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:44:12,962 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 568 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:44:12,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 171 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:44:12,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4251 states. [2022-07-22 18:44:13,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4251 to 4251. [2022-07-22 18:44:13,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4251 states, 4250 states have (on average 1.472235294117647) internal successors, (6257), 4250 states have internal predecessors, (6257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:13,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4251 states to 4251 states and 6257 transitions. [2022-07-22 18:44:13,486 INFO L78 Accepts]: Start accepts. Automaton has 4251 states and 6257 transitions. Word has length 99 [2022-07-22 18:44:13,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:44:13,487 INFO L495 AbstractCegarLoop]: Abstraction has 4251 states and 6257 transitions. [2022-07-22 18:44:13,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:13,487 INFO L276 IsEmpty]: Start isEmpty. Operand 4251 states and 6257 transitions. [2022-07-22 18:44:13,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-22 18:44:13,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:44:13,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:44:13,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 18:44:13,489 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:44:13,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:44:13,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1190401161, now seen corresponding path program 1 times [2022-07-22 18:44:13,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:44:13,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804698756] [2022-07-22 18:44:13,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:44:13,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:44:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:44:13,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:44:13,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:44:13,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804698756] [2022-07-22 18:44:13,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804698756] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:44:13,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:44:13,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:44:13,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995440860] [2022-07-22 18:44:13,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:44:13,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:44:13,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:44:13,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:44:13,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:44:13,547 INFO L87 Difference]: Start difference. First operand 4251 states and 6257 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:14,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:44:14,626 INFO L93 Difference]: Finished difference Result 7041 states and 10363 transitions. [2022-07-22 18:44:14,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 18:44:14,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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 100 [2022-07-22 18:44:14,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:44:14,639 INFO L225 Difference]: With dead ends: 7041 [2022-07-22 18:44:14,639 INFO L226 Difference]: Without dead ends: 7039 [2022-07-22 18:44:14,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 18:44:14,641 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 198 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:44:14,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 917 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:44:14,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7039 states. [2022-07-22 18:44:15,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7039 to 4279. [2022-07-22 18:44:15,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4279 states, 4278 states have (on average 1.465404394576905) internal successors, (6269), 4278 states have internal predecessors, (6269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:15,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4279 states to 4279 states and 6269 transitions. [2022-07-22 18:44:15,232 INFO L78 Accepts]: Start accepts. Automaton has 4279 states and 6269 transitions. Word has length 100 [2022-07-22 18:44:15,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:44:15,232 INFO L495 AbstractCegarLoop]: Abstraction has 4279 states and 6269 transitions. [2022-07-22 18:44:15,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:15,232 INFO L276 IsEmpty]: Start isEmpty. Operand 4279 states and 6269 transitions. [2022-07-22 18:44:15,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-22 18:44:15,233 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:44:15,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:44:15,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 18:44:15,234 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:44:15,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:44:15,234 INFO L85 PathProgramCache]: Analyzing trace with hash 97282675, now seen corresponding path program 1 times [2022-07-22 18:44:15,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:44:15,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751422132] [2022-07-22 18:44:15,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:44:15,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:44:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:44:15,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:44:15,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:44:15,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751422132] [2022-07-22 18:44:15,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751422132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:44:15,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:44:15,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 18:44:15,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025126146] [2022-07-22 18:44:15,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:44:15,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 18:44:15,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:44:15,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 18:44:15,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:44:15,402 INFO L87 Difference]: Start difference. First operand 4279 states and 6269 transitions. Second operand has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:17,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:44:17,235 INFO L93 Difference]: Finished difference Result 12532 states and 18337 transitions. [2022-07-22 18:44:17,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 18:44:17,235 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 12 states have internal predecessors, (100), 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 100 [2022-07-22 18:44:17,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:44:17,248 INFO L225 Difference]: With dead ends: 12532 [2022-07-22 18:44:17,248 INFO L226 Difference]: Without dead ends: 8488 [2022-07-22 18:44:17,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-07-22 18:44:17,254 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 1635 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1635 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:44:17,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1635 Valid, 611 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:44:17,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8488 states. [2022-07-22 18:44:17,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8488 to 4279. [2022-07-22 18:44:17,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4279 states, 4278 states have (on average 1.4628330995792427) internal successors, (6258), 4278 states have internal predecessors, (6258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:17,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4279 states to 4279 states and 6258 transitions. [2022-07-22 18:44:17,960 INFO L78 Accepts]: Start accepts. Automaton has 4279 states and 6258 transitions. Word has length 100 [2022-07-22 18:44:17,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:44:17,960 INFO L495 AbstractCegarLoop]: Abstraction has 4279 states and 6258 transitions. [2022-07-22 18:44:17,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:17,960 INFO L276 IsEmpty]: Start isEmpty. Operand 4279 states and 6258 transitions. [2022-07-22 18:44:17,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 18:44:17,961 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:44:17,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:44:17,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 18:44:17,962 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:44:17,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:44:17,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1807427751, now seen corresponding path program 1 times [2022-07-22 18:44:17,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:44:17,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142907157] [2022-07-22 18:44:17,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:44:17,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:44:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:44:18,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:44:18,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:44:18,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142907157] [2022-07-22 18:44:18,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142907157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:44:18,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:44:18,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 18:44:18,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105800325] [2022-07-22 18:44:18,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:44:18,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 18:44:18,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:44:18,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 18:44:18,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:44:18,153 INFO L87 Difference]: Start difference. First operand 4279 states and 6258 transitions. Second operand has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:20,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:44:20,278 INFO L93 Difference]: Finished difference Result 12432 states and 18166 transitions. [2022-07-22 18:44:20,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 18:44:20,278 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 12 states have internal predecessors, (101), 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 101 [2022-07-22 18:44:20,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:44:20,295 INFO L225 Difference]: With dead ends: 12432 [2022-07-22 18:44:20,295 INFO L226 Difference]: Without dead ends: 8443 [2022-07-22 18:44:20,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-07-22 18:44:20,303 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 1400 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:44:20,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1400 Valid, 728 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:44:20,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8443 states. [2022-07-22 18:44:21,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8443 to 4279. [2022-07-22 18:44:21,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4279 states, 4278 states have (on average 1.459794296400187) internal successors, (6245), 4278 states have internal predecessors, (6245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:21,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4279 states to 4279 states and 6245 transitions. [2022-07-22 18:44:21,175 INFO L78 Accepts]: Start accepts. Automaton has 4279 states and 6245 transitions. Word has length 101 [2022-07-22 18:44:21,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:44:21,176 INFO L495 AbstractCegarLoop]: Abstraction has 4279 states and 6245 transitions. [2022-07-22 18:44:21,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:21,176 INFO L276 IsEmpty]: Start isEmpty. Operand 4279 states and 6245 transitions. [2022-07-22 18:44:21,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 18:44:21,177 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:44:21,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:44:21,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 18:44:21,177 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:44:21,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:44:21,178 INFO L85 PathProgramCache]: Analyzing trace with hash -549863887, now seen corresponding path program 1 times [2022-07-22 18:44:21,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:44:21,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149594973] [2022-07-22 18:44:21,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:44:21,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:44:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:44:21,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:44:21,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:44:21,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149594973] [2022-07-22 18:44:21,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149594973] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:44:21,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:44:21,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 18:44:21,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927173673] [2022-07-22 18:44:21,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:44:21,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 18:44:21,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:44:21,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 18:44:21,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:44:21,367 INFO L87 Difference]: Start difference. First operand 4279 states and 6245 transitions. Second operand has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:22,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:44:22,969 INFO L93 Difference]: Finished difference Result 10619 states and 15471 transitions. [2022-07-22 18:44:22,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 18:44:22,971 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 12 states have internal predecessors, (101), 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 101 [2022-07-22 18:44:22,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:44:22,979 INFO L225 Difference]: With dead ends: 10619 [2022-07-22 18:44:22,979 INFO L226 Difference]: Without dead ends: 6485 [2022-07-22 18:44:22,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-07-22 18:44:22,983 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 1383 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:44:22,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1383 Valid, 522 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:44:22,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6485 states. [2022-07-22 18:44:23,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6485 to 4279. [2022-07-22 18:44:23,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4279 states, 4278 states have (on average 1.4590930341280972) internal successors, (6242), 4278 states have internal predecessors, (6242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:23,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4279 states to 4279 states and 6242 transitions. [2022-07-22 18:44:23,840 INFO L78 Accepts]: Start accepts. Automaton has 4279 states and 6242 transitions. Word has length 101 [2022-07-22 18:44:23,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:44:23,840 INFO L495 AbstractCegarLoop]: Abstraction has 4279 states and 6242 transitions. [2022-07-22 18:44:23,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:23,841 INFO L276 IsEmpty]: Start isEmpty. Operand 4279 states and 6242 transitions. [2022-07-22 18:44:23,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 18:44:23,842 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:44:23,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:44:23,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 18:44:23,842 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:44:23,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:44:23,842 INFO L85 PathProgramCache]: Analyzing trace with hash 990240365, now seen corresponding path program 1 times [2022-07-22 18:44:23,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:44:23,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483791753] [2022-07-22 18:44:23,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:44:23,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:44:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:44:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:44:23,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:44:23,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483791753] [2022-07-22 18:44:23,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483791753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:44:23,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:44:23,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:44:23,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997451180] [2022-07-22 18:44:23,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:44:23,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:44:23,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:44:23,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:44:23,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:44:23,944 INFO L87 Difference]: Start difference. First operand 4279 states and 6242 transitions. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:25,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:44:25,934 INFO L93 Difference]: Finished difference Result 12341 states and 18068 transitions. [2022-07-22 18:44:25,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 18:44:25,935 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2022-07-22 18:44:25,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:44:25,942 INFO L225 Difference]: With dead ends: 12341 [2022-07-22 18:44:25,942 INFO L226 Difference]: Without dead ends: 8268 [2022-07-22 18:44:25,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-07-22 18:44:25,946 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 725 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:44:25,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 509 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:44:25,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8268 states. [2022-07-22 18:44:26,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8268 to 4279. [2022-07-22 18:44:26,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4279 states, 4278 states have (on average 1.4588592800374007) internal successors, (6241), 4278 states have internal predecessors, (6241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:26,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4279 states to 4279 states and 6241 transitions. [2022-07-22 18:44:26,898 INFO L78 Accepts]: Start accepts. Automaton has 4279 states and 6241 transitions. Word has length 102 [2022-07-22 18:44:26,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:44:26,898 INFO L495 AbstractCegarLoop]: Abstraction has 4279 states and 6241 transitions. [2022-07-22 18:44:26,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:26,898 INFO L276 IsEmpty]: Start isEmpty. Operand 4279 states and 6241 transitions. [2022-07-22 18:44:26,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-22 18:44:26,899 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:44:26,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:44:26,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 18:44:26,899 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:44:26,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:44:26,900 INFO L85 PathProgramCache]: Analyzing trace with hash -978591820, now seen corresponding path program 1 times [2022-07-22 18:44:26,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:44:26,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993461856] [2022-07-22 18:44:26,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:44:26,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:44:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:44:27,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:44:27,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:44:27,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993461856] [2022-07-22 18:44:27,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993461856] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:44:27,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:44:27,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:44:27,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249492832] [2022-07-22 18:44:27,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:44:27,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:44:27,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:44:27,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:44:27,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:44:27,016 INFO L87 Difference]: Start difference. First operand 4279 states and 6241 transitions. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:29,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:44:29,548 INFO L93 Difference]: Finished difference Result 12652 states and 18461 transitions. [2022-07-22 18:44:29,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 18:44:29,548 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 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 103 [2022-07-22 18:44:29,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:44:29,558 INFO L225 Difference]: With dead ends: 12652 [2022-07-22 18:44:29,558 INFO L226 Difference]: Without dead ends: 8533 [2022-07-22 18:44:29,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-07-22 18:44:29,562 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 1498 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:44:29,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 653 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:44:29,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8533 states. [2022-07-22 18:44:30,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8533 to 4279. [2022-07-22 18:44:30,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4279 states, 4278 states have (on average 1.4574567554932212) internal successors, (6235), 4278 states have internal predecessors, (6235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:30,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4279 states to 4279 states and 6235 transitions. [2022-07-22 18:44:30,637 INFO L78 Accepts]: Start accepts. Automaton has 4279 states and 6235 transitions. Word has length 103 [2022-07-22 18:44:30,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:44:30,638 INFO L495 AbstractCegarLoop]: Abstraction has 4279 states and 6235 transitions. [2022-07-22 18:44:30,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:30,638 INFO L276 IsEmpty]: Start isEmpty. Operand 4279 states and 6235 transitions. [2022-07-22 18:44:30,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 18:44:30,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:44:30,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:44:30,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 18:44:30,639 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:44:30,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:44:30,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1171905365, now seen corresponding path program 1 times [2022-07-22 18:44:30,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:44:30,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048221032] [2022-07-22 18:44:30,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:44:30,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:44:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:44:30,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:44:30,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:44:30,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048221032] [2022-07-22 18:44:30,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048221032] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:44:30,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:44:30,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 18:44:30,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179477743] [2022-07-22 18:44:30,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:44:30,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 18:44:30,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:44:30,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 18:44:30,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:44:30,866 INFO L87 Difference]: Start difference. First operand 4279 states and 6235 transitions. Second operand has 13 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:44:59,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:44:59,848 INFO L93 Difference]: Finished difference Result 93680 states and 136341 transitions. [2022-07-22 18:44:59,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-22 18:44:59,850 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 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 104 [2022-07-22 18:44:59,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:44:59,988 INFO L225 Difference]: With dead ends: 93680 [2022-07-22 18:44:59,988 INFO L226 Difference]: Without dead ends: 89591 [2022-07-22 18:45:00,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=627, Invalid=2025, Unknown=0, NotChecked=0, Total=2652 [2022-07-22 18:45:00,020 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 5779 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5779 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:00,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5779 Valid, 1738 Invalid, 1712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 18:45:00,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89591 states. [2022-07-22 18:45:02,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89591 to 4297. [2022-07-22 18:45:02,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4297 states, 4296 states have (on average 1.4548417132216014) internal successors, (6250), 4296 states have internal predecessors, (6250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:02,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4297 states to 4297 states and 6250 transitions. [2022-07-22 18:45:02,413 INFO L78 Accepts]: Start accepts. Automaton has 4297 states and 6250 transitions. Word has length 104 [2022-07-22 18:45:02,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:02,414 INFO L495 AbstractCegarLoop]: Abstraction has 4297 states and 6250 transitions. [2022-07-22 18:45:02,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:02,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4297 states and 6250 transitions. [2022-07-22 18:45:02,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 18:45:02,415 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:02,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:45:02,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 18:45:02,415 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:02,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:02,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1475383422, now seen corresponding path program 1 times [2022-07-22 18:45:02,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:02,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600382145] [2022-07-22 18:45:02,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:02,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:02,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:02,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:02,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600382145] [2022-07-22 18:45:02,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600382145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:02,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:02,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 18:45:02,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810520931] [2022-07-22 18:45:02,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:02,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 18:45:02,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:02,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 18:45:02,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-22 18:45:02,735 INFO L87 Difference]: Start difference. First operand 4297 states and 6250 transitions. Second operand has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:17,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:17,461 INFO L93 Difference]: Finished difference Result 33599 states and 49228 transitions. [2022-07-22 18:45:17,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 18:45:17,462 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 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 105 [2022-07-22 18:45:17,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:17,503 INFO L225 Difference]: With dead ends: 33599 [2022-07-22 18:45:17,503 INFO L226 Difference]: Without dead ends: 32493 [2022-07-22 18:45:17,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-07-22 18:45:17,512 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 2214 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2214 SdHoareTripleChecker+Valid, 3689 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:17,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2214 Valid, 3689 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 18:45:17,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32493 states. [2022-07-22 18:45:19,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32493 to 4275. [2022-07-22 18:45:19,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4275 states, 4274 states have (on average 1.4532054281703322) internal successors, (6211), 4274 states have internal predecessors, (6211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:19,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4275 states to 4275 states and 6211 transitions. [2022-07-22 18:45:19,781 INFO L78 Accepts]: Start accepts. Automaton has 4275 states and 6211 transitions. Word has length 105 [2022-07-22 18:45:19,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:19,781 INFO L495 AbstractCegarLoop]: Abstraction has 4275 states and 6211 transitions. [2022-07-22 18:45:19,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:19,782 INFO L276 IsEmpty]: Start isEmpty. Operand 4275 states and 6211 transitions. [2022-07-22 18:45:19,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 18:45:19,792 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:19,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:45:19,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 18:45:19,793 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:19,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:19,811 INFO L85 PathProgramCache]: Analyzing trace with hash -2129597379, now seen corresponding path program 1 times [2022-07-22 18:45:19,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:19,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200393730] [2022-07-22 18:45:19,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:19,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:20,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:20,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200393730] [2022-07-22 18:45:20,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200393730] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:20,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:20,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-07-22 18:45:20,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751865600] [2022-07-22 18:45:20,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:20,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-22 18:45:20,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:20,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-22 18:45:20,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2022-07-22 18:45:20,684 INFO L87 Difference]: Start difference. First operand 4275 states and 6211 transitions. Second operand has 25 states, 25 states have (on average 4.2) internal successors, (105), 25 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:33,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:33,187 INFO L93 Difference]: Finished difference Result 17886 states and 26143 transitions. [2022-07-22 18:45:33,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-22 18:45:33,187 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.2) internal successors, (105), 25 states have internal predecessors, (105), 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 105 [2022-07-22 18:45:33,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:33,210 INFO L225 Difference]: With dead ends: 17886 [2022-07-22 18:45:33,211 INFO L226 Difference]: Without dead ends: 16780 [2022-07-22 18:45:33,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=620, Invalid=2572, Unknown=0, NotChecked=0, Total=3192 [2022-07-22 18:45:33,217 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 2613 mSDsluCounter, 9679 mSDsCounter, 0 mSdLazyCounter, 3523 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2613 SdHoareTripleChecker+Valid, 10388 SdHoareTripleChecker+Invalid, 3611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:33,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2613 Valid, 10388 Invalid, 3611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3523 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 18:45:33,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16780 states. [2022-07-22 18:45:35,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16780 to 4281. [2022-07-22 18:45:35,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4281 states, 4280 states have (on average 1.452336448598131) internal successors, (6216), 4280 states have internal predecessors, (6216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:35,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4281 states to 4281 states and 6216 transitions. [2022-07-22 18:45:35,407 INFO L78 Accepts]: Start accepts. Automaton has 4281 states and 6216 transitions. Word has length 105 [2022-07-22 18:45:35,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:35,407 INFO L495 AbstractCegarLoop]: Abstraction has 4281 states and 6216 transitions. [2022-07-22 18:45:35,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.2) internal successors, (105), 25 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:35,407 INFO L276 IsEmpty]: Start isEmpty. Operand 4281 states and 6216 transitions. [2022-07-22 18:45:35,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 18:45:35,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:35,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:45:35,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 18:45:35,409 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:35,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:35,409 INFO L85 PathProgramCache]: Analyzing trace with hash -775551045, now seen corresponding path program 1 times [2022-07-22 18:45:35,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:35,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025463914] [2022-07-22 18:45:35,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:35,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:35,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:35,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025463914] [2022-07-22 18:45:35,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025463914] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:35,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:35,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:45:35,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698346813] [2022-07-22 18:45:35,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:35,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:45:35,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:35,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:45:35,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:45:35,530 INFO L87 Difference]: Start difference. First operand 4281 states and 6216 transitions. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:40,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:40,734 INFO L93 Difference]: Finished difference Result 12538 states and 18258 transitions. [2022-07-22 18:45:40,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 18:45:40,734 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 9 states have internal predecessors, (105), 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 105 [2022-07-22 18:45:40,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:40,745 INFO L225 Difference]: With dead ends: 12538 [2022-07-22 18:45:40,745 INFO L226 Difference]: Without dead ends: 8476 [2022-07-22 18:45:40,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-07-22 18:45:40,753 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 1172 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:40,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 654 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:45:40,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8476 states. [2022-07-22 18:45:43,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8476 to 4269. [2022-07-22 18:45:43,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4269 states, 4268 states have (on average 1.4522024367385191) internal successors, (6198), 4268 states have internal predecessors, (6198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:43,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4269 states to 4269 states and 6198 transitions. [2022-07-22 18:45:43,038 INFO L78 Accepts]: Start accepts. Automaton has 4269 states and 6198 transitions. Word has length 105 [2022-07-22 18:45:43,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:43,039 INFO L495 AbstractCegarLoop]: Abstraction has 4269 states and 6198 transitions. [2022-07-22 18:45:43,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:43,039 INFO L276 IsEmpty]: Start isEmpty. Operand 4269 states and 6198 transitions. [2022-07-22 18:45:43,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 18:45:43,040 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:43,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:45:43,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 18:45:43,040 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:43,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:43,041 INFO L85 PathProgramCache]: Analyzing trace with hash -285463969, now seen corresponding path program 1 times [2022-07-22 18:45:43,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:43,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462078465] [2022-07-22 18:45:43,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:43,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:43,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:43,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:43,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462078465] [2022-07-22 18:45:43,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462078465] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:43,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:43,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 18:45:43,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812908864] [2022-07-22 18:45:43,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:43,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 18:45:43,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:43,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 18:45:43,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:45:43,279 INFO L87 Difference]: Start difference. First operand 4269 states and 6198 transitions. Second operand has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 13 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:53,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:45:53,354 INFO L93 Difference]: Finished difference Result 17335 states and 25364 transitions. [2022-07-22 18:45:53,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 18:45:53,354 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 13 states have internal predecessors, (105), 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 105 [2022-07-22 18:45:53,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:45:53,372 INFO L225 Difference]: With dead ends: 17335 [2022-07-22 18:45:53,372 INFO L226 Difference]: Without dead ends: 16269 [2022-07-22 18:45:53,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-07-22 18:45:53,376 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 1836 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1836 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:45:53,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1836 Valid, 1620 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:45:53,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16269 states. [2022-07-22 18:45:55,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16269 to 4267. [2022-07-22 18:45:55,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4267 states, 4266 states have (on average 1.4498359118612283) internal successors, (6185), 4266 states have internal predecessors, (6185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:55,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4267 states to 4267 states and 6185 transitions. [2022-07-22 18:45:55,924 INFO L78 Accepts]: Start accepts. Automaton has 4267 states and 6185 transitions. Word has length 105 [2022-07-22 18:45:55,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:45:55,925 INFO L495 AbstractCegarLoop]: Abstraction has 4267 states and 6185 transitions. [2022-07-22 18:45:55,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 13 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:45:55,926 INFO L276 IsEmpty]: Start isEmpty. Operand 4267 states and 6185 transitions. [2022-07-22 18:45:55,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 18:45:55,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:45:55,944 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:45:55,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 18:45:55,944 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:45:55,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:45:55,945 INFO L85 PathProgramCache]: Analyzing trace with hash -344221858, now seen corresponding path program 1 times [2022-07-22 18:45:55,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:45:55,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966599224] [2022-07-22 18:45:55,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:45:55,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:45:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:45:56,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:45:56,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:45:56,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966599224] [2022-07-22 18:45:56,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966599224] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:45:56,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:45:56,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 18:45:56,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483677777] [2022-07-22 18:45:56,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:45:56,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 18:45:56,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:45:56,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 18:45:56,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:45:56,239 INFO L87 Difference]: Start difference. First operand 4267 states and 6185 transitions. Second operand has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 13 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:46:07,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:46:07,903 INFO L93 Difference]: Finished difference Result 17532 states and 25597 transitions. [2022-07-22 18:46:07,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 18:46:07,903 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 13 states have internal predecessors, (105), 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 105 [2022-07-22 18:46:07,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:46:07,920 INFO L225 Difference]: With dead ends: 17532 [2022-07-22 18:46:07,921 INFO L226 Difference]: Without dead ends: 16402 [2022-07-22 18:46:07,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-07-22 18:46:07,925 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 1523 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:46:07,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 2186 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:46:07,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16402 states. [2022-07-22 18:46:10,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16402 to 4225. [2022-07-22 18:46:10,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4225 states, 4224 states have (on average 1.4505208333333333) internal successors, (6127), 4224 states have internal predecessors, (6127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:46:10,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4225 states to 4225 states and 6127 transitions. [2022-07-22 18:46:10,851 INFO L78 Accepts]: Start accepts. Automaton has 4225 states and 6127 transitions. Word has length 105 [2022-07-22 18:46:10,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:46:10,851 INFO L495 AbstractCegarLoop]: Abstraction has 4225 states and 6127 transitions. [2022-07-22 18:46:10,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 13 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:46:10,852 INFO L276 IsEmpty]: Start isEmpty. Operand 4225 states and 6127 transitions. [2022-07-22 18:46:10,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 18:46:10,852 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:46:10,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:46:10,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 18:46:10,853 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:46:10,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:46:10,853 INFO L85 PathProgramCache]: Analyzing trace with hash 716052892, now seen corresponding path program 1 times [2022-07-22 18:46:10,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:46:10,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123924709] [2022-07-22 18:46:10,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:46:10,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:46:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:46:11,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:46:11,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:46:11,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123924709] [2022-07-22 18:46:11,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123924709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:46:11,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:46:11,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 18:46:11,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681915230] [2022-07-22 18:46:11,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:46:11,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 18:46:11,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:46:11,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 18:46:11,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-22 18:46:11,206 INFO L87 Difference]: Start difference. First operand 4225 states and 6127 transitions. Second operand has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:46:23,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:46:23,919 INFO L93 Difference]: Finished difference Result 17229 states and 25214 transitions. [2022-07-22 18:46:23,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 18:46:23,919 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 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 105 [2022-07-22 18:46:23,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:46:23,940 INFO L225 Difference]: With dead ends: 17229 [2022-07-22 18:46:23,940 INFO L226 Difference]: Without dead ends: 16116 [2022-07-22 18:46:23,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=159, Invalid=393, Unknown=0, NotChecked=0, Total=552 [2022-07-22 18:46:23,946 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 1099 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:46:23,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 2255 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:46:23,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16116 states. [2022-07-22 18:46:27,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16116 to 4180. [2022-07-22 18:46:27,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4180 states, 4179 states have (on average 1.4525005982292414) internal successors, (6070), 4179 states have internal predecessors, (6070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:46:27,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4180 states to 4180 states and 6070 transitions. [2022-07-22 18:46:27,192 INFO L78 Accepts]: Start accepts. Automaton has 4180 states and 6070 transitions. Word has length 105 [2022-07-22 18:46:27,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:46:27,193 INFO L495 AbstractCegarLoop]: Abstraction has 4180 states and 6070 transitions. [2022-07-22 18:46:27,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:46:27,193 INFO L276 IsEmpty]: Start isEmpty. Operand 4180 states and 6070 transitions. [2022-07-22 18:46:27,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 18:46:27,209 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:46:27,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:46:27,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 18:46:27,209 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:46:27,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:46:27,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1087357490, now seen corresponding path program 1 times [2022-07-22 18:46:27,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:46:27,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272596687] [2022-07-22 18:46:27,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:46:27,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:46:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:46:28,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:46:28,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:46:28,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272596687] [2022-07-22 18:46:28,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272596687] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:46:28,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:46:28,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-07-22 18:46:28,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123923606] [2022-07-22 18:46:28,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:46:28,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-22 18:46:28,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:46:28,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-22 18:46:28,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-07-22 18:46:28,568 INFO L87 Difference]: Start difference. First operand 4180 states and 6070 transitions. Second operand has 32 states, 32 states have (on average 3.3125) internal successors, (106), 32 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:46:54,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:46:54,777 INFO L93 Difference]: Finished difference Result 25882 states and 37886 transitions. [2022-07-22 18:46:54,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-22 18:46:54,778 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.3125) internal successors, (106), 32 states have internal predecessors, (106), 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 106 [2022-07-22 18:46:54,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:46:54,813 INFO L225 Difference]: With dead ends: 25882 [2022-07-22 18:46:54,814 INFO L226 Difference]: Without dead ends: 24818 [2022-07-22 18:46:54,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=675, Invalid=3357, Unknown=0, NotChecked=0, Total=4032 [2022-07-22 18:46:54,822 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 2524 mSDsluCounter, 8699 mSDsCounter, 0 mSdLazyCounter, 4936 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2524 SdHoareTripleChecker+Valid, 9174 SdHoareTripleChecker+Invalid, 5025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 4936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 18:46:54,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2524 Valid, 9174 Invalid, 5025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 4936 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 18:46:54,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24818 states. [2022-07-22 18:46:58,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24818 to 4204. [2022-07-22 18:46:58,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4204 states, 4203 states have (on average 1.4511063526052819) internal successors, (6099), 4203 states have internal predecessors, (6099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:46:58,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4204 states to 4204 states and 6099 transitions. [2022-07-22 18:46:58,429 INFO L78 Accepts]: Start accepts. Automaton has 4204 states and 6099 transitions. Word has length 106 [2022-07-22 18:46:58,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:46:58,430 INFO L495 AbstractCegarLoop]: Abstraction has 4204 states and 6099 transitions. [2022-07-22 18:46:58,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.3125) internal successors, (106), 32 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:46:58,430 INFO L276 IsEmpty]: Start isEmpty. Operand 4204 states and 6099 transitions. [2022-07-22 18:46:58,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 18:46:58,431 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:46:58,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:46:58,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 18:46:58,431 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:46:58,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:46:58,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1567451949, now seen corresponding path program 1 times [2022-07-22 18:46:58,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:46:58,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027311302] [2022-07-22 18:46:58,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:46:58,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:46:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:46:58,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:46:58,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:46:58,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027311302] [2022-07-22 18:46:58,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027311302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:46:58,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:46:58,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 18:46:58,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723755271] [2022-07-22 18:46:58,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:46:58,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 18:46:58,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:46:58,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 18:46:58,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:46:58,685 INFO L87 Difference]: Start difference. First operand 4204 states and 6099 transitions. Second operand has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 13 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:47:06,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:47:06,329 INFO L93 Difference]: Finished difference Result 9310 states and 13580 transitions. [2022-07-22 18:47:06,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 18:47:06,330 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 13 states have internal predecessors, (106), 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 106 [2022-07-22 18:47:06,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:47:06,337 INFO L225 Difference]: With dead ends: 9310 [2022-07-22 18:47:06,338 INFO L226 Difference]: Without dead ends: 8176 [2022-07-22 18:47:06,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2022-07-22 18:47:06,340 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 985 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:47:06,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 2149 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:47:06,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8176 states. [2022-07-22 18:47:09,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8176 to 4132. [2022-07-22 18:47:09,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4132 states, 4131 states have (on average 1.4550956184943113) internal successors, (6011), 4131 states have internal predecessors, (6011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:47:09,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4132 states to 4132 states and 6011 transitions. [2022-07-22 18:47:09,922 INFO L78 Accepts]: Start accepts. Automaton has 4132 states and 6011 transitions. Word has length 106 [2022-07-22 18:47:09,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:47:09,922 INFO L495 AbstractCegarLoop]: Abstraction has 4132 states and 6011 transitions. [2022-07-22 18:47:09,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 13 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:47:09,922 INFO L276 IsEmpty]: Start isEmpty. Operand 4132 states and 6011 transitions. [2022-07-22 18:47:09,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 18:47:09,923 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:47:09,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:47:09,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-22 18:47:09,923 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:47:09,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:47:09,923 INFO L85 PathProgramCache]: Analyzing trace with hash 392357586, now seen corresponding path program 1 times [2022-07-22 18:47:09,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:47:09,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315470673] [2022-07-22 18:47:09,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:47:09,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:47:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:47:11,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:47:11,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:47:11,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315470673] [2022-07-22 18:47:11,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315470673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:47:11,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:47:11,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-07-22 18:47:11,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226941511] [2022-07-22 18:47:11,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:47:11,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-22 18:47:11,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:47:11,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-22 18:47:11,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1245, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 18:47:11,102 INFO L87 Difference]: Start difference. First operand 4132 states and 6011 transitions. Second operand has 37 states, 37 states have (on average 2.864864864864865) internal successors, (106), 37 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:47:26,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:47:26,893 INFO L93 Difference]: Finished difference Result 16142 states and 23621 transitions. [2022-07-22 18:47:26,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-22 18:47:26,894 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.864864864864865) internal successors, (106), 37 states have internal predecessors, (106), 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 106 [2022-07-22 18:47:26,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:47:26,909 INFO L225 Difference]: With dead ends: 16142 [2022-07-22 18:47:26,909 INFO L226 Difference]: Without dead ends: 12164 [2022-07-22 18:47:26,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=725, Invalid=4245, Unknown=0, NotChecked=0, Total=4970 [2022-07-22 18:47:26,914 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 1090 mSDsluCounter, 7940 mSDsCounter, 0 mSdLazyCounter, 5506 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 8270 SdHoareTripleChecker+Invalid, 5560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 5506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:47:26,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 8270 Invalid, 5560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 5506 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 18:47:26,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12164 states. [2022-07-22 18:47:30,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12164 to 4148. [2022-07-22 18:47:30,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 4147 states have (on average 1.4540631782011093) internal successors, (6030), 4147 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:47:30,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 6030 transitions. [2022-07-22 18:47:30,799 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 6030 transitions. Word has length 106 [2022-07-22 18:47:30,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:47:30,799 INFO L495 AbstractCegarLoop]: Abstraction has 4148 states and 6030 transitions. [2022-07-22 18:47:30,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.864864864864865) internal successors, (106), 37 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:47:30,800 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 6030 transitions. [2022-07-22 18:47:30,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-22 18:47:30,800 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:47:30,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:47:30,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-22 18:47:30,801 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:47:30,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:47:30,802 INFO L85 PathProgramCache]: Analyzing trace with hash -835958753, now seen corresponding path program 1 times [2022-07-22 18:47:30,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:47:30,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040197257] [2022-07-22 18:47:30,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:47:30,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:47:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:47:31,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:47:31,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:47:31,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040197257] [2022-07-22 18:47:31,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040197257] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:47:31,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:47:31,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 18:47:31,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867894757] [2022-07-22 18:47:31,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:47:31,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 18:47:31,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:47:31,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 18:47:31,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-22 18:47:31,167 INFO L87 Difference]: Start difference. First operand 4148 states and 6030 transitions. Second operand has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:47:55,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:47:55,042 INFO L93 Difference]: Finished difference Result 25137 states and 36834 transitions. [2022-07-22 18:47:55,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 18:47:55,043 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 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 107 [2022-07-22 18:47:55,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:47:55,070 INFO L225 Difference]: With dead ends: 25137 [2022-07-22 18:47:55,070 INFO L226 Difference]: Without dead ends: 24059 [2022-07-22 18:47:55,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-07-22 18:47:55,075 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 1430 mSDsluCounter, 3648 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 4141 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:47:55,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 4141 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:47:55,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24059 states. [2022-07-22 18:47:59,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24059 to 4122. [2022-07-22 18:47:59,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4122 states, 4121 states have (on average 1.4552293132734773) internal successors, (5997), 4121 states have internal predecessors, (5997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:47:59,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4122 states to 4122 states and 5997 transitions. [2022-07-22 18:47:59,271 INFO L78 Accepts]: Start accepts. Automaton has 4122 states and 5997 transitions. Word has length 107 [2022-07-22 18:47:59,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:47:59,271 INFO L495 AbstractCegarLoop]: Abstraction has 4122 states and 5997 transitions. [2022-07-22 18:47:59,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:47:59,271 INFO L276 IsEmpty]: Start isEmpty. Operand 4122 states and 5997 transitions. [2022-07-22 18:47:59,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-22 18:47:59,272 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:47:59,272 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:47:59,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-22 18:47:59,272 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:47:59,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:47:59,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1041143963, now seen corresponding path program 1 times [2022-07-22 18:47:59,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:47:59,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839713517] [2022-07-22 18:47:59,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:47:59,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:47:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:47:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:47:59,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:47:59,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839713517] [2022-07-22 18:47:59,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839713517] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:47:59,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:47:59,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:47:59,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122179694] [2022-07-22 18:47:59,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:47:59,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:47:59,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:47:59,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:47:59,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:47:59,318 INFO L87 Difference]: Start difference. First operand 4122 states and 5997 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:48:05,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:48:05,196 INFO L93 Difference]: Finished difference Result 9752 states and 14268 transitions. [2022-07-22 18:48:05,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:48:05,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 107 [2022-07-22 18:48:05,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:48:05,202 INFO L225 Difference]: With dead ends: 9752 [2022-07-22 18:48:05,202 INFO L226 Difference]: Without dead ends: 5776 [2022-07-22 18:48:05,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:48:05,204 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 175 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:48:05,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 610 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:48:05,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5776 states. [2022-07-22 18:48:10,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5776 to 5774. [2022-07-22 18:48:10,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5774 states, 5773 states have (on average 1.453317166118136) internal successors, (8390), 5773 states have internal predecessors, (8390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:48:10,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5774 states to 5774 states and 8390 transitions. [2022-07-22 18:48:10,792 INFO L78 Accepts]: Start accepts. Automaton has 5774 states and 8390 transitions. Word has length 107 [2022-07-22 18:48:10,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:48:10,792 INFO L495 AbstractCegarLoop]: Abstraction has 5774 states and 8390 transitions. [2022-07-22 18:48:10,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:48:10,792 INFO L276 IsEmpty]: Start isEmpty. Operand 5774 states and 8390 transitions. [2022-07-22 18:48:10,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-22 18:48:10,794 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:48:10,794 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:48:10,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-22 18:48:10,794 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:48:10,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:48:10,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1624576542, now seen corresponding path program 1 times [2022-07-22 18:48:10,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:48:10,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181999564] [2022-07-22 18:48:10,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:48:10,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:48:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:48:10,852 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:48:10,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:48:10,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181999564] [2022-07-22 18:48:10,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181999564] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:48:10,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:48:10,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:48:10,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648322269] [2022-07-22 18:48:10,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:48:10,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:48:10,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:48:10,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:48:10,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:48:10,853 INFO L87 Difference]: Start difference. First operand 5774 states and 8390 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:48:18,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:48:18,994 INFO L93 Difference]: Finished difference Result 12012 states and 17513 transitions. [2022-07-22 18:48:18,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:48:18,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 139 [2022-07-22 18:48:18,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:48:19,002 INFO L225 Difference]: With dead ends: 12012 [2022-07-22 18:48:19,002 INFO L226 Difference]: Without dead ends: 8036 [2022-07-22 18:48:19,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:48:19,005 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 99 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 472 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 [2022-07-22 18:48:19,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 472 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:48:19,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8036 states. [2022-07-22 18:48:26,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8036 to 7786. [2022-07-22 18:48:26,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7786 states, 7785 states have (on average 1.44791265253693) internal successors, (11272), 7785 states have internal predecessors, (11272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:48:26,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7786 states to 7786 states and 11272 transitions. [2022-07-22 18:48:26,654 INFO L78 Accepts]: Start accepts. Automaton has 7786 states and 11272 transitions. Word has length 139 [2022-07-22 18:48:26,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:48:26,654 INFO L495 AbstractCegarLoop]: Abstraction has 7786 states and 11272 transitions. [2022-07-22 18:48:26,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:48:26,654 INFO L276 IsEmpty]: Start isEmpty. Operand 7786 states and 11272 transitions. [2022-07-22 18:48:26,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-22 18:48:26,655 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:48:26,656 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:48:26,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-22 18:48:26,656 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:48:26,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:48:26,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1544847095, now seen corresponding path program 1 times [2022-07-22 18:48:26,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:48:26,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740562720] [2022-07-22 18:48:26,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:48:26,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:48:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:48:26,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:48:26,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:48:26,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740562720] [2022-07-22 18:48:26,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740562720] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:48:26,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:48:26,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:48:26,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677597089] [2022-07-22 18:48:26,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:48:26,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 18:48:26,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:48:26,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 18:48:26,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:48:26,708 INFO L87 Difference]: Start difference. First operand 7786 states and 11272 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 6 states have internal predecessors, (141), 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)