./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a61d3db55f61e1c69c316c83f1e37b4c9c56a755bd5e8fcd2da0d467aefc9f7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 06:47:18,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:47:18,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:47:18,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:47:18,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:47:18,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:47:18,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:47:18,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:47:18,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:47:18,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:47:18,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:47:18,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:47:18,914 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:47:18,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:47:18,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:47:18,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:47:18,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:47:18,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:47:18,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:47:18,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:47:18,921 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:47:18,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:47:18,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:47:18,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:47:18,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:47:18,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:47:18,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:47:18,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:47:18,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:47:18,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:47:18,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:47:18,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:47:18,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:47:18,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:47:18,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:47:18,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:47:18,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:47:18,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:47:18,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:47:18,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:47:18,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:47:18,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:47:18,943 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:47:18,963 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:47:18,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:47:18,963 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:47:18,963 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:47:18,964 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:47:18,964 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:47:18,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:47:18,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:47:18,965 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:47:18,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:47:18,965 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:47:18,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:47:18,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:47:18,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:47:18,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:47:18,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:47:18,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:47:18,967 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:47:18,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:47:18,967 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:47:18,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:47:18,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:47:18,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:47:18,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:47:18,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:47:18,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:47:18,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:47:18,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:47:18,968 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:47:18,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:47:18,969 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:47:18,969 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:47:18,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:47:18,969 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a61d3db55f61e1c69c316c83f1e37b4c9c56a755bd5e8fcd2da0d467aefc9f7 [2022-07-12 06:47:19,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:47:19,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:47:19,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:47:19,161 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:47:19,163 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:47:19,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c [2022-07-12 06:47:19,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f24896250/9d8744916e9544dba880b9880a0aa878/FLAG748aeb1c9 [2022-07-12 06:47:19,646 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:47:19,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c [2022-07-12 06:47:19,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f24896250/9d8744916e9544dba880b9880a0aa878/FLAG748aeb1c9 [2022-07-12 06:47:20,039 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f24896250/9d8744916e9544dba880b9880a0aa878 [2022-07-12 06:47:20,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:47:20,043 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:47:20,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:47:20,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:47:20,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:47:20,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:47:20" (1/1) ... [2022-07-12 06:47:20,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ccd455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:47:20, skipping insertion in model container [2022-07-12 06:47:20,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:47:20" (1/1) ... [2022-07-12 06:47:20,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:47:20,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:47:20,264 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c[14373,14386] [2022-07-12 06:47:20,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:47:20,272 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:47:20,336 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c[14373,14386] [2022-07-12 06:47:20,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:47:20,359 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:47:20,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:47:20 WrapperNode [2022-07-12 06:47:20,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:47:20,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:47:20,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:47:20,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:47:20,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:47:20" (1/1) ... [2022-07-12 06:47:20,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:47:20" (1/1) ... [2022-07-12 06:47:20,403 INFO L137 Inliner]: procedures = 22, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 479 [2022-07-12 06:47:20,404 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:47:20,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:47:20,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:47:20,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:47:20,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:47:20" (1/1) ... [2022-07-12 06:47:20,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:47:20" (1/1) ... [2022-07-12 06:47:20,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:47:20" (1/1) ... [2022-07-12 06:47:20,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:47:20" (1/1) ... [2022-07-12 06:47:20,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:47:20" (1/1) ... [2022-07-12 06:47:20,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:47:20" (1/1) ... [2022-07-12 06:47:20,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:47:20" (1/1) ... [2022-07-12 06:47:20,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:47:20,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:47:20,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:47:20,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:47:20,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:47:20" (1/1) ... [2022-07-12 06:47:20,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:47:20,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:47:20,489 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) [2022-07-12 06:47:20,496 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 [2022-07-12 06:47:20,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:47:20,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:47:20,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:47:20,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:47:20,602 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:47:20,604 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:47:20,993 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:47:20,999 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:47:20,999 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 06:47:21,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:47:21 BoogieIcfgContainer [2022-07-12 06:47:21,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:47:21,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:47:21,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:47:21,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:47:21,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:47:20" (1/3) ... [2022-07-12 06:47:21,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@670c04f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:47:21, skipping insertion in model container [2022-07-12 06:47:21,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:47:20" (2/3) ... [2022-07-12 06:47:21,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@670c04f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:47:21, skipping insertion in model container [2022-07-12 06:47:21,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:47:21" (3/3) ... [2022-07-12 06:47:21,010 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c [2022-07-12 06:47:21,022 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:47:21,023 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 06:47:21,057 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:47:21,063 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@26a5f623, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@52651225 [2022-07-12 06:47:21,063 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 06:47:21,067 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 141 states have (on average 1.7588652482269505) internal successors, (248), 142 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:21,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-12 06:47:21,075 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:47:21,075 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] [2022-07-12 06:47:21,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:47:21,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:47:21,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1418405445, now seen corresponding path program 1 times [2022-07-12 06:47:21,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:47:21,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119609677] [2022-07-12 06:47:21,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:47:21,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:47:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:47:21,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:47:21,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:47:21,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119609677] [2022-07-12 06:47:21,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119609677] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:47:21,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:47:21,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 06:47:21,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266113285] [2022-07-12 06:47:21,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:47:21,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 06:47:21,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:47:21,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 06:47:21,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 06:47:21,334 INFO L87 Difference]: Start difference. First operand has 143 states, 141 states have (on average 1.7588652482269505) internal successors, (248), 142 states have internal predecessors, (248), 0 states have call successors, (0), 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 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:21,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:47:21,371 INFO L93 Difference]: Finished difference Result 227 states and 388 transitions. [2022-07-12 06:47:21,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 06:47:21,373 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-07-12 06:47:21,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:47:21,383 INFO L225 Difference]: With dead ends: 227 [2022-07-12 06:47:21,383 INFO L226 Difference]: Without dead ends: 139 [2022-07-12 06:47:21,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 06:47:21,392 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:47:21,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:47:21,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-07-12 06:47:21,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-07-12 06:47:21,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.7463768115942029) internal successors, (241), 138 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:21,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 241 transitions. [2022-07-12 06:47:21,437 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 241 transitions. Word has length 37 [2022-07-12 06:47:21,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:47:21,438 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 241 transitions. [2022-07-12 06:47:21,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:21,439 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 241 transitions. [2022-07-12 06:47:21,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-12 06:47:21,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:47:21,443 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] [2022-07-12 06:47:21,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 06:47:21,444 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:47:21,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:47:21,445 INFO L85 PathProgramCache]: Analyzing trace with hash 2058913401, now seen corresponding path program 1 times [2022-07-12 06:47:21,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:47:21,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272454169] [2022-07-12 06:47:21,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:47:21,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:47:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:47:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:47:21,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:47:21,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272454169] [2022-07-12 06:47:21,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272454169] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:47:21,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:47:21,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:47:21,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23965927] [2022-07-12 06:47:21,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:47:21,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:47:21,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:47:21,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:47:21,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:47:21,577 INFO L87 Difference]: Start difference. First operand 139 states and 241 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:21,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:47:21,667 INFO L93 Difference]: Finished difference Result 222 states and 378 transitions. [2022-07-12 06:47:21,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:47:21,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-07-12 06:47:21,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:47:21,668 INFO L225 Difference]: With dead ends: 222 [2022-07-12 06:47:21,671 INFO L226 Difference]: Without dead ends: 139 [2022-07-12 06:47:21,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:47:21,673 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 3 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:47:21,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 923 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:47:21,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-07-12 06:47:21,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-07-12 06:47:21,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.5289855072463767) internal successors, (211), 138 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:21,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 211 transitions. [2022-07-12 06:47:21,684 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 211 transitions. Word has length 37 [2022-07-12 06:47:21,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:47:21,685 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 211 transitions. [2022-07-12 06:47:21,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:21,685 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 211 transitions. [2022-07-12 06:47:21,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 06:47:21,686 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:47:21,686 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] [2022-07-12 06:47:21,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 06:47:21,687 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:47:21,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:47:21,687 INFO L85 PathProgramCache]: Analyzing trace with hash -415118785, now seen corresponding path program 1 times [2022-07-12 06:47:21,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:47:21,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851250281] [2022-07-12 06:47:21,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:47:21,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:47:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:47:21,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:47:21,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:47:21,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851250281] [2022-07-12 06:47:21,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851250281] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:47:21,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:47:21,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:47:21,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220590443] [2022-07-12 06:47:21,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:47:21,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:47:21,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:47:21,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:47:21,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:47:21,784 INFO L87 Difference]: Start difference. First operand 139 states and 211 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:21,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:47:21,820 INFO L93 Difference]: Finished difference Result 279 states and 445 transitions. [2022-07-12 06:47:21,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:47:21,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-12 06:47:21,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:47:21,821 INFO L225 Difference]: With dead ends: 279 [2022-07-12 06:47:21,822 INFO L226 Difference]: Without dead ends: 200 [2022-07-12 06:47:21,822 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 [2022-07-12 06:47:21,823 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 107 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:47:21,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 360 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:47:21,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-07-12 06:47:21,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2022-07-12 06:47:21,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.5532994923857868) internal successors, (306), 197 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:21,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 306 transitions. [2022-07-12 06:47:21,832 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 306 transitions. Word has length 66 [2022-07-12 06:47:21,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:47:21,833 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 306 transitions. [2022-07-12 06:47:21,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:21,834 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 306 transitions. [2022-07-12 06:47:21,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 06:47:21,841 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:47:21,841 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] [2022-07-12 06:47:21,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 06:47:21,842 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:47:21,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:47:21,842 INFO L85 PathProgramCache]: Analyzing trace with hash 928134868, now seen corresponding path program 1 times [2022-07-12 06:47:21,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:47:21,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994944907] [2022-07-12 06:47:21,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:47:21,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:47:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:47:21,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:47:21,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:47:21,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994944907] [2022-07-12 06:47:21,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994944907] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:47:21,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:47:21,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:47:21,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016586500] [2022-07-12 06:47:21,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:47:21,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:47:21,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:47:21,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:47:21,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:47:21,887 INFO L87 Difference]: Start difference. First operand 198 states and 306 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:21,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:47:21,901 INFO L93 Difference]: Finished difference Result 458 states and 734 transitions. [2022-07-12 06:47:21,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:47:21,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-07-12 06:47:21,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:47:21,905 INFO L225 Difference]: With dead ends: 458 [2022-07-12 06:47:21,906 INFO L226 Difference]: Without dead ends: 320 [2022-07-12 06:47:21,908 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 [2022-07-12 06:47:21,910 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 109 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:47:21,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 386 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:47:21,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-07-12 06:47:21,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 318. [2022-07-12 06:47:21,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 1.586750788643533) internal successors, (503), 317 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:21,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 503 transitions. [2022-07-12 06:47:21,928 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 503 transitions. Word has length 68 [2022-07-12 06:47:21,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:47:21,928 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 503 transitions. [2022-07-12 06:47:21,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:21,928 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 503 transitions. [2022-07-12 06:47:21,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-12 06:47:21,929 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:47:21,929 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] [2022-07-12 06:47:21,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 06:47:21,929 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:47:21,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:47:21,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1295175881, now seen corresponding path program 1 times [2022-07-12 06:47:21,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:47:21,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336827321] [2022-07-12 06:47:21,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:47:21,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:47:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:47:21,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:47:21,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:47:21,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336827321] [2022-07-12 06:47:21,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336827321] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:47:21,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:47:21,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:47:21,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678270236] [2022-07-12 06:47:21,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:47:21,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:47:21,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:47:21,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:47:21,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:47:21,997 INFO L87 Difference]: Start difference. First operand 318 states and 503 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:22,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:47:22,029 INFO L93 Difference]: Finished difference Result 802 states and 1297 transitions. [2022-07-12 06:47:22,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:47:22,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-07-12 06:47:22,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:47:22,032 INFO L225 Difference]: With dead ends: 802 [2022-07-12 06:47:22,032 INFO L226 Difference]: Without dead ends: 544 [2022-07-12 06:47:22,032 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 [2022-07-12 06:47:22,033 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 103 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:47:22,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 387 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:47:22,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2022-07-12 06:47:22,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 542. [2022-07-12 06:47:22,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 1.6025878003696858) internal successors, (867), 541 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:22,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 867 transitions. [2022-07-12 06:47:22,045 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 867 transitions. Word has length 70 [2022-07-12 06:47:22,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:47:22,045 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 867 transitions. [2022-07-12 06:47:22,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:22,046 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 867 transitions. [2022-07-12 06:47:22,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-12 06:47:22,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:47:22,046 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] [2022-07-12 06:47:22,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 06:47:22,047 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:47:22,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:47:22,047 INFO L85 PathProgramCache]: Analyzing trace with hash -367652834, now seen corresponding path program 1 times [2022-07-12 06:47:22,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:47:22,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212300057] [2022-07-12 06:47:22,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:47:22,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:47:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:47:22,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:47:22,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:47:22,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212300057] [2022-07-12 06:47:22,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212300057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:47:22,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:47:22,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:47:22,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840045051] [2022-07-12 06:47:22,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:47:22,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:47:22,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:47:22,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:47:22,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:47:22,104 INFO L87 Difference]: Start difference. First operand 542 states and 867 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:22,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:47:22,239 INFO L93 Difference]: Finished difference Result 2730 states and 4469 transitions. [2022-07-12 06:47:22,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:47:22,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-07-12 06:47:22,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:47:22,248 INFO L225 Difference]: With dead ends: 2730 [2022-07-12 06:47:22,248 INFO L226 Difference]: Without dead ends: 2248 [2022-07-12 06:47:22,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:47:22,251 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 778 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:47:22,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 1306 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:47:22,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2022-07-12 06:47:22,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 1006. [2022-07-12 06:47:22,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 1005 states have (on average 1.6149253731343283) internal successors, (1623), 1005 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1623 transitions. [2022-07-12 06:47:22,286 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1623 transitions. Word has length 72 [2022-07-12 06:47:22,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:47:22,288 INFO L495 AbstractCegarLoop]: Abstraction has 1006 states and 1623 transitions. [2022-07-12 06:47:22,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:22,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1623 transitions. [2022-07-12 06:47:22,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-12 06:47:22,289 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:47:22,290 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] [2022-07-12 06:47:22,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 06:47:22,290 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:47:22,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:47:22,291 INFO L85 PathProgramCache]: Analyzing trace with hash -435168554, now seen corresponding path program 1 times [2022-07-12 06:47:22,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:47:22,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673550978] [2022-07-12 06:47:22,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:47:22,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:47:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:47:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:47:22,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:47:22,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673550978] [2022-07-12 06:47:22,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673550978] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:47:22,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:47:22,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:47:22,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724423499] [2022-07-12 06:47:22,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:47:22,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:47:22,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:47:22,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:47:22,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:47:22,368 INFO L87 Difference]: Start difference. First operand 1006 states and 1623 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:22,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:47:22,453 INFO L93 Difference]: Finished difference Result 3644 states and 5934 transitions. [2022-07-12 06:47:22,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:47:22,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-07-12 06:47:22,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:47:22,460 INFO L225 Difference]: With dead ends: 3644 [2022-07-12 06:47:22,461 INFO L226 Difference]: Without dead ends: 2698 [2022-07-12 06:47:22,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:47:22,464 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 385 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:47:22,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 689 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:47:22,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2022-07-12 06:47:22,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 1843. [2022-07-12 06:47:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1842 states have (on average 1.6161780673181325) internal successors, (2977), 1842 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:22,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2977 transitions. [2022-07-12 06:47:22,514 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2977 transitions. Word has length 73 [2022-07-12 06:47:22,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:47:22,514 INFO L495 AbstractCegarLoop]: Abstraction has 1843 states and 2977 transitions. [2022-07-12 06:47:22,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:22,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2977 transitions. [2022-07-12 06:47:22,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-12 06:47:22,516 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:47:22,516 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] [2022-07-12 06:47:22,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 06:47:22,517 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:47:22,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:47:22,517 INFO L85 PathProgramCache]: Analyzing trace with hash 152415701, now seen corresponding path program 1 times [2022-07-12 06:47:22,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:47:22,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751639234] [2022-07-12 06:47:22,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:47:22,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:47:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:47:22,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:47:22,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:47:22,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751639234] [2022-07-12 06:47:22,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751639234] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:47:22,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:47:22,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:47:22,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655962913] [2022-07-12 06:47:22,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:47:22,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:47:22,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:47:22,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:47:22,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:47:22,571 INFO L87 Difference]: Start difference. First operand 1843 states and 2977 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:22,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:47:22,633 INFO L93 Difference]: Finished difference Result 3597 states and 5826 transitions. [2022-07-12 06:47:22,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:47:22,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-07-12 06:47:22,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:47:22,640 INFO L225 Difference]: With dead ends: 3597 [2022-07-12 06:47:22,641 INFO L226 Difference]: Without dead ends: 2591 [2022-07-12 06:47:22,642 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 [2022-07-12 06:47:22,643 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 110 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:47:22,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 456 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:47:22,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2022-07-12 06:47:22,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2589. [2022-07-12 06:47:22,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2589 states, 2588 states have (on average 1.6058732612055642) internal successors, (4156), 2588 states have internal predecessors, (4156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:22,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 4156 transitions. [2022-07-12 06:47:22,711 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 4156 transitions. Word has length 74 [2022-07-12 06:47:22,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:47:22,711 INFO L495 AbstractCegarLoop]: Abstraction has 2589 states and 4156 transitions. [2022-07-12 06:47:22,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:22,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 4156 transitions. [2022-07-12 06:47:22,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-12 06:47:22,712 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:47:22,712 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] [2022-07-12 06:47:22,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 06:47:22,713 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:47:22,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:47:22,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1935815765, now seen corresponding path program 1 times [2022-07-12 06:47:22,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:47:22,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205800276] [2022-07-12 06:47:22,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:47:22,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:47:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:47:22,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:47:22,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:47:22,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205800276] [2022-07-12 06:47:22,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205800276] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:47:22,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:47:22,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:47:22,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269676905] [2022-07-12 06:47:22,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:47:22,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:47:22,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:47:22,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:47:22,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:47:22,748 INFO L87 Difference]: Start difference. First operand 2589 states and 4156 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:22,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:47:22,925 INFO L93 Difference]: Finished difference Result 8144 states and 13137 transitions. [2022-07-12 06:47:22,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:47:22,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-07-12 06:47:22,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:47:22,943 INFO L225 Difference]: With dead ends: 8144 [2022-07-12 06:47:22,943 INFO L226 Difference]: Without dead ends: 5645 [2022-07-12 06:47:22,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:47:22,949 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 384 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:47:22,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 686 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:47:22,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5645 states. [2022-07-12 06:47:23,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5645 to 4101. [2022-07-12 06:47:23,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4101 states, 4100 states have (on average 1.5995121951219513) internal successors, (6558), 4100 states have internal predecessors, (6558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:23,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 6558 transitions. [2022-07-12 06:47:23,109 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 6558 transitions. Word has length 74 [2022-07-12 06:47:23,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:47:23,110 INFO L495 AbstractCegarLoop]: Abstraction has 4101 states and 6558 transitions. [2022-07-12 06:47:23,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:23,110 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 6558 transitions. [2022-07-12 06:47:23,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-12 06:47:23,111 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:47:23,111 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] [2022-07-12 06:47:23,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 06:47:23,112 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:47:23,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:47:23,112 INFO L85 PathProgramCache]: Analyzing trace with hash -2130170379, now seen corresponding path program 1 times [2022-07-12 06:47:23,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:47:23,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456254250] [2022-07-12 06:47:23,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:47:23,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:47:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:47:23,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:47:23,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:47:23,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456254250] [2022-07-12 06:47:23,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456254250] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:47:23,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:47:23,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:47:23,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277853701] [2022-07-12 06:47:23,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:47:23,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:47:23,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:47:23,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:47:23,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:47:23,144 INFO L87 Difference]: Start difference. First operand 4101 states and 6558 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:23,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:47:23,326 INFO L93 Difference]: Finished difference Result 8053 states and 12892 transitions. [2022-07-12 06:47:23,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:47:23,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-07-12 06:47:23,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:47:23,343 INFO L225 Difference]: With dead ends: 8053 [2022-07-12 06:47:23,343 INFO L226 Difference]: Without dead ends: 5741 [2022-07-12 06:47:23,346 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 [2022-07-12 06:47:23,347 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 104 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:47:23,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 439 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:47:23,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5741 states. [2022-07-12 06:47:23,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5741 to 5739. [2022-07-12 06:47:23,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5739 states, 5738 states have (on average 1.585569884977344) internal successors, (9098), 5738 states have internal predecessors, (9098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:23,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5739 states to 5739 states and 9098 transitions. [2022-07-12 06:47:23,568 INFO L78 Accepts]: Start accepts. Automaton has 5739 states and 9098 transitions. Word has length 74 [2022-07-12 06:47:23,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:47:23,569 INFO L495 AbstractCegarLoop]: Abstraction has 5739 states and 9098 transitions. [2022-07-12 06:47:23,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:23,569 INFO L276 IsEmpty]: Start isEmpty. Operand 5739 states and 9098 transitions. [2022-07-12 06:47:23,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-12 06:47:23,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:47:23,570 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] [2022-07-12 06:47:23,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 06:47:23,571 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:47:23,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:47:23,571 INFO L85 PathProgramCache]: Analyzing trace with hash 339461557, now seen corresponding path program 1 times [2022-07-12 06:47:23,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:47:23,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694245164] [2022-07-12 06:47:23,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:47:23,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:47:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:47:23,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:47:23,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:47:23,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694245164] [2022-07-12 06:47:23,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694245164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:47:23,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:47:23,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:47:23,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000617710] [2022-07-12 06:47:23,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:47:23,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:47:23,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:47:23,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:47:23,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:47:23,609 INFO L87 Difference]: Start difference. First operand 5739 states and 9098 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:23,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:47:23,850 INFO L93 Difference]: Finished difference Result 13696 states and 21823 transitions. [2022-07-12 06:47:23,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:47:23,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-07-12 06:47:23,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:47:23,889 INFO L225 Difference]: With dead ends: 13696 [2022-07-12 06:47:23,889 INFO L226 Difference]: Without dead ends: 8043 [2022-07-12 06:47:23,894 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 [2022-07-12 06:47:23,895 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 116 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:47:23,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 479 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:47:23,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8043 states. [2022-07-12 06:47:24,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8043 to 8041. [2022-07-12 06:47:24,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8041 states, 8040 states have (on average 1.5899253731343284) internal successors, (12783), 8040 states have internal predecessors, (12783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:24,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8041 states to 8041 states and 12783 transitions. [2022-07-12 06:47:24,160 INFO L78 Accepts]: Start accepts. Automaton has 8041 states and 12783 transitions. Word has length 74 [2022-07-12 06:47:24,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:47:24,160 INFO L495 AbstractCegarLoop]: Abstraction has 8041 states and 12783 transitions. [2022-07-12 06:47:24,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:24,160 INFO L276 IsEmpty]: Start isEmpty. Operand 8041 states and 12783 transitions. [2022-07-12 06:47:24,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-12 06:47:24,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:47:24,162 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] [2022-07-12 06:47:24,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 06:47:24,162 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:47:24,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:47:24,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1704077331, now seen corresponding path program 1 times [2022-07-12 06:47:24,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:47:24,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536730157] [2022-07-12 06:47:24,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:47:24,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:47:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:47:24,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:47:24,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:47:24,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536730157] [2022-07-12 06:47:24,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536730157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:47:24,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:47:24,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:47:24,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319376749] [2022-07-12 06:47:24,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:47:24,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:47:24,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:47:24,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:47:24,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:47:24,204 INFO L87 Difference]: Start difference. First operand 8041 states and 12783 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:24,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:47:24,650 INFO L93 Difference]: Finished difference Result 25448 states and 40536 transitions. [2022-07-12 06:47:24,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:47:24,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-07-12 06:47:24,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:47:24,684 INFO L225 Difference]: With dead ends: 25448 [2022-07-12 06:47:24,684 INFO L226 Difference]: Without dead ends: 17493 [2022-07-12 06:47:24,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:47:24,696 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 382 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:47:24,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 688 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:47:24,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17493 states. [2022-07-12 06:47:25,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17493 to 12714. [2022-07-12 06:47:25,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12714 states, 12713 states have (on average 1.5786989695587195) internal successors, (20070), 12713 states have internal predecessors, (20070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:25,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12714 states to 12714 states and 20070 transitions. [2022-07-12 06:47:25,174 INFO L78 Accepts]: Start accepts. Automaton has 12714 states and 20070 transitions. Word has length 75 [2022-07-12 06:47:25,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:47:25,174 INFO L495 AbstractCegarLoop]: Abstraction has 12714 states and 20070 transitions. [2022-07-12 06:47:25,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:25,174 INFO L276 IsEmpty]: Start isEmpty. Operand 12714 states and 20070 transitions. [2022-07-12 06:47:25,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-12 06:47:25,175 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:47:25,175 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] [2022-07-12 06:47:25,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 06:47:25,175 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:47:25,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:47:25,176 INFO L85 PathProgramCache]: Analyzing trace with hash 931672261, now seen corresponding path program 1 times [2022-07-12 06:47:25,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:47:25,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971720929] [2022-07-12 06:47:25,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:47:25,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:47:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:47:25,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:47:25,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:47:25,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971720929] [2022-07-12 06:47:25,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971720929] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:47:25,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:47:25,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:47:25,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043412016] [2022-07-12 06:47:25,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:47:25,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:47:25,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:47:25,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:47:25,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:47:25,279 INFO L87 Difference]: Start difference. First operand 12714 states and 20070 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:25,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:47:25,697 INFO L93 Difference]: Finished difference Result 25344 states and 40025 transitions. [2022-07-12 06:47:25,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:47:25,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-07-12 06:47:25,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:47:25,723 INFO L225 Difference]: With dead ends: 25344 [2022-07-12 06:47:25,723 INFO L226 Difference]: Without dead ends: 12716 [2022-07-12 06:47:25,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:47:25,732 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 180 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:47:25,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 740 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:47:25,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12716 states. [2022-07-12 06:47:26,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12716 to 12714. [2022-07-12 06:47:26,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12714 states, 12713 states have (on average 1.5669000235978918) internal successors, (19920), 12713 states have internal predecessors, (19920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:26,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12714 states to 12714 states and 19920 transitions. [2022-07-12 06:47:26,181 INFO L78 Accepts]: Start accepts. Automaton has 12714 states and 19920 transitions. Word has length 77 [2022-07-12 06:47:26,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:47:26,182 INFO L495 AbstractCegarLoop]: Abstraction has 12714 states and 19920 transitions. [2022-07-12 06:47:26,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:26,182 INFO L276 IsEmpty]: Start isEmpty. Operand 12714 states and 19920 transitions. [2022-07-12 06:47:26,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-12 06:47:26,183 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:47:26,183 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] [2022-07-12 06:47:26,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 06:47:26,183 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:47:26,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:47:26,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1222308264, now seen corresponding path program 1 times [2022-07-12 06:47:26,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:47:26,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063735705] [2022-07-12 06:47:26,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:47:26,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:47:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:47:26,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:47:26,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:47:26,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063735705] [2022-07-12 06:47:26,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063735705] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:47:26,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:47:26,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:47:26,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322020899] [2022-07-12 06:47:26,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:47:26,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:47:26,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:47:26,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:47:26,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:47:26,290 INFO L87 Difference]: Start difference. First operand 12714 states and 19920 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:26,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:47:26,961 INFO L93 Difference]: Finished difference Result 36669 states and 57597 transitions. [2022-07-12 06:47:26,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:47:26,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-07-12 06:47:26,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:47:27,007 INFO L225 Difference]: With dead ends: 36669 [2022-07-12 06:47:27,008 INFO L226 Difference]: Without dead ends: 24041 [2022-07-12 06:47:27,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:47:27,025 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 178 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:47:27,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 750 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:47:27,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24041 states. [2022-07-12 06:47:27,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24041 to 24039. [2022-07-12 06:47:27,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24039 states, 24038 states have (on average 1.5549546551293785) internal successors, (37378), 24038 states have internal predecessors, (37378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:27,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24039 states to 24039 states and 37378 transitions. [2022-07-12 06:47:27,848 INFO L78 Accepts]: Start accepts. Automaton has 24039 states and 37378 transitions. Word has length 80 [2022-07-12 06:47:27,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:47:27,848 INFO L495 AbstractCegarLoop]: Abstraction has 24039 states and 37378 transitions. [2022-07-12 06:47:27,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:27,849 INFO L276 IsEmpty]: Start isEmpty. Operand 24039 states and 37378 transitions. [2022-07-12 06:47:27,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-12 06:47:27,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:47:27,849 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] [2022-07-12 06:47:27,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 06:47:27,850 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:47:27,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:47:27,850 INFO L85 PathProgramCache]: Analyzing trace with hash 334573870, now seen corresponding path program 1 times [2022-07-12 06:47:27,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:47:27,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944284189] [2022-07-12 06:47:27,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:47:27,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:47:27,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:47:27,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:47:27,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:47:27,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944284189] [2022-07-12 06:47:27,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944284189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:47:27,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:47:27,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:47:27,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384512821] [2022-07-12 06:47:27,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:47:27,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:47:27,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:47:27,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:47:27,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:47:27,914 INFO L87 Difference]: Start difference. First operand 24039 states and 37378 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:29,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:47:29,231 INFO L93 Difference]: Finished difference Result 48880 states and 75264 transitions. [2022-07-12 06:47:29,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:47:29,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-07-12 06:47:29,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:47:29,314 INFO L225 Difference]: With dead ends: 48880 [2022-07-12 06:47:29,314 INFO L226 Difference]: Without dead ends: 48878 [2022-07-12 06:47:29,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:47:29,330 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 341 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:47:29,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 911 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:47:29,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48878 states. [2022-07-12 06:47:30,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48878 to 25200. [2022-07-12 06:47:30,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25200 states, 25199 states have (on average 1.5290289297194333) internal successors, (38530), 25199 states have internal predecessors, (38530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:30,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25200 states to 25200 states and 38530 transitions. [2022-07-12 06:47:30,481 INFO L78 Accepts]: Start accepts. Automaton has 25200 states and 38530 transitions. Word has length 81 [2022-07-12 06:47:30,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:47:30,481 INFO L495 AbstractCegarLoop]: Abstraction has 25200 states and 38530 transitions. [2022-07-12 06:47:30,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:30,482 INFO L276 IsEmpty]: Start isEmpty. Operand 25200 states and 38530 transitions. [2022-07-12 06:47:30,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-12 06:47:30,487 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:47:30,487 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:47:30,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 06:47:30,488 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:47:30,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:47:30,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1678408875, now seen corresponding path program 1 times [2022-07-12 06:47:30,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:47:30,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155764669] [2022-07-12 06:47:30,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:47:30,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:47:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:47:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 06:47:30,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:47:30,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155764669] [2022-07-12 06:47:30,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155764669] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:47:30,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:47:30,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:47:30,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626736259] [2022-07-12 06:47:30,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:47:30,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:47:30,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:47:30,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:47:30,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:47:30,541 INFO L87 Difference]: Start difference. First operand 25200 states and 38530 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) [2022-07-12 06:47:32,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:47:32,203 INFO L93 Difference]: Finished difference Result 62864 states and 96289 transitions. [2022-07-12 06:47:32,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:47:32,204 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 107 [2022-07-12 06:47:32,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:47:32,289 INFO L225 Difference]: With dead ends: 62864 [2022-07-12 06:47:32,290 INFO L226 Difference]: Without dead ends: 51262 [2022-07-12 06:47:32,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:47:32,317 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 488 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:47:32,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 907 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:47:32,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51262 states. [2022-07-12 06:47:33,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51262 to 39536. [2022-07-12 06:47:33,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39536 states, 39535 states have (on average 1.5252055141014291) internal successors, (60299), 39535 states have internal predecessors, (60299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:33,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39536 states to 39536 states and 60299 transitions. [2022-07-12 06:47:33,987 INFO L78 Accepts]: Start accepts. Automaton has 39536 states and 60299 transitions. Word has length 107 [2022-07-12 06:47:33,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:47:33,987 INFO L495 AbstractCegarLoop]: Abstraction has 39536 states and 60299 transitions. [2022-07-12 06:47:33,988 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) [2022-07-12 06:47:33,988 INFO L276 IsEmpty]: Start isEmpty. Operand 39536 states and 60299 transitions. [2022-07-12 06:47:33,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-12 06:47:33,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:47:33,990 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:47:33,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 06:47:33,990 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:47:33,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:47:33,991 INFO L85 PathProgramCache]: Analyzing trace with hash 333972341, now seen corresponding path program 1 times [2022-07-12 06:47:33,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:47:33,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229697142] [2022-07-12 06:47:33,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:47:33,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:47:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:47:34,029 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-12 06:47:34,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:47:34,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229697142] [2022-07-12 06:47:34,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229697142] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:47:34,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:47:34,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:47:34,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035104933] [2022-07-12 06:47:34,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:47:34,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:47:34,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:47:34,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:47:34,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:47:34,031 INFO L87 Difference]: Start difference. First operand 39536 states and 60299 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 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) [2022-07-12 06:47:36,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:47:36,151 INFO L93 Difference]: Finished difference Result 67504 states and 103409 transitions. [2022-07-12 06:47:36,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:47:36,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 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 107 [2022-07-12 06:47:36,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:47:36,229 INFO L225 Difference]: With dead ends: 67504 [2022-07-12 06:47:36,229 INFO L226 Difference]: Without dead ends: 55902 [2022-07-12 06:47:36,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:47:36,246 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 496 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:47:36,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 896 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:47:36,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55902 states. [2022-07-12 06:47:38,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55902 to 53568. [2022-07-12 06:47:38,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53568 states, 53567 states have (on average 1.5255101088356637) internal successors, (81717), 53567 states have internal predecessors, (81717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:38,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53568 states to 53568 states and 81717 transitions. [2022-07-12 06:47:38,356 INFO L78 Accepts]: Start accepts. Automaton has 53568 states and 81717 transitions. Word has length 107 [2022-07-12 06:47:38,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:47:38,357 INFO L495 AbstractCegarLoop]: Abstraction has 53568 states and 81717 transitions. [2022-07-12 06:47:38,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 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) [2022-07-12 06:47:38,357 INFO L276 IsEmpty]: Start isEmpty. Operand 53568 states and 81717 transitions. [2022-07-12 06:47:38,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-12 06:47:38,359 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:47:38,359 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:47:38,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 06:47:38,360 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:47:38,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:47:38,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1491363019, now seen corresponding path program 1 times [2022-07-12 06:47:38,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:47:38,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94812015] [2022-07-12 06:47:38,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:47:38,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:47:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:47:38,408 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 06:47:38,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:47:38,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94812015] [2022-07-12 06:47:38,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94812015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:47:38,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:47:38,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:47:38,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765929558] [2022-07-12 06:47:38,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:47:38,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:47:38,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:47:38,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:47:38,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:47:38,410 INFO L87 Difference]: Start difference. First operand 53568 states and 81717 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 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) [2022-07-12 06:47:40,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:47:40,707 INFO L93 Difference]: Finished difference Result 79766 states and 122224 transitions. [2022-07-12 06:47:40,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:47:40,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 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 107 [2022-07-12 06:47:40,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:47:40,800 INFO L225 Difference]: With dead ends: 79766 [2022-07-12 06:47:40,800 INFO L226 Difference]: Without dead ends: 65214 [2022-07-12 06:47:40,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:47:40,822 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 485 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:47:40,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 986 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:47:40,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65214 states. [2022-07-12 06:47:43,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65214 to 62880. [2022-07-12 06:47:43,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62880 states, 62879 states have (on average 1.5269803909095245) internal successors, (96015), 62879 states have internal predecessors, (96015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:43,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62880 states to 62880 states and 96015 transitions. [2022-07-12 06:47:43,492 INFO L78 Accepts]: Start accepts. Automaton has 62880 states and 96015 transitions. Word has length 107 [2022-07-12 06:47:43,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:47:43,493 INFO L495 AbstractCegarLoop]: Abstraction has 62880 states and 96015 transitions. [2022-07-12 06:47:43,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 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) [2022-07-12 06:47:43,493 INFO L276 IsEmpty]: Start isEmpty. Operand 62880 states and 96015 transitions. [2022-07-12 06:47:43,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-12 06:47:43,495 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:47:43,495 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:47:43,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 06:47:43,495 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:47:43,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:47:43,496 INFO L85 PathProgramCache]: Analyzing trace with hash -910445921, now seen corresponding path program 1 times [2022-07-12 06:47:43,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:47:43,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072644396] [2022-07-12 06:47:43,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:47:43,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:47:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:47:43,541 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 06:47:43,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:47:43,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072644396] [2022-07-12 06:47:43,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072644396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:47:43,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:47:43,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:47:43,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053737898] [2022-07-12 06:47:43,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:47:43,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:47:43,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:47:43,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:47:43,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:47:43,543 INFO L87 Difference]: Start difference. First operand 62880 states and 96015 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) [2022-07-12 06:47:46,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:47:46,512 INFO L93 Difference]: Finished difference Result 108119 states and 165673 transitions. [2022-07-12 06:47:46,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:47:46,512 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 108 [2022-07-12 06:47:46,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:47:46,639 INFO L225 Difference]: With dead ends: 108119 [2022-07-12 06:47:46,639 INFO L226 Difference]: Without dead ends: 84255 [2022-07-12 06:47:46,668 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 [2022-07-12 06:47:46,668 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 212 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:47:46,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 648 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:47:46,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84255 states. [2022-07-12 06:47:50,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84255 to 81923. [2022-07-12 06:47:50,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81923 states, 81922 states have (on average 1.524950562730402) internal successors, (124927), 81922 states have internal predecessors, (124927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:47:50,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81923 states to 81923 states and 124927 transitions. [2022-07-12 06:47:50,281 INFO L78 Accepts]: Start accepts. Automaton has 81923 states and 124927 transitions. Word has length 108 [2022-07-12 06:47:50,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:47:50,281 INFO L495 AbstractCegarLoop]: Abstraction has 81923 states and 124927 transitions. [2022-07-12 06:47:50,281 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) [2022-07-12 06:47:50,281 INFO L276 IsEmpty]: Start isEmpty. Operand 81923 states and 124927 transitions. [2022-07-12 06:47:50,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-12 06:47:50,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:47:50,283 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:47:50,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 06:47:50,284 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:47:50,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:47:50,284 INFO L85 PathProgramCache]: Analyzing trace with hash -487744095, now seen corresponding path program 1 times [2022-07-12 06:47:50,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:47:50,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12608080] [2022-07-12 06:47:50,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:47:50,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:47:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:47:50,314 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 06:47:50,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:47:50,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12608080] [2022-07-12 06:47:50,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12608080] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:47:50,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:47:50,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:47:50,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758103207] [2022-07-12 06:47:50,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:47:50,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:47:50,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:47:50,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:47:50,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:47:50,316 INFO L87 Difference]: Start difference. First operand 81923 states and 124927 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 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)