./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem15_label56.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem15_label56.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc --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 a498fb7710a33a2d85f447c670841227251b50491988d49c611ac72650abaae2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:00:11,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:00:11,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:00:11,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:00:11,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:00:11,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:00:11,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:00:11,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:00:11,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:00:11,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:00:11,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:00:11,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:00:11,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:00:11,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:00:11,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:00:11,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:00:11,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:00:11,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:00:11,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:00:11,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:00:11,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:00:11,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:00:11,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:00:11,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:00:11,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:00:11,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:00:11,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:00:11,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:00:11,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:00:11,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:00:11,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:00:11,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:00:11,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:00:11,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:00:11,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:00:11,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:00:11,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:00:11,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:00:11,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:00:11,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:00:11,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:00:11,947 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:00:11,970 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:00:11,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:00:11,971 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:00:11,971 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:00:11,972 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:00:11,972 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:00:11,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:00:11,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:00:11,973 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:00:11,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:00:11,974 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:00:11,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:00:11,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:00:11,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:00:11,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:00:11,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:00:11,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:00:11,975 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:00:11,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:00:11,976 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:00:11,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:00:11,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:00:11,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:00:11,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:00:11,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:00:11,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:00:11,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:00:11,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:00:11,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:00:11,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:00:11,978 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:00:11,978 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:00:11,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:00:11,979 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a498fb7710a33a2d85f447c670841227251b50491988d49c611ac72650abaae2 [2022-11-02 21:00:12,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:00:12,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:00:12,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:00:12,279 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:00:12,280 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:00:12,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/eca-rers2012/Problem15_label56.c [2022-11-02 21:00:12,340 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/data/cd3fffd9c/d9393ebeb8cc4450bac959e00444fe9f/FLAGf77160214 [2022-11-02 21:00:12,997 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:00:12,998 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/sv-benchmarks/c/eca-rers2012/Problem15_label56.c [2022-11-02 21:00:13,020 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/data/cd3fffd9c/d9393ebeb8cc4450bac959e00444fe9f/FLAGf77160214 [2022-11-02 21:00:13,190 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/data/cd3fffd9c/d9393ebeb8cc4450bac959e00444fe9f [2022-11-02 21:00:13,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:00:13,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:00:13,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:00:13,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:00:13,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:00:13,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:00:13" (1/1) ... [2022-11-02 21:00:13,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2de57d8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:13, skipping insertion in model container [2022-11-02 21:00:13,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:00:13" (1/1) ... [2022-11-02 21:00:13,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:00:13,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:00:13,619 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/sv-benchmarks/c/eca-rers2012/Problem15_label56.c[4182,4195] [2022-11-02 21:00:14,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:00:14,164 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:00:14,197 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/sv-benchmarks/c/eca-rers2012/Problem15_label56.c[4182,4195] [2022-11-02 21:00:14,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:00:14,522 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:00:14,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:14 WrapperNode [2022-11-02 21:00:14,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:00:14,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:00:14,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:00:14,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:00:14,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:14" (1/1) ... [2022-11-02 21:00:14,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:14" (1/1) ... [2022-11-02 21:00:14,819 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1758 [2022-11-02 21:00:14,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:00:14,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:00:14,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:00:14,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:00:14,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:14" (1/1) ... [2022-11-02 21:00:14,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:14" (1/1) ... [2022-11-02 21:00:14,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:14" (1/1) ... [2022-11-02 21:00:14,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:14" (1/1) ... [2022-11-02 21:00:15,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:14" (1/1) ... [2022-11-02 21:00:15,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:14" (1/1) ... [2022-11-02 21:00:15,050 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:14" (1/1) ... [2022-11-02 21:00:15,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:14" (1/1) ... [2022-11-02 21:00:15,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:00:15,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:00:15,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:00:15,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:00:15,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:14" (1/1) ... [2022-11-02 21:00:15,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:00:15,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:15,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:00:15,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:00:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:00:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:00:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:00:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:00:15,250 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:00:15,252 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:00:18,876 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:00:18,888 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:00:18,888 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:00:18,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:00:18 BoogieIcfgContainer [2022-11-02 21:00:18,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:00:18,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:00:18,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:00:18,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:00:18,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:00:13" (1/3) ... [2022-11-02 21:00:18,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@591b46c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:00:18, skipping insertion in model container [2022-11-02 21:00:18,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:14" (2/3) ... [2022-11-02 21:00:18,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@591b46c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:00:18, skipping insertion in model container [2022-11-02 21:00:18,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:00:18" (3/3) ... [2022-11-02 21:00:18,901 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label56.c [2022-11-02 21:00:18,920 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:00:18,920 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:00:18,977 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:00:18,985 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@450b5cc5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:00:18,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:00:18,991 INFO L276 IsEmpty]: Start isEmpty. Operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:18,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-02 21:00:18,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:19,000 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] [2022-11-02 21:00:19,000 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:19,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:19,006 INFO L85 PathProgramCache]: Analyzing trace with hash 2113343065, now seen corresponding path program 1 times [2022-11-02 21:00:19,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:19,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566669609] [2022-11-02 21:00:19,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:19,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:19,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:19,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:19,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566669609] [2022-11-02 21:00:19,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566669609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:19,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:19,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:00:19,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723241403] [2022-11-02 21:00:19,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:19,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:19,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:19,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:19,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:19,367 INFO L87 Difference]: Start difference. First operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:22,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:22,750 INFO L93 Difference]: Finished difference Result 1154 states and 2106 transitions. [2022-11-02 21:00:22,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:22,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2022-11-02 21:00:22,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:22,769 INFO L225 Difference]: With dead ends: 1154 [2022-11-02 21:00:22,769 INFO L226 Difference]: Without dead ends: 665 [2022-11-02 21:00:22,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:22,777 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 288 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:22,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 383 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-02 21:00:22,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-11-02 21:00:22,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 663. [2022-11-02 21:00:22,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 662 states have (on average 1.4818731117824773) internal successors, (981), 662 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:22,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 981 transitions. [2022-11-02 21:00:22,859 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 981 transitions. Word has length 33 [2022-11-02 21:00:22,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:22,860 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 981 transitions. [2022-11-02 21:00:22,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:22,861 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 981 transitions. [2022-11-02 21:00:22,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:00:22,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:22,868 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:22,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:00:22,869 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:22,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:22,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1976974785, now seen corresponding path program 1 times [2022-11-02 21:00:22,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:22,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076358254] [2022-11-02 21:00:22,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:22,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:23,408 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:23,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:23,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076358254] [2022-11-02 21:00:23,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076358254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:23,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:23,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:00:23,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643551874] [2022-11-02 21:00:23,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:23,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:23,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:23,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:23,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:23,412 INFO L87 Difference]: Start difference. First operand 663 states and 981 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:25,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:25,843 INFO L93 Difference]: Finished difference Result 1624 states and 2315 transitions. [2022-11-02 21:00:25,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:25,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:00:25,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:25,847 INFO L225 Difference]: With dead ends: 1624 [2022-11-02 21:00:25,848 INFO L226 Difference]: Without dead ends: 963 [2022-11-02 21:00:25,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:25,851 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 237 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:25,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 337 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-02 21:00:25,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-11-02 21:00:25,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2022-11-02 21:00:25,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.362785862785863) internal successors, (1311), 962 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:25,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1311 transitions. [2022-11-02 21:00:25,886 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1311 transitions. Word has length 98 [2022-11-02 21:00:25,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:25,886 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1311 transitions. [2022-11-02 21:00:25,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:25,887 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1311 transitions. [2022-11-02 21:00:25,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-02 21:00:25,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:25,889 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:25,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:00:25,889 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:25,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:25,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1824647890, now seen corresponding path program 1 times [2022-11-02 21:00:25,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:25,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437255856] [2022-11-02 21:00:25,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:25,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:26,154 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:26,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:26,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437255856] [2022-11-02 21:00:26,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437255856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:26,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:26,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:26,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641579790] [2022-11-02 21:00:26,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:26,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:26,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:26,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:26,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:26,158 INFO L87 Difference]: Start difference. First operand 963 states and 1311 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:28,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:28,914 INFO L93 Difference]: Finished difference Result 2244 states and 3201 transitions. [2022-11-02 21:00:28,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:00:28,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-11-02 21:00:28,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:28,921 INFO L225 Difference]: With dead ends: 2244 [2022-11-02 21:00:28,921 INFO L226 Difference]: Without dead ends: 1582 [2022-11-02 21:00:28,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:28,932 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 362 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 1663 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 2146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 1663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:28,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 365 Invalid, 2146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 1663 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-02 21:00:28,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2022-11-02 21:00:28,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1266. [2022-11-02 21:00:28,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 1265 states have (on average 1.3043478260869565) internal successors, (1650), 1265 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:28,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1650 transitions. [2022-11-02 21:00:28,968 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1650 transitions. Word has length 103 [2022-11-02 21:00:28,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:28,970 INFO L495 AbstractCegarLoop]: Abstraction has 1266 states and 1650 transitions. [2022-11-02 21:00:28,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:28,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1650 transitions. [2022-11-02 21:00:28,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-02 21:00:28,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:28,985 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:28,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:00:28,986 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:28,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:28,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1763852906, now seen corresponding path program 1 times [2022-11-02 21:00:28,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:28,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031828495] [2022-11-02 21:00:28,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:28,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:29,356 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:29,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:29,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031828495] [2022-11-02 21:00:29,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031828495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:29,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:29,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:00:29,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178279528] [2022-11-02 21:00:29,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:29,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:29,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:29,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:29,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:29,362 INFO L87 Difference]: Start difference. First operand 1266 states and 1650 transitions. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:34,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:34,221 INFO L93 Difference]: Finished difference Result 4670 states and 6170 transitions. [2022-11-02 21:00:34,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:00:34,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 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 199 [2022-11-02 21:00:34,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:34,235 INFO L225 Difference]: With dead ends: 4670 [2022-11-02 21:00:34,235 INFO L226 Difference]: Without dead ends: 3406 [2022-11-02 21:00:34,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:34,239 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 490 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1955 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 2239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:34,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 348 Invalid, 2239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1955 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-02 21:00:34,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3406 states. [2022-11-02 21:00:34,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3406 to 3381. [2022-11-02 21:00:34,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3381 states, 3380 states have (on average 1.2366863905325445) internal successors, (4180), 3380 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:34,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3381 states to 3381 states and 4180 transitions. [2022-11-02 21:00:34,328 INFO L78 Accepts]: Start accepts. Automaton has 3381 states and 4180 transitions. Word has length 199 [2022-11-02 21:00:34,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:34,329 INFO L495 AbstractCegarLoop]: Abstraction has 3381 states and 4180 transitions. [2022-11-02 21:00:34,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:34,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3381 states and 4180 transitions. [2022-11-02 21:00:34,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-11-02 21:00:34,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:34,334 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:34,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:00:34,335 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:34,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:34,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1964504972, now seen corresponding path program 1 times [2022-11-02 21:00:34,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:34,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44550509] [2022-11-02 21:00:34,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:34,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:34,551 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-02 21:00:34,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:34,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44550509] [2022-11-02 21:00:34,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44550509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:34,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:34,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:00:34,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5896689] [2022-11-02 21:00:34,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:34,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:34,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:34,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:34,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:34,554 INFO L87 Difference]: Start difference. First operand 3381 states and 4180 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:36,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:36,530 INFO L93 Difference]: Finished difference Result 8563 states and 10754 transitions. [2022-11-02 21:00:36,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:36,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 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 203 [2022-11-02 21:00:36,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:36,547 INFO L225 Difference]: With dead ends: 8563 [2022-11-02 21:00:36,548 INFO L226 Difference]: Without dead ends: 5483 [2022-11-02 21:00:36,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:36,552 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 257 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:36,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 339 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-02 21:00:36,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5483 states. [2022-11-02 21:00:36,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5483 to 5478. [2022-11-02 21:00:36,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5478 states, 5477 states have (on average 1.16870549570933) internal successors, (6401), 5477 states have internal predecessors, (6401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:36,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5478 states to 5478 states and 6401 transitions. [2022-11-02 21:00:36,661 INFO L78 Accepts]: Start accepts. Automaton has 5478 states and 6401 transitions. Word has length 203 [2022-11-02 21:00:36,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:36,662 INFO L495 AbstractCegarLoop]: Abstraction has 5478 states and 6401 transitions. [2022-11-02 21:00:36,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:36,663 INFO L276 IsEmpty]: Start isEmpty. Operand 5478 states and 6401 transitions. [2022-11-02 21:00:36,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-02 21:00:36,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:36,669 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:36,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:00:36,669 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:36,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:36,670 INFO L85 PathProgramCache]: Analyzing trace with hash 360964428, now seen corresponding path program 1 times [2022-11-02 21:00:36,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:36,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113413595] [2022-11-02 21:00:36,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:36,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:37,403 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 21:00:37,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:37,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113413595] [2022-11-02 21:00:37,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113413595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:37,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:37,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:00:37,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933191711] [2022-11-02 21:00:37,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:37,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:37,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:37,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:37,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:37,407 INFO L87 Difference]: Start difference. First operand 5478 states and 6401 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:39,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:39,502 INFO L93 Difference]: Finished difference Result 10655 states and 12489 transitions. [2022-11-02 21:00:39,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:39,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 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 305 [2022-11-02 21:00:39,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:39,518 INFO L225 Difference]: With dead ends: 10655 [2022-11-02 21:00:39,519 INFO L226 Difference]: Without dead ends: 5478 [2022-11-02 21:00:39,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:39,525 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 105 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:39,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 359 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-02 21:00:39,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5478 states. [2022-11-02 21:00:39,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5478 to 5478. [2022-11-02 21:00:39,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5478 states, 5477 states have (on average 1.1676100054774512) internal successors, (6395), 5477 states have internal predecessors, (6395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:39,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5478 states to 5478 states and 6395 transitions. [2022-11-02 21:00:39,680 INFO L78 Accepts]: Start accepts. Automaton has 5478 states and 6395 transitions. Word has length 305 [2022-11-02 21:00:39,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:39,681 INFO L495 AbstractCegarLoop]: Abstraction has 5478 states and 6395 transitions. [2022-11-02 21:00:39,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:39,681 INFO L276 IsEmpty]: Start isEmpty. Operand 5478 states and 6395 transitions. [2022-11-02 21:00:39,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-02 21:00:39,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:39,687 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:39,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:00:39,688 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:39,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:39,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1031709635, now seen corresponding path program 1 times [2022-11-02 21:00:39,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:39,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447241400] [2022-11-02 21:00:39,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:39,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:39,989 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-02 21:00:39,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:39,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447241400] [2022-11-02 21:00:39,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447241400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:39,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:39,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:00:39,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547324395] [2022-11-02 21:00:39,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:39,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:39,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:39,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:39,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:39,992 INFO L87 Difference]: Start difference. First operand 5478 states and 6395 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:42,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:42,325 INFO L93 Difference]: Finished difference Result 11851 states and 14151 transitions. [2022-11-02 21:00:42,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:42,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 320 [2022-11-02 21:00:42,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:42,338 INFO L225 Difference]: With dead ends: 11851 [2022-11-02 21:00:42,339 INFO L226 Difference]: Without dead ends: 6674 [2022-11-02 21:00:42,344 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 [2022-11-02 21:00:42,344 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 282 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:42,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 322 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 21:00:42,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6674 states. [2022-11-02 21:00:42,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6674 to 4876. [2022-11-02 21:00:42,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4876 states, 4875 states have (on average 1.1805128205128206) internal successors, (5755), 4875 states have internal predecessors, (5755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:42,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4876 states to 4876 states and 5755 transitions. [2022-11-02 21:00:42,451 INFO L78 Accepts]: Start accepts. Automaton has 4876 states and 5755 transitions. Word has length 320 [2022-11-02 21:00:42,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:42,452 INFO L495 AbstractCegarLoop]: Abstraction has 4876 states and 5755 transitions. [2022-11-02 21:00:42,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:42,452 INFO L276 IsEmpty]: Start isEmpty. Operand 4876 states and 5755 transitions. [2022-11-02 21:00:42,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2022-11-02 21:00:42,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:42,459 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:42,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:00:42,460 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:42,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:42,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1931775866, now seen corresponding path program 1 times [2022-11-02 21:00:42,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:42,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748054591] [2022-11-02 21:00:42,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:42,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,922 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-02 21:00:42,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:42,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748054591] [2022-11-02 21:00:42,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748054591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:42,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:42,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:00:42,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853546601] [2022-11-02 21:00:42,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:42,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:42,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:42,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:42,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:42,925 INFO L87 Difference]: Start difference. First operand 4876 states and 5755 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:45,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:45,155 INFO L93 Difference]: Finished difference Result 11852 states and 14244 transitions. [2022-11-02 21:00:45,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:45,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 379 [2022-11-02 21:00:45,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:45,208 INFO L225 Difference]: With dead ends: 11852 [2022-11-02 21:00:45,208 INFO L226 Difference]: Without dead ends: 7277 [2022-11-02 21:00:45,213 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 [2022-11-02 21:00:45,216 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 295 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:45,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 637 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 21:00:45,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7277 states. [2022-11-02 21:00:45,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7277 to 6380. [2022-11-02 21:00:45,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6380 states, 6379 states have (on average 1.1558237968333596) internal successors, (7373), 6379 states have internal predecessors, (7373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:45,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6380 states to 6380 states and 7373 transitions. [2022-11-02 21:00:45,378 INFO L78 Accepts]: Start accepts. Automaton has 6380 states and 7373 transitions. Word has length 379 [2022-11-02 21:00:45,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:45,379 INFO L495 AbstractCegarLoop]: Abstraction has 6380 states and 7373 transitions. [2022-11-02 21:00:45,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:45,380 INFO L276 IsEmpty]: Start isEmpty. Operand 6380 states and 7373 transitions. [2022-11-02 21:00:45,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-11-02 21:00:45,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:45,388 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:45,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:00:45,392 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:45,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:45,392 INFO L85 PathProgramCache]: Analyzing trace with hash 851490982, now seen corresponding path program 1 times [2022-11-02 21:00:45,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:45,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315265794] [2022-11-02 21:00:45,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:45,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:45,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:45,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315265794] [2022-11-02 21:00:45,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315265794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:45,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:45,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:00:45,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636897407] [2022-11-02 21:00:45,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:45,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:45,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:45,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:45,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:45,778 INFO L87 Difference]: Start difference. First operand 6380 states and 7373 transitions. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:48,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:48,039 INFO L93 Difference]: Finished difference Result 14563 states and 17152 transitions. [2022-11-02 21:00:48,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:48,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 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 385 [2022-11-02 21:00:48,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:48,056 INFO L225 Difference]: With dead ends: 14563 [2022-11-02 21:00:48,056 INFO L226 Difference]: Without dead ends: 8484 [2022-11-02 21:00:48,062 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 [2022-11-02 21:00:48,063 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 248 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:48,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 603 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 21:00:48,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8484 states. [2022-11-02 21:00:48,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8484 to 7584. [2022-11-02 21:00:48,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7584 states, 7583 states have (on average 1.1425557167348015) internal successors, (8664), 7583 states have internal predecessors, (8664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:48,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7584 states to 7584 states and 8664 transitions. [2022-11-02 21:00:48,265 INFO L78 Accepts]: Start accepts. Automaton has 7584 states and 8664 transitions. Word has length 385 [2022-11-02 21:00:48,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:48,266 INFO L495 AbstractCegarLoop]: Abstraction has 7584 states and 8664 transitions. [2022-11-02 21:00:48,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:48,266 INFO L276 IsEmpty]: Start isEmpty. Operand 7584 states and 8664 transitions. [2022-11-02 21:00:48,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2022-11-02 21:00:48,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:48,274 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:48,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:00:48,275 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:48,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:48,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1354942547, now seen corresponding path program 1 times [2022-11-02 21:00:48,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:48,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413750116] [2022-11-02 21:00:48,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:48,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:48,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:48,644 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-02 21:00:48,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:48,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413750116] [2022-11-02 21:00:48,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413750116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:48,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:48,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:00:48,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582174708] [2022-11-02 21:00:48,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:48,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:48,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:48,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:48,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:48,652 INFO L87 Difference]: Start difference. First operand 7584 states and 8664 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:50,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:50,722 INFO L93 Difference]: Finished difference Result 16661 states and 19398 transitions. [2022-11-02 21:00:50,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:50,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 402 [2022-11-02 21:00:50,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:50,739 INFO L225 Difference]: With dead ends: 16661 [2022-11-02 21:00:50,740 INFO L226 Difference]: Without dead ends: 9378 [2022-11-02 21:00:50,744 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 [2022-11-02 21:00:50,745 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 246 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:50,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 619 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-02 21:00:50,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9378 states. [2022-11-02 21:00:50,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9378 to 9075. [2022-11-02 21:00:50,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9075 states, 9074 states have (on average 1.1320255675556534) internal successors, (10272), 9074 states have internal predecessors, (10272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:50,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9075 states to 9075 states and 10272 transitions. [2022-11-02 21:00:50,884 INFO L78 Accepts]: Start accepts. Automaton has 9075 states and 10272 transitions. Word has length 402 [2022-11-02 21:00:50,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:50,885 INFO L495 AbstractCegarLoop]: Abstraction has 9075 states and 10272 transitions. [2022-11-02 21:00:50,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:50,886 INFO L276 IsEmpty]: Start isEmpty. Operand 9075 states and 10272 transitions. [2022-11-02 21:00:50,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2022-11-02 21:00:50,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:50,899 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:50,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:00:50,899 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:50,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:50,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1150058578, now seen corresponding path program 1 times [2022-11-02 21:00:50,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:50,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106744502] [2022-11-02 21:00:50,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:50,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:51,791 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 471 proven. 39 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-02 21:00:51,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:51,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106744502] [2022-11-02 21:00:51,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106744502] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:51,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142686870] [2022-11-02 21:00:51,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:51,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:51,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:51,800 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:51,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:00:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:52,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:00:52,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:52,254 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2022-11-02 21:00:52,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:52,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142686870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:52,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:00:52,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-02 21:00:52,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693227438] [2022-11-02 21:00:52,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:52,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:52,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:52,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:52,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:52,270 INFO L87 Difference]: Start difference. First operand 9075 states and 10272 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:54,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:54,578 INFO L93 Difference]: Finished difference Result 20240 states and 23193 transitions. [2022-11-02 21:00:54,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:54,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 517 [2022-11-02 21:00:54,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:54,599 INFO L225 Difference]: With dead ends: 20240 [2022-11-02 21:00:54,600 INFO L226 Difference]: Without dead ends: 11466 [2022-11-02 21:00:54,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:54,608 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 384 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:54,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 447 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-02 21:00:54,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11466 states. [2022-11-02 21:00:54,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11466 to 11466. [2022-11-02 21:00:54,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11466 states, 11465 states have (on average 1.136676842564326) internal successors, (13032), 11465 states have internal predecessors, (13032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:54,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11466 states to 11466 states and 13032 transitions. [2022-11-02 21:00:54,823 INFO L78 Accepts]: Start accepts. Automaton has 11466 states and 13032 transitions. Word has length 517 [2022-11-02 21:00:54,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:54,824 INFO L495 AbstractCegarLoop]: Abstraction has 11466 states and 13032 transitions. [2022-11-02 21:00:54,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:54,824 INFO L276 IsEmpty]: Start isEmpty. Operand 11466 states and 13032 transitions. [2022-11-02 21:00:54,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2022-11-02 21:00:54,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:54,838 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:54,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 21:00:55,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:55,060 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:55,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:55,061 INFO L85 PathProgramCache]: Analyzing trace with hash 162599516, now seen corresponding path program 1 times [2022-11-02 21:00:55,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:55,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879115656] [2022-11-02 21:00:55,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:55,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:55,676 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 359 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-11-02 21:00:55,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:55,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879115656] [2022-11-02 21:00:55,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879115656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:55,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:55,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:00:55,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671843720] [2022-11-02 21:00:55,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:55,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:55,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:55,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:55,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:55,679 INFO L87 Difference]: Start difference. First operand 11466 states and 13032 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:58,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:58,245 INFO L93 Difference]: Finished difference Result 27130 states and 31140 transitions. [2022-11-02 21:00:58,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:58,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 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 521 [2022-11-02 21:00:58,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:58,270 INFO L225 Difference]: With dead ends: 27130 [2022-11-02 21:00:58,271 INFO L226 Difference]: Without dead ends: 15965 [2022-11-02 21:00:58,280 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 [2022-11-02 21:00:58,280 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 246 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:58,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 621 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-02 21:00:58,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15965 states. [2022-11-02 21:00:58,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15965 to 15356. [2022-11-02 21:00:58,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15356 states, 15355 states have (on average 1.1286225985021165) internal successors, (17330), 15355 states have internal predecessors, (17330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:58,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15356 states to 15356 states and 17330 transitions. [2022-11-02 21:00:58,502 INFO L78 Accepts]: Start accepts. Automaton has 15356 states and 17330 transitions. Word has length 521 [2022-11-02 21:00:58,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:58,503 INFO L495 AbstractCegarLoop]: Abstraction has 15356 states and 17330 transitions. [2022-11-02 21:00:58,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:58,504 INFO L276 IsEmpty]: Start isEmpty. Operand 15356 states and 17330 transitions. [2022-11-02 21:00:58,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2022-11-02 21:00:58,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:58,514 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:58,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 21:00:58,514 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:58,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:58,515 INFO L85 PathProgramCache]: Analyzing trace with hash -2016614800, now seen corresponding path program 1 times [2022-11-02 21:00:58,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:58,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168005825] [2022-11-02 21:00:58,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:58,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:59,386 INFO L134 CoverageAnalysis]: Checked inductivity of 989 backedges. 628 proven. 39 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2022-11-02 21:00:59,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:59,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168005825] [2022-11-02 21:00:59,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168005825] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:59,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829201279] [2022-11-02 21:00:59,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:59,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:59,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:59,389 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:59,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:00:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:59,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:00:59,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:59,812 INFO L134 CoverageAnalysis]: Checked inductivity of 989 backedges. 465 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2022-11-02 21:00:59,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:59,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829201279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:59,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:00:59,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-02 21:00:59,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168934905] [2022-11-02 21:00:59,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:59,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:59,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:59,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:59,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:59,815 INFO L87 Difference]: Start difference. First operand 15356 states and 17330 transitions. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:02,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:02,004 INFO L93 Difference]: Finished difference Result 30108 states and 34018 transitions. [2022-11-02 21:01:02,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:01:02,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 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 596 [2022-11-02 21:01:02,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:02,029 INFO L225 Difference]: With dead ends: 30108 [2022-11-02 21:01:02,029 INFO L226 Difference]: Without dead ends: 15053 [2022-11-02 21:01:02,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 595 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:02,041 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 252 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:02,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 604 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 21:01:02,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15053 states. [2022-11-02 21:01:02,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15053 to 15052. [2022-11-02 21:01:02,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15052 states, 15051 states have (on average 1.0795295993621685) internal successors, (16248), 15051 states have internal predecessors, (16248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:02,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15052 states to 15052 states and 16248 transitions. [2022-11-02 21:01:02,265 INFO L78 Accepts]: Start accepts. Automaton has 15052 states and 16248 transitions. Word has length 596 [2022-11-02 21:01:02,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:02,266 INFO L495 AbstractCegarLoop]: Abstraction has 15052 states and 16248 transitions. [2022-11-02 21:01:02,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:02,266 INFO L276 IsEmpty]: Start isEmpty. Operand 15052 states and 16248 transitions. [2022-11-02 21:01:02,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2022-11-02 21:01:02,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:02,277 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:02,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:02,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:02,492 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:02,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:02,493 INFO L85 PathProgramCache]: Analyzing trace with hash 765627537, now seen corresponding path program 1 times [2022-11-02 21:01:02,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:02,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110902492] [2022-11-02 21:01:02,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:02,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,414 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 555 proven. 39 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-02 21:01:03,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:03,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110902492] [2022-11-02 21:01:03,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110902492] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:01:03,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646878872] [2022-11-02 21:01:03,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:03,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:03,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:03,418 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:03,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:01:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:01:03,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:04,609 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 555 proven. 39 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-02 21:01:04,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:05,563 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 555 proven. 39 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-02 21:01:05,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646878872] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:05,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:01:05,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-11-02 21:01:05,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70714757] [2022-11-02 21:01:05,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:05,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:01:05,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:05,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:01:05,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:01:05,569 INFO L87 Difference]: Start difference. First operand 15052 states and 16248 transitions. Second operand has 9 states, 9 states have (on average 86.33333333333333) internal successors, (777), 8 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:13,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:13,021 INFO L93 Difference]: Finished difference Result 38434 states and 41454 transitions. [2022-11-02 21:01:13,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:13,022 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 86.33333333333333) internal successors, (777), 8 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 597 [2022-11-02 21:01:13,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:13,043 INFO L225 Difference]: With dead ends: 38434 [2022-11-02 21:01:13,043 INFO L226 Difference]: Without dead ends: 16546 [2022-11-02 21:01:13,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1203 GetRequests, 1188 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:01:13,052 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 3279 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 5004 mSolverCounterSat, 772 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3279 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 5776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 772 IncrementalHoareTripleChecker+Valid, 5004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:13,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3279 Valid, 199 Invalid, 5776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [772 Valid, 5004 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-02 21:01:13,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16546 states. [2022-11-02 21:01:13,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16546 to 12357. [2022-11-02 21:01:13,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12357 states, 12356 states have (on average 1.0386047264486888) internal successors, (12833), 12356 states have internal predecessors, (12833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:13,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12357 states to 12357 states and 12833 transitions. [2022-11-02 21:01:13,238 INFO L78 Accepts]: Start accepts. Automaton has 12357 states and 12833 transitions. Word has length 597 [2022-11-02 21:01:13,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:13,238 INFO L495 AbstractCegarLoop]: Abstraction has 12357 states and 12833 transitions. [2022-11-02 21:01:13,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 86.33333333333333) internal successors, (777), 8 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:13,239 INFO L276 IsEmpty]: Start isEmpty. Operand 12357 states and 12833 transitions. [2022-11-02 21:01:13,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2022-11-02 21:01:13,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:13,248 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:13,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:13,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:13,464 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:13,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:13,465 INFO L85 PathProgramCache]: Analyzing trace with hash -2010556868, now seen corresponding path program 1 times [2022-11-02 21:01:13,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:13,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031479118] [2022-11-02 21:01:13,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:13,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:13,968 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2022-11-02 21:01:13,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:13,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031479118] [2022-11-02 21:01:13,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031479118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:13,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:13,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:01:13,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089473614] [2022-11-02 21:01:13,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:13,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:01:13,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:13,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:01:13,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:01:13,971 INFO L87 Difference]: Start difference. First operand 12357 states and 12833 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 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) [2022-11-02 21:01:15,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:15,368 INFO L93 Difference]: Finished difference Result 28295 states and 29436 transitions. [2022-11-02 21:01:15,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:01:15,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 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) Word has length 634 [2022-11-02 21:01:15,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:15,388 INFO L225 Difference]: With dead ends: 28295 [2022-11-02 21:01:15,388 INFO L226 Difference]: Without dead ends: 15940 [2022-11-02 21:01:15,397 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 [2022-11-02 21:01:15,398 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 281 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:15,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 536 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 21:01:15,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15940 states. [2022-11-02 21:01:15,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15940 to 15043. [2022-11-02 21:01:15,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15043 states, 15042 states have (on average 1.032974338518814) internal successors, (15538), 15042 states have internal predecessors, (15538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:15,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15043 states to 15043 states and 15538 transitions. [2022-11-02 21:01:15,605 INFO L78 Accepts]: Start accepts. Automaton has 15043 states and 15538 transitions. Word has length 634 [2022-11-02 21:01:15,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:15,606 INFO L495 AbstractCegarLoop]: Abstraction has 15043 states and 15538 transitions. [2022-11-02 21:01:15,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 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) [2022-11-02 21:01:15,606 INFO L276 IsEmpty]: Start isEmpty. Operand 15043 states and 15538 transitions. [2022-11-02 21:01:15,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2022-11-02 21:01:15,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:15,616 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:15,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 21:01:15,617 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:15,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:15,618 INFO L85 PathProgramCache]: Analyzing trace with hash -229933604, now seen corresponding path program 1 times [2022-11-02 21:01:15,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:15,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018273832] [2022-11-02 21:01:15,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:15,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:16,232 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2022-11-02 21:01:16,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:16,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018273832] [2022-11-02 21:01:16,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018273832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:16,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:16,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:16,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491651476] [2022-11-02 21:01:16,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:16,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:01:16,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:16,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:01:16,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:16,237 INFO L87 Difference]: Start difference. First operand 15043 states and 15538 transitions. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:18,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:18,351 INFO L93 Difference]: Finished difference Result 33973 states and 35169 transitions. [2022-11-02 21:01:18,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:01:18,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 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 658 [2022-11-02 21:01:18,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:18,366 INFO L225 Difference]: With dead ends: 33973 [2022-11-02 21:01:18,366 INFO L226 Difference]: Without dead ends: 18932 [2022-11-02 21:01:18,375 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 [2022-11-02 21:01:18,376 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 699 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:18,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 426 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1434 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-02 21:01:18,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18932 states. [2022-11-02 21:01:18,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18932 to 18035. [2022-11-02 21:01:18,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18035 states, 18034 states have (on average 1.0311633581013642) internal successors, (18596), 18034 states have internal predecessors, (18596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:18,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18035 states to 18035 states and 18596 transitions. [2022-11-02 21:01:18,616 INFO L78 Accepts]: Start accepts. Automaton has 18035 states and 18596 transitions. Word has length 658 [2022-11-02 21:01:18,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:18,616 INFO L495 AbstractCegarLoop]: Abstraction has 18035 states and 18596 transitions. [2022-11-02 21:01:18,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:18,617 INFO L276 IsEmpty]: Start isEmpty. Operand 18035 states and 18596 transitions. [2022-11-02 21:01:18,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2022-11-02 21:01:18,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:18,630 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:18,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 21:01:18,630 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:18,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:18,631 INFO L85 PathProgramCache]: Analyzing trace with hash -998147796, now seen corresponding path program 1 times [2022-11-02 21:01:18,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:18,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302777274] [2022-11-02 21:01:18,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:18,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 475 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2022-11-02 21:01:19,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:19,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302777274] [2022-11-02 21:01:19,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302777274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:19,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:19,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:01:19,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089075626] [2022-11-02 21:01:19,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:19,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:01:19,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:19,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:01:19,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:01:19,167 INFO L87 Difference]: Start difference. First operand 18035 states and 18596 transitions. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:20,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:20,439 INFO L93 Difference]: Finished difference Result 36065 states and 37196 transitions. [2022-11-02 21:01:20,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:01:20,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 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 689 [2022-11-02 21:01:20,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:20,456 INFO L225 Difference]: With dead ends: 36065 [2022-11-02 21:01:20,456 INFO L226 Difference]: Without dead ends: 18331 [2022-11-02 21:01:20,463 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 [2022-11-02 21:01:20,464 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 435 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:20,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 67 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 21:01:20,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18331 states. [2022-11-02 21:01:20,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18331 to 18031. [2022-11-02 21:01:20,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18031 states, 18030 states have (on average 1.031003882418192) internal successors, (18589), 18030 states have internal predecessors, (18589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:20,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18031 states to 18031 states and 18589 transitions. [2022-11-02 21:01:20,663 INFO L78 Accepts]: Start accepts. Automaton has 18031 states and 18589 transitions. Word has length 689 [2022-11-02 21:01:20,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:20,663 INFO L495 AbstractCegarLoop]: Abstraction has 18031 states and 18589 transitions. [2022-11-02 21:01:20,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:20,664 INFO L276 IsEmpty]: Start isEmpty. Operand 18031 states and 18589 transitions. [2022-11-02 21:01:20,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2022-11-02 21:01:20,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:20,686 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:20,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 21:01:20,687 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:20,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:20,687 INFO L85 PathProgramCache]: Analyzing trace with hash 860860691, now seen corresponding path program 1 times [2022-11-02 21:01:20,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:20,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623889839] [2022-11-02 21:01:20,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:20,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:21,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1182 backedges. 608 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2022-11-02 21:01:21,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:21,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623889839] [2022-11-02 21:01:21,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623889839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:21,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:21,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:01:21,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066222599] [2022-11-02 21:01:21,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:21,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:01:21,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:21,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:01:21,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:01:21,306 INFO L87 Difference]: Start difference. First operand 18031 states and 18589 transitions. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:22,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:22,761 INFO L93 Difference]: Finished difference Result 38449 states and 39675 transitions. [2022-11-02 21:01:22,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:01:22,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 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 760 [2022-11-02 21:01:22,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:22,777 INFO L225 Difference]: With dead ends: 38449 [2022-11-02 21:01:22,777 INFO L226 Difference]: Without dead ends: 20719 [2022-11-02 21:01:22,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:01:22,784 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 184 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:22,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 161 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 21:01:22,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20719 states. [2022-11-02 21:01:22,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20719 to 19523. [2022-11-02 21:01:22,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19523 states, 19522 states have (on average 1.0284806884540518) internal successors, (20078), 19522 states have internal predecessors, (20078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:22,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19523 states to 19523 states and 20078 transitions. [2022-11-02 21:01:22,976 INFO L78 Accepts]: Start accepts. Automaton has 19523 states and 20078 transitions. Word has length 760 [2022-11-02 21:01:22,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:22,977 INFO L495 AbstractCegarLoop]: Abstraction has 19523 states and 20078 transitions. [2022-11-02 21:01:22,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:22,978 INFO L276 IsEmpty]: Start isEmpty. Operand 19523 states and 20078 transitions. [2022-11-02 21:01:22,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 782 [2022-11-02 21:01:22,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:22,995 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:22,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 21:01:22,995 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:22,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:22,996 INFO L85 PathProgramCache]: Analyzing trace with hash -107876282, now seen corresponding path program 1 times [2022-11-02 21:01:22,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:22,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138156288] [2022-11-02 21:01:22,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:22,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 629 proven. 0 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2022-11-02 21:01:23,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:23,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138156288] [2022-11-02 21:01:23,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138156288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:23,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:23,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:01:23,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958994644] [2022-11-02 21:01:23,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:23,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:01:23,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:23,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:01:23,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:01:23,495 INFO L87 Difference]: Start difference. First operand 19523 states and 20078 transitions. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:24,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:24,810 INFO L93 Difference]: Finished difference Result 41433 states and 42655 transitions. [2022-11-02 21:01:24,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:01:24,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 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 781 [2022-11-02 21:01:24,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:24,831 INFO L225 Difference]: With dead ends: 41433 [2022-11-02 21:01:24,831 INFO L226 Difference]: Without dead ends: 21912 [2022-11-02 21:01:24,840 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 [2022-11-02 21:01:24,840 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 163 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:24,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 460 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 21:01:24,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21912 states. [2022-11-02 21:01:25,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21912 to 17124. [2022-11-02 21:01:25,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17124 states, 17123 states have (on average 1.0263972434736903) internal successors, (17575), 17123 states have internal predecessors, (17575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:25,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17124 states to 17124 states and 17575 transitions. [2022-11-02 21:01:25,072 INFO L78 Accepts]: Start accepts. Automaton has 17124 states and 17575 transitions. Word has length 781 [2022-11-02 21:01:25,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:25,073 INFO L495 AbstractCegarLoop]: Abstraction has 17124 states and 17575 transitions. [2022-11-02 21:01:25,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:25,073 INFO L276 IsEmpty]: Start isEmpty. Operand 17124 states and 17575 transitions. [2022-11-02 21:01:25,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2022-11-02 21:01:25,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:25,084 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:25,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 21:01:25,085 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:25,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:25,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1462646468, now seen corresponding path program 1 times [2022-11-02 21:01:25,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:25,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461856667] [2022-11-02 21:01:25,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:25,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:25,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2022-11-02 21:01:25,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:25,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461856667] [2022-11-02 21:01:25,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461856667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:25,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:25,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:01:25,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508030750] [2022-11-02 21:01:25,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:25,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:01:25,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:25,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:01:25,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:01:25,537 INFO L87 Difference]: Start difference. First operand 17124 states and 17575 transitions. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:26,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:26,885 INFO L93 Difference]: Finished difference Result 36039 states and 37016 transitions. [2022-11-02 21:01:26,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:01:26,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 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 818 [2022-11-02 21:01:26,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:26,903 INFO L225 Difference]: With dead ends: 36039 [2022-11-02 21:01:26,903 INFO L226 Difference]: Without dead ends: 19216 [2022-11-02 21:01:26,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:01:26,911 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 310 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:26,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 504 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 21:01:26,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19216 states. [2022-11-02 21:01:27,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19216 to 18020. [2022-11-02 21:01:27,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18020 states, 18019 states have (on average 1.0254176147399967) internal successors, (18477), 18019 states have internal predecessors, (18477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:27,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18020 states to 18020 states and 18477 transitions. [2022-11-02 21:01:27,088 INFO L78 Accepts]: Start accepts. Automaton has 18020 states and 18477 transitions. Word has length 818 [2022-11-02 21:01:27,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:27,088 INFO L495 AbstractCegarLoop]: Abstraction has 18020 states and 18477 transitions. [2022-11-02 21:01:27,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:27,088 INFO L276 IsEmpty]: Start isEmpty. Operand 18020 states and 18477 transitions. [2022-11-02 21:01:27,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2022-11-02 21:01:27,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:27,100 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:27,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 21:01:27,100 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:27,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:27,101 INFO L85 PathProgramCache]: Analyzing trace with hash 154899430, now seen corresponding path program 1 times [2022-11-02 21:01:27,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:27,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943244682] [2022-11-02 21:01:27,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:27,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1018 backedges. 581 proven. 269 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-02 21:01:28,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:28,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943244682] [2022-11-02 21:01:28,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943244682] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:01:28,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918015423] [2022-11-02 21:01:28,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:28,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:28,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:28,961 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:28,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:01:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:29,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:01:29,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:29,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1018 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2022-11-02 21:01:29,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:29,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918015423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:29,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:01:29,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-02 21:01:29,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387707056] [2022-11-02 21:01:29,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:29,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:01:29,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:29,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:01:29,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:29,453 INFO L87 Difference]: Start difference. First operand 18020 states and 18477 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:30,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:30,956 INFO L93 Difference]: Finished difference Result 39939 states and 40943 transitions. [2022-11-02 21:01:30,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:01:30,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 839 [2022-11-02 21:01:30,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:30,972 INFO L225 Difference]: With dead ends: 39939 [2022-11-02 21:01:30,973 INFO L226 Difference]: Without dead ends: 21921 [2022-11-02 21:01:30,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 842 GetRequests, 838 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:30,980 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 295 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:30,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 493 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 21:01:30,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21921 states. [2022-11-02 21:01:31,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21921 to 19818. [2022-11-02 21:01:31,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19818 states, 19817 states have (on average 1.025129938941313) internal successors, (20315), 19817 states have internal predecessors, (20315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:31,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19818 states to 19818 states and 20315 transitions. [2022-11-02 21:01:31,180 INFO L78 Accepts]: Start accepts. Automaton has 19818 states and 20315 transitions. Word has length 839 [2022-11-02 21:01:31,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:31,180 INFO L495 AbstractCegarLoop]: Abstraction has 19818 states and 20315 transitions. [2022-11-02 21:01:31,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:31,181 INFO L276 IsEmpty]: Start isEmpty. Operand 19818 states and 20315 transitions. [2022-11-02 21:01:31,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 877 [2022-11-02 21:01:31,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:31,193 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 21:01:31,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:31,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:31,400 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:31,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:31,400 INFO L85 PathProgramCache]: Analyzing trace with hash -415241253, now seen corresponding path program 1 times [2022-11-02 21:01:31,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:31,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130419806] [2022-11-02 21:01:31,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:31,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:33,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 655 proven. 269 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-02 21:01:33,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:33,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130419806] [2022-11-02 21:01:33,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130419806] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:01:33,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611041153] [2022-11-02 21:01:33,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:33,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:33,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:33,352 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:33,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a25b1842-e5ea-4923-8e47-3f70eddfa997/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:01:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:33,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:01:33,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:30,813 WARN L234 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 13 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)