./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8 --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 df76811034b688387cfe28dd1eb6de91c21580662ac8ddb8163b41c1d6179172 --- 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-2329fc7 [2022-12-13 13:19:00,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:19:00,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:19:00,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:19:00,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:19:00,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:19:00,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:19:00,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:19:00,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:19:00,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:19:00,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:19:00,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:19:00,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:19:00,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:19:00,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:19:00,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:19:00,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:19:00,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:19:00,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:19:00,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:19:00,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:19:00,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:19:00,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:19:00,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:19:00,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:19:00,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:19:00,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:19:00,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:19:00,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:19:00,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:19:00,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:19:00,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:19:00,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:19:00,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:19:00,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:19:00,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:19:00,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:19:00,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:19:00,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:19:00,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:19:00,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:19:00,928 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 13:19:00,949 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:19:00,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:19:00,950 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:19:00,950 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:19:00,951 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:19:00,951 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:19:00,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:19:00,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:19:00,952 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:19:00,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:19:00,952 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:19:00,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:19:00,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:19:00,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:19:00,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:19:00,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:19:00,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:19:00,953 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:19:00,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:19:00,954 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:19:00,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:19:00,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:19:00,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:19:00,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:19:00,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:19:00,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:19:00,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:19:00,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:19:00,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:19:00,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:19:00,956 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:19:00,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:19:00,956 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:19:00,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:19:00,956 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:19:00,957 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df76811034b688387cfe28dd1eb6de91c21580662ac8ddb8163b41c1d6179172 [2022-12-13 13:19:01,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:19:01,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:19:01,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:19:01,166 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:19:01,166 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:19:01,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c [2022-12-13 13:19:03,720 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:19:03,861 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:19:03,861 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c [2022-12-13 13:19:03,866 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/data/f38ac762f/90888076ac8f4e2a98c4ac3d08ea800c/FLAG8318d5aea [2022-12-13 13:19:03,880 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/data/f38ac762f/90888076ac8f4e2a98c4ac3d08ea800c [2022-12-13 13:19:03,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:19:03,883 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:19:03,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:19:03,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:19:03,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:19:03,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:19:03" (1/1) ... [2022-12-13 13:19:03,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f3d8a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:03, skipping insertion in model container [2022-12-13 13:19:03,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:19:03" (1/1) ... [2022-12-13 13:19:03,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:19:03,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:19:04,011 WARN L237 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_384a1bd8-92e7-4084-8b86-599bc851ded7/sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c[333,346] [2022-12-13 13:19:04,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:19:04,037 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:19:04,045 WARN L237 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_384a1bd8-92e7-4084-8b86-599bc851ded7/sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c[333,346] [2022-12-13 13:19:04,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:19:04,060 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:19:04,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04 WrapperNode [2022-12-13 13:19:04,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:19:04,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:19:04,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:19:04,062 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:19:04,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04" (1/1) ... [2022-12-13 13:19:04,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04" (1/1) ... [2022-12-13 13:19:04,085 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2022-12-13 13:19:04,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:19:04,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:19:04,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:19:04,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:19:04,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04" (1/1) ... [2022-12-13 13:19:04,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04" (1/1) ... [2022-12-13 13:19:04,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04" (1/1) ... [2022-12-13 13:19:04,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04" (1/1) ... [2022-12-13 13:19:04,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04" (1/1) ... [2022-12-13 13:19:04,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04" (1/1) ... [2022-12-13 13:19:04,100 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04" (1/1) ... [2022-12-13 13:19:04,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04" (1/1) ... [2022-12-13 13:19:04,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:19:04,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:19:04,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:19:04,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:19:04,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04" (1/1) ... [2022-12-13 13:19:04,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:19:04,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:04,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:19:04,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:19:04,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:19:04,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:19:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:19:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:19:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:19:04,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:19:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:19:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:19:04,218 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:19:04,220 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:19:04,318 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:19:04,323 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:19:04,323 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 13:19:04,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:19:04 BoogieIcfgContainer [2022-12-13 13:19:04,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:19:04,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:19:04,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:19:04,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:19:04,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:19:03" (1/3) ... [2022-12-13 13:19:04,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687cfec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:19:04, skipping insertion in model container [2022-12-13 13:19:04,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:04" (2/3) ... [2022-12-13 13:19:04,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687cfec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:19:04, skipping insertion in model container [2022-12-13 13:19:04,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:19:04" (3/3) ... [2022-12-13 13:19:04,331 INFO L112 eAbstractionObserver]: Analyzing ICFG init-non-constant-3-u.c [2022-12-13 13:19:04,346 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:19:04,346 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 13:19:04,397 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:19:04,402 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;@315e6c59, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:19:04,402 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 13:19:04,405 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 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) [2022-12-13 13:19:04,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-13 13:19:04,410 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:04,410 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:04,411 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:04,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:04,414 INFO L85 PathProgramCache]: Analyzing trace with hash 468841592, now seen corresponding path program 1 times [2022-12-13 13:19:04,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:04,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752315478] [2022-12-13 13:19:04,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:04,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:04,493 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:19:04,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411065503] [2022-12-13 13:19:04,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:04,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:04,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:04,496 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:19:04,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:19:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:04,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 13:19:04,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:19:04,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:04,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:19:04,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:04,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752315478] [2022-12-13 13:19:04,578 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:19:04,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411065503] [2022-12-13 13:19:04,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411065503] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:19:04,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:19:04,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:19:04,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571336609] [2022-12-13 13:19:04,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:19:04,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 13:19:04,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:04,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 13:19:04,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:19:04,608 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:04,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:04,621 INFO L93 Difference]: Finished difference Result 40 states and 64 transitions. [2022-12-13 13:19:04,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 13:19:04,623 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-12-13 13:19:04,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:04,630 INFO L225 Difference]: With dead ends: 40 [2022-12-13 13:19:04,631 INFO L226 Difference]: Without dead ends: 17 [2022-12-13 13:19:04,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:19:04,637 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:04,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:19:04,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-13 13:19:04,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-13 13:19:04,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:04,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2022-12-13 13:19:04,669 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 9 [2022-12-13 13:19:04,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:04,670 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2022-12-13 13:19:04,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:04,670 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2022-12-13 13:19:04,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-13 13:19:04,670 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:04,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:04,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:19:04,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:04,871 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:04,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:04,872 INFO L85 PathProgramCache]: Analyzing trace with hash -386465062, now seen corresponding path program 1 times [2022-12-13 13:19:04,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:04,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514745432] [2022-12-13 13:19:04,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:04,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:04,886 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:19:04,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1855474040] [2022-12-13 13:19:04,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:04,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:04,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:04,888 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:19:04,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 13:19:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:04,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:19:04,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:19:04,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:04,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:19:04,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:04,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514745432] [2022-12-13 13:19:04,979 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:19:04,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855474040] [2022-12-13 13:19:04,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855474040] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:19:04,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:19:04,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:19:04,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850327591] [2022-12-13 13:19:04,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:19:04,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:19:04,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:04,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:19:04,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:19:04,981 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:05,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:05,010 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2022-12-13 13:19:05,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:19:05,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-12-13 13:19:05,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:05,012 INFO L225 Difference]: With dead ends: 32 [2022-12-13 13:19:05,012 INFO L226 Difference]: Without dead ends: 22 [2022-12-13 13:19:05,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:19:05,013 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:05,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:19:05,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-13 13:19:05,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2022-12-13 13:19:05,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:05,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2022-12-13 13:19:05,017 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 9 [2022-12-13 13:19:05,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:05,017 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2022-12-13 13:19:05,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:05,017 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-12-13 13:19:05,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 13:19:05,017 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:05,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:05,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 13:19:05,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:05,220 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:05,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:05,222 INFO L85 PathProgramCache]: Analyzing trace with hash 750439074, now seen corresponding path program 1 times [2022-12-13 13:19:05,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:05,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803595161] [2022-12-13 13:19:05,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:05,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:05,253 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:19:05,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692858990] [2022-12-13 13:19:05,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:05,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:05,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:05,258 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:19:05,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 13:19:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:05,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:19:05,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:19:05,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:05,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:19:05,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:05,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803595161] [2022-12-13 13:19:05,368 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:19:05,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692858990] [2022-12-13 13:19:05,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692858990] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:19:05,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:19:05,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:19:05,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480963399] [2022-12-13 13:19:05,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:19:05,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:19:05,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:05,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:19:05,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:19:05,370 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:05,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:05,410 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2022-12-13 13:19:05,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:19:05,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2022-12-13 13:19:05,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:05,411 INFO L225 Difference]: With dead ends: 44 [2022-12-13 13:19:05,411 INFO L226 Difference]: Without dead ends: 29 [2022-12-13 13:19:05,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:19:05,413 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 29 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:05,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 17 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:19:05,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-13 13:19:05,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2022-12-13 13:19:05,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:05,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2022-12-13 13:19:05,419 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 12 [2022-12-13 13:19:05,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:05,420 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2022-12-13 13:19:05,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:05,420 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2022-12-13 13:19:05,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 13:19:05,420 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:05,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:05,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 13:19:05,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:05,623 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:05,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:05,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1168938424, now seen corresponding path program 1 times [2022-12-13 13:19:05,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:05,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457726862] [2022-12-13 13:19:05,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:05,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:05,654 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:19:05,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [872853755] [2022-12-13 13:19:05,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:05,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:05,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:05,658 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:19:05,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 13:19:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:05,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:19:05,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:19:05,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:05,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:19:05,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:05,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457726862] [2022-12-13 13:19:05,730 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:19:05,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872853755] [2022-12-13 13:19:05,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872853755] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:19:05,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:19:05,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:19:05,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727605242] [2022-12-13 13:19:05,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:19:05,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:19:05,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:05,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:19:05,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:19:05,732 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:05,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:05,769 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2022-12-13 13:19:05,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:19:05,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2022-12-13 13:19:05,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:05,770 INFO L225 Difference]: With dead ends: 44 [2022-12-13 13:19:05,771 INFO L226 Difference]: Without dead ends: 27 [2022-12-13 13:19:05,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:19:05,772 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 30 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:05,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 18 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:19:05,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-13 13:19:05,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2022-12-13 13:19:05,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:05,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2022-12-13 13:19:05,776 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 15 [2022-12-13 13:19:05,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:05,776 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2022-12-13 13:19:05,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:05,776 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2022-12-13 13:19:05,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 13:19:05,776 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:05,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:05,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 13:19:05,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:05,979 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:05,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:05,981 INFO L85 PathProgramCache]: Analyzing trace with hash 18975699, now seen corresponding path program 1 times [2022-12-13 13:19:05,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:05,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123425098] [2022-12-13 13:19:05,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:05,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:06,018 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:19:06,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1593198239] [2022-12-13 13:19:06,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:06,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:06,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:06,021 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:19:06,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 13:19:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:19:06,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 13:19:06,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:19:06,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:06,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:19:06,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:06,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:06,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123425098] [2022-12-13 13:19:06,121 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:19:06,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593198239] [2022-12-13 13:19:06,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593198239] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:19:06,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:19:06,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-12-13 13:19:06,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585477347] [2022-12-13 13:19:06,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:19:06,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 13:19:06,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:06,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 13:19:06,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:19:06,123 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:06,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:06,197 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2022-12-13 13:19:06,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:19:06,197 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-13 13:19:06,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:06,198 INFO L225 Difference]: With dead ends: 60 [2022-12-13 13:19:06,198 INFO L226 Difference]: Without dead ends: 41 [2022-12-13 13:19:06,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:19:06,199 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 55 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:06,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 39 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:19:06,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-12-13 13:19:06,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2022-12-13 13:19:06,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:06,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2022-12-13 13:19:06,207 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 16 [2022-12-13 13:19:06,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:06,207 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2022-12-13 13:19:06,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:06,207 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2022-12-13 13:19:06,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-13 13:19:06,208 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:06,208 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:06,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 13:19:06,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:06,409 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:06,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:06,411 INFO L85 PathProgramCache]: Analyzing trace with hash -163134344, now seen corresponding path program 2 times [2022-12-13 13:19:06,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:06,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743793196] [2022-12-13 13:19:06,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:06,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:06,450 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:19:06,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [890393507] [2022-12-13 13:19:06,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:19:06,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:06,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:06,455 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:19:06,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 13:19:06,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:19:06,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:19:06,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 13:19:06,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:19:06,591 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:06,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:19:06,649 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:19:06,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:06,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743793196] [2022-12-13 13:19:06,650 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:19:06,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890393507] [2022-12-13 13:19:06,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890393507] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:19:06,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:19:06,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-12-13 13:19:06,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863315207] [2022-12-13 13:19:06,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:19:06,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 13:19:06,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:06,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 13:19:06,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2022-12-13 13:19:06,652 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:06,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:06,791 INFO L93 Difference]: Finished difference Result 108 states and 133 transitions. [2022-12-13 13:19:06,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 13:19:06,791 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 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 19 [2022-12-13 13:19:06,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:06,792 INFO L225 Difference]: With dead ends: 108 [2022-12-13 13:19:06,792 INFO L226 Difference]: Without dead ends: 77 [2022-12-13 13:19:06,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2022-12-13 13:19:06,793 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 107 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:06,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 59 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:19:06,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-12-13 13:19:06,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 58. [2022-12-13 13:19:06,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.263157894736842) internal successors, (72), 57 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:06,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2022-12-13 13:19:06,806 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 19 [2022-12-13 13:19:06,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:06,806 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2022-12-13 13:19:06,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:06,806 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2022-12-13 13:19:06,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-13 13:19:06,807 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:06,807 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:06,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 13:19:07,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:07,008 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:07,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:07,008 INFO L85 PathProgramCache]: Analyzing trace with hash 125892248, now seen corresponding path program 3 times [2022-12-13 13:19:07,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:07,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377013954] [2022-12-13 13:19:07,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:07,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:07,022 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:19:07,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1168744827] [2022-12-13 13:19:07,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:19:07,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:07,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:07,023 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:19:07,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 13:19:07,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 13:19:07,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:19:07,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 13:19:07,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:19:07,134 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-12-13 13:19:07,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:19:07,167 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-12-13 13:19:07,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:07,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377013954] [2022-12-13 13:19:07,167 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:19:07,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168744827] [2022-12-13 13:19:07,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168744827] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:19:07,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:19:07,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-13 13:19:07,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096830457] [2022-12-13 13:19:07,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:19:07,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:19:07,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:07,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:19:07,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:19:07,169 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:07,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:07,229 INFO L93 Difference]: Finished difference Result 145 states and 179 transitions. [2022-12-13 13:19:07,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:19:07,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2022-12-13 13:19:07,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:07,231 INFO L225 Difference]: With dead ends: 145 [2022-12-13 13:19:07,232 INFO L226 Difference]: Without dead ends: 106 [2022-12-13 13:19:07,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:19:07,232 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 21 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:07,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 33 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:19:07,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-12-13 13:19:07,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-12-13 13:19:07,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.2) internal successors, (126), 105 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) [2022-12-13 13:19:07,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 126 transitions. [2022-12-13 13:19:07,245 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 126 transitions. Word has length 25 [2022-12-13 13:19:07,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:07,245 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 126 transitions. [2022-12-13 13:19:07,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:07,245 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 126 transitions. [2022-12-13 13:19:07,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-13 13:19:07,246 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:07,246 INFO L195 NwaCegarLoop]: trace histogram [40, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:07,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 13:19:07,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 13:19:07,447 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:07,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:07,448 INFO L85 PathProgramCache]: Analyzing trace with hash -976524846, now seen corresponding path program 4 times [2022-12-13 13:19:07,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:07,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041154056] [2022-12-13 13:19:07,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:07,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:07,476 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:19:07,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [730432823] [2022-12-13 13:19:07,477 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 13:19:07,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:07,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:07,478 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:19:07,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 13:19:07,576 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 13:19:07,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:19:07,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 13:19:07,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:19:07,712 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 427 proven. 11 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2022-12-13 13:19:07,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:19:07,834 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 427 proven. 11 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2022-12-13 13:19:07,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:19:07,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041154056] [2022-12-13 13:19:07,834 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:19:07,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730432823] [2022-12-13 13:19:07,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730432823] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:19:07,834 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:19:07,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2022-12-13 13:19:07,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516324574] [2022-12-13 13:19:07,835 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:19:07,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 13:19:07,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:19:07,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 13:19:07,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=484, Unknown=0, NotChecked=0, Total=756 [2022-12-13 13:19:07,837 INFO L87 Difference]: Start difference. First operand 106 states and 126 transitions. Second operand has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:08,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:19:08,457 INFO L93 Difference]: Finished difference Result 497 states and 572 transitions. [2022-12-13 13:19:08,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-13 13:19:08,458 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-12-13 13:19:08,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:19:08,460 INFO L225 Difference]: With dead ends: 497 [2022-12-13 13:19:08,460 INFO L226 Difference]: Without dead ends: 408 [2022-12-13 13:19:08,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1244 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1415, Invalid=2617, Unknown=0, NotChecked=0, Total=4032 [2022-12-13 13:19:08,463 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 217 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:19:08,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 256 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:19:08,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-12-13 13:19:08,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 361. [2022-12-13 13:19:08,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.1833333333333333) internal successors, (426), 360 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:08,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 426 transitions. [2022-12-13 13:19:08,515 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 426 transitions. Word has length 73 [2022-12-13 13:19:08,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:19:08,515 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 426 transitions. [2022-12-13 13:19:08,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:19:08,516 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 426 transitions. [2022-12-13 13:19:08,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-12-13 13:19:08,520 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:19:08,521 INFO L195 NwaCegarLoop]: trace histogram [160, 16, 16, 16, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:19:08,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 13:19:08,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:08,721 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:19:08,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:19:08,722 INFO L85 PathProgramCache]: Analyzing trace with hash -367550246, now seen corresponding path program 5 times [2022-12-13 13:19:08,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:19:08,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001483075] [2022-12-13 13:19:08,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:19:08,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:19:08,780 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:19:08,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1275028961] [2022-12-13 13:19:08,780 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 13:19:08,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:19:08,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:08,781 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:19:08,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384a1bd8-92e7-4084-8b86-599bc851ded7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process