./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/rev-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_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/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_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-multidimensional/rev-3-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/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_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/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 fe3cf414f0e241a9a4e73e59647cf6619ea50b905df4a1c2a404b3413992b780 --- 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 21:32:00,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:32:00,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:32:00,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:32:00,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:32:00,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:32:00,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:32:00,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:32:00,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:32:00,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:32:00,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:32:00,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:32:00,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:32:00,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:32:00,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:32:00,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:32:00,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:32:00,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:32:00,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:32:00,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:32:00,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:32:00,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:32:00,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:32:00,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:32:00,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:32:00,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:32:00,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:32:00,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:32:00,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:32:00,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:32:00,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:32:00,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:32:00,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:32:00,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:32:00,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:32:00,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:32:00,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:32:00,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:32:00,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:32:00,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:32:00,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:32:00,867 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 21:32:00,882 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:32:00,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:32:00,882 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:32:00,883 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:32:00,883 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:32:00,883 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:32:00,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:32:00,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:32:00,884 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:32:00,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:32:00,884 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:32:00,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:32:00,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:32:00,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:32:00,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:32:00,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:32:00,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:32:00,885 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:32:00,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:32:00,885 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:32:00,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:32:00,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:32:00,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:32:00,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:32:00,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:32:00,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:32:00,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:32:00,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:32:00,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:32:00,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:32:00,887 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:32:00,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:32:00,887 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:32:00,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:32:00,887 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:32:00,887 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_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe3cf414f0e241a9a4e73e59647cf6619ea50b905df4a1c2a404b3413992b780 [2022-12-13 21:32:01,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:32:01,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:32:01,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:32:01,074 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:32:01,074 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:32:01,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-multidimensional/rev-3-u.c [2022-12-13 21:32:03,653 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:32:03,763 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:32:03,764 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/sv-benchmarks/c/array-multidimensional/rev-3-u.c [2022-12-13 21:32:03,768 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/data/f6f26531a/1a6b49d8936d42528161ffc91b28d3bf/FLAGd0765dba8 [2022-12-13 21:32:03,778 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/data/f6f26531a/1a6b49d8936d42528161ffc91b28d3bf [2022-12-13 21:32:03,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:32:03,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:32:03,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:32:03,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:32:03,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:32:03,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:32:03" (1/1) ... [2022-12-13 21:32:03,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d0b658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:32:03, skipping insertion in model container [2022-12-13 21:32:03,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:32:03" (1/1) ... [2022-12-13 21:32:03,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:32:03,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:32:03,897 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_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/sv-benchmarks/c/array-multidimensional/rev-3-u.c[319,332] [2022-12-13 21:32:03,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:32:03,919 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:32:03,927 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_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/sv-benchmarks/c/array-multidimensional/rev-3-u.c[319,332] [2022-12-13 21:32:03,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:32:03,944 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:32:03,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:32:03 WrapperNode [2022-12-13 21:32:03,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:32:03,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:32:03,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:32:03,945 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:32:03,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:32:03" (1/1) ... [2022-12-13 21:32:03,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:32:03" (1/1) ... [2022-12-13 21:32:03,970 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 106 [2022-12-13 21:32:03,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:32:03,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:32:03,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:32:03,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:32:03,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:32:03" (1/1) ... [2022-12-13 21:32:03,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:32:03" (1/1) ... [2022-12-13 21:32:03,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:32:03" (1/1) ... [2022-12-13 21:32:03,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:32:03" (1/1) ... [2022-12-13 21:32:03,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:32:03" (1/1) ... [2022-12-13 21:32:03,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:32:03" (1/1) ... [2022-12-13 21:32:03,987 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:32:03" (1/1) ... [2022-12-13 21:32:03,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:32:03" (1/1) ... [2022-12-13 21:32:03,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:32:03,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:32:03,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:32:03,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:32:03,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:32:03" (1/1) ... [2022-12-13 21:32:03,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:32:04,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:32:04,014 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:32:04,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:32:04,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:32:04,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:32:04,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:32:04,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:32:04,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:32:04,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:32:04,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 21:32:04,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:32:04,104 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:32:04,105 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:32:04,226 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:32:04,230 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:32:04,231 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-12-13 21:32:04,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:32:04 BoogieIcfgContainer [2022-12-13 21:32:04,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:32:04,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:32:04,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:32:04,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:32:04,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:32:03" (1/3) ... [2022-12-13 21:32:04,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e51d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:32:04, skipping insertion in model container [2022-12-13 21:32:04,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:32:03" (2/3) ... [2022-12-13 21:32:04,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e51d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:32:04, skipping insertion in model container [2022-12-13 21:32:04,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:32:04" (3/3) ... [2022-12-13 21:32:04,239 INFO L112 eAbstractionObserver]: Analyzing ICFG rev-3-u.c [2022-12-13 21:32:04,252 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:32:04,253 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 21:32:04,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:32:04,290 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;@53cc9d86, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:32:04,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 21:32:04,293 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.8) internal successors, (45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 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 21:32:04,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 21:32:04,298 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:32:04,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:32:04,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:32:04,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:04,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1568356865, now seen corresponding path program 1 times [2022-12-13 21:32:04,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:32:04,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728612213] [2022-12-13 21:32:04,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:32:04,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:32:04,376 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:32:04,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1931375460] [2022-12-13 21:32:04,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:32:04,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:32:04,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:32:04,378 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:32:04,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 21:32:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:32:04,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 21:32:04,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:04,478 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 21:32:04,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:32:04,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:32:04,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728612213] [2022-12-13 21:32:04,479 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:32:04,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931375460] [2022-12-13 21:32:04,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931375460] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:32:04,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:32:04,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:32:04,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444545291] [2022-12-13 21:32:04,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:32:04,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:32:04,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:32:04,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:32:04,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:32:04,510 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.8) internal successors, (45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 21:32:04,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:32:04,528 INFO L93 Difference]: Finished difference Result 52 states and 88 transitions. [2022-12-13 21:32:04,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:32:04,531 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-12-13 21:32:04,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:32:04,538 INFO L225 Difference]: With dead ends: 52 [2022-12-13 21:32:04,538 INFO L226 Difference]: Without dead ends: 23 [2022-12-13 21:32:04,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 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 21:32:04,543 INFO L413 NwaCegarLoop]: 35 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, 35 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 21:32:04,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:32:04,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-13 21:32:04,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-12-13 21:32:04,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 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 21:32:04,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2022-12-13 21:32:04,566 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 11 [2022-12-13 21:32:04,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:32:04,566 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2022-12-13 21:32:04,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 21:32:04,567 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2022-12-13 21:32:04,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 21:32:04,567 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:32:04,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:32:04,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:32:04,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:32:04,770 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:32:04,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:04,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1115669473, now seen corresponding path program 1 times [2022-12-13 21:32:04,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:32:04,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413250905] [2022-12-13 21:32:04,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:32:04,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:32:04,804 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:32:04,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1467091727] [2022-12-13 21:32:04,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:32:04,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:32:04,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:32:04,807 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:32:04,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 21:32:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:32:04,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 21:32:04,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:04,926 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 21:32:04,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:32:04,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:32:04,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413250905] [2022-12-13 21:32:04,926 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:32:04,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467091727] [2022-12-13 21:32:04,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467091727] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:32:04,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:32:04,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:32:04,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721127946] [2022-12-13 21:32:04,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:32:04,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:32:04,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:32:04,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:32:04,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:32:04,929 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 21:32:04,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:32:04,972 INFO L93 Difference]: Finished difference Result 44 states and 60 transitions. [2022-12-13 21:32:04,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:32:04,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-12-13 21:32:04,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:32:04,973 INFO L225 Difference]: With dead ends: 44 [2022-12-13 21:32:04,973 INFO L226 Difference]: Without dead ends: 28 [2022-12-13 21:32:04,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 21:32:04,975 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:32:04,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 33 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:32:04,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-13 21:32:04,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2022-12-13 21:32:04,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 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 21:32:04,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2022-12-13 21:32:04,979 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 11 [2022-12-13 21:32:04,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:32:04,979 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2022-12-13 21:32:04,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 21:32:04,979 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2022-12-13 21:32:04,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-13 21:32:04,980 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:32:04,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:32:04,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 21:32:05,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:32:05,182 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:32:05,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:05,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1536116311, now seen corresponding path program 1 times [2022-12-13 21:32:05,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:32:05,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950393791] [2022-12-13 21:32:05,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:32:05,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:32:05,239 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:32:05,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216414989] [2022-12-13 21:32:05,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:32:05,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:32:05,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:32:05,245 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:32:05,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 21:32:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:32:05,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 21:32:05,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:05,354 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 21:32:05,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:32:05,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:32:05,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950393791] [2022-12-13 21:32:05,354 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:32:05,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216414989] [2022-12-13 21:32:05,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216414989] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:32:05,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:32:05,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:32:05,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253306549] [2022-12-13 21:32:05,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:32:05,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:32:05,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:32:05,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:32:05,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:32:05,357 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 21:32:05,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:32:05,413 INFO L93 Difference]: Finished difference Result 61 states and 84 transitions. [2022-12-13 21:32:05,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:32:05,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2022-12-13 21:32:05,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:32:05,414 INFO L225 Difference]: With dead ends: 61 [2022-12-13 21:32:05,414 INFO L226 Difference]: Without dead ends: 40 [2022-12-13 21:32:05,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 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 21:32:05,416 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 62 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:32:05,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 19 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:32:05,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-12-13 21:32:05,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2022-12-13 21:32:05,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 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 21:32:05,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2022-12-13 21:32:05,423 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 14 [2022-12-13 21:32:05,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:32:05,423 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2022-12-13 21:32:05,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 21:32:05,423 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2022-12-13 21:32:05,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-13 21:32:05,423 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:32:05,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:32:05,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 21:32:05,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:32:05,626 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:32:05,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:05,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1209800511, now seen corresponding path program 1 times [2022-12-13 21:32:05,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:32:05,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575635535] [2022-12-13 21:32:05,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:32:05,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:32:05,656 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:32:05,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [888988352] [2022-12-13 21:32:05,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:32:05,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:32:05,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:32:05,660 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:32:05,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 21:32:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:32:05,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 21:32:05,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:05,762 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 21:32:05,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:32:05,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:32:05,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575635535] [2022-12-13 21:32:05,763 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:32:05,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888988352] [2022-12-13 21:32:05,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888988352] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:32:05,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:32:05,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:32:05,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446412256] [2022-12-13 21:32:05,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:32:05,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:32:05,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:32:05,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:32:05,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:32:05,765 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 21:32:05,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:32:05,808 INFO L93 Difference]: Finished difference Result 61 states and 81 transitions. [2022-12-13 21:32:05,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:32:05,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2022-12-13 21:32:05,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:32:05,809 INFO L225 Difference]: With dead ends: 61 [2022-12-13 21:32:05,810 INFO L226 Difference]: Without dead ends: 37 [2022-12-13 21:32:05,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 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 21:32:05,811 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 29 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:32:05,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 24 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:32:05,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-12-13 21:32:05,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2022-12-13 21:32:05,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 states have internal predecessors, (38), 0 states have call successors, (0), 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 21:32:05,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2022-12-13 21:32:05,815 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 17 [2022-12-13 21:32:05,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:32:05,815 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2022-12-13 21:32:05,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 21:32:05,815 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2022-12-13 21:32:05,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 21:32:05,816 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:32:05,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:32:05,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 21:32:06,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:32:06,017 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:32:06,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:06,018 INFO L85 PathProgramCache]: Analyzing trace with hash -97783142, now seen corresponding path program 1 times [2022-12-13 21:32:06,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:32:06,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860879870] [2022-12-13 21:32:06,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:32:06,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:32:06,029 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:32:06,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672611487] [2022-12-13 21:32:06,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:32:06,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:32:06,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:32:06,031 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:32:06,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 21:32:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:32:06,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:32:06,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:06,113 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 21:32:06,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:32:06,137 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 21:32:06,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:32:06,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860879870] [2022-12-13 21:32:06,137 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:32:06,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672611487] [2022-12-13 21:32:06,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672611487] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:32:06,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:32:06,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-12-13 21:32:06,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961681758] [2022-12-13 21:32:06,138 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:32:06,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:32:06,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:32:06,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:32:06,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:32:06,140 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 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 21:32:06,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:32:06,242 INFO L93 Difference]: Finished difference Result 81 states and 107 transitions. [2022-12-13 21:32:06,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:32:06,243 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 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) Word has length 18 [2022-12-13 21:32:06,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:32:06,244 INFO L225 Difference]: With dead ends: 81 [2022-12-13 21:32:06,244 INFO L226 Difference]: Without dead ends: 54 [2022-12-13 21:32:06,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 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 21:32:06,245 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 77 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:32:06,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 43 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:32:06,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-12-13 21:32:06,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2022-12-13 21:32:06,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 44 states have internal predecessors, (56), 0 states have call successors, (0), 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 21:32:06,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2022-12-13 21:32:06,254 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 18 [2022-12-13 21:32:06,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:32:06,254 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2022-12-13 21:32:06,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 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 21:32:06,254 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2022-12-13 21:32:06,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-13 21:32:06,255 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:32:06,255 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:32:06,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 21:32:06,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:32:06,456 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:32:06,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:06,458 INFO L85 PathProgramCache]: Analyzing trace with hash 988124671, now seen corresponding path program 2 times [2022-12-13 21:32:06,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:32:06,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309199977] [2022-12-13 21:32:06,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:32:06,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:32:06,489 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:32:06,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813838748] [2022-12-13 21:32:06,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:32:06,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:32:06,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:32:06,493 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:32:06,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 21:32:06,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 21:32:06,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:32:06,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 21:32:06,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:06,661 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 21:32:06,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:32:06,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:32:06,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309199977] [2022-12-13 21:32:06,661 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:32:06,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813838748] [2022-12-13 21:32:06,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813838748] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:32:06,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:32:06,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:32:06,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269806877] [2022-12-13 21:32:06,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:32:06,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:32:06,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:32:06,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:32:06,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:32:06,663 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 21:32:06,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:32:06,709 INFO L93 Difference]: Finished difference Result 105 states and 131 transitions. [2022-12-13 21:32:06,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:32:06,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 21 [2022-12-13 21:32:06,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:32:06,711 INFO L225 Difference]: With dead ends: 105 [2022-12-13 21:32:06,711 INFO L226 Difference]: Without dead ends: 84 [2022-12-13 21:32:06,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 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 21:32:06,712 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 43 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:32:06,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 20 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:32:06,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-12-13 21:32:06,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 46. [2022-12-13 21:32:06,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 45 states have internal predecessors, (57), 0 states have call successors, (0), 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 21:32:06,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2022-12-13 21:32:06,718 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 21 [2022-12-13 21:32:06,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:32:06,718 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2022-12-13 21:32:06,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 21:32:06,719 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2022-12-13 21:32:06,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-13 21:32:06,719 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:32:06,719 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:32:06,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 21:32:06,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:32:06,921 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:32:06,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:06,923 INFO L85 PathProgramCache]: Analyzing trace with hash 53106109, now seen corresponding path program 1 times [2022-12-13 21:32:06,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:32:06,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987936911] [2022-12-13 21:32:06,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:32:06,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:32:06,964 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:32:06,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [960016124] [2022-12-13 21:32:06,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:32:06,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:32:06,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:32:06,968 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:32:06,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 21:32:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:32:07,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 21:32:07,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:07,167 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 21:32:07,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:32:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 21:32:07,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:32:07,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987936911] [2022-12-13 21:32:07,219 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:32:07,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960016124] [2022-12-13 21:32:07,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960016124] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:32:07,219 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:32:07,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-12-13 21:32:07,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942294078] [2022-12-13 21:32:07,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:32:07,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 21:32:07,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:32:07,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 21:32:07,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2022-12-13 21:32:07,221 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 21:32:07,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:32:07,399 INFO L93 Difference]: Finished difference Result 138 states and 175 transitions. [2022-12-13 21:32:07,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 21:32:07,399 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 31 [2022-12-13 21:32:07,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:32:07,400 INFO L225 Difference]: With dead ends: 138 [2022-12-13 21:32:07,400 INFO L226 Difference]: Without dead ends: 95 [2022-12-13 21:32:07,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 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 21:32:07,402 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 167 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:32:07,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 49 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:32:07,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-12-13 21:32:07,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 76. [2022-12-13 21:32:07,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.24) internal successors, (93), 75 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:32:07,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2022-12-13 21:32:07,411 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 31 [2022-12-13 21:32:07,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:32:07,411 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2022-12-13 21:32:07,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 21:32:07,411 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2022-12-13 21:32:07,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-13 21:32:07,412 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:32:07,412 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:32:07,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 21:32:07,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 21:32:07,613 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:32:07,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:07,614 INFO L85 PathProgramCache]: Analyzing trace with hash 2141491421, now seen corresponding path program 2 times [2022-12-13 21:32:07,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:32:07,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59903578] [2022-12-13 21:32:07,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:32:07,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:32:07,672 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:32:07,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797160592] [2022-12-13 21:32:07,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:32:07,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:32:07,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:32:07,676 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:32:07,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 21:32:07,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:32:07,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:32:07,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 21:32:07,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:08,025 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-13 21:32:08,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:32:08,163 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-13 21:32:08,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:32:08,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59903578] [2022-12-13 21:32:08,163 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:32:08,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797160592] [2022-12-13 21:32:08,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797160592] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:32:08,163 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:32:08,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-12-13 21:32:08,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334675014] [2022-12-13 21:32:08,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:32:08,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 21:32:08,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:32:08,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 21:32:08,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2022-12-13 21:32:08,166 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 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 21:32:08,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:32:08,586 INFO L93 Difference]: Finished difference Result 252 states and 313 transitions. [2022-12-13 21:32:08,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-13 21:32:08,586 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-12-13 21:32:08,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:32:08,587 INFO L225 Difference]: With dead ends: 252 [2022-12-13 21:32:08,587 INFO L226 Difference]: Without dead ends: 179 [2022-12-13 21:32:08,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=589, Invalid=743, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 21:32:08,589 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 502 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:32:08,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 91 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 21:32:08,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-12-13 21:32:08,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 136. [2022-12-13 21:32:08,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.2222222222222223) internal successors, (165), 135 states have internal predecessors, (165), 0 states have call successors, (0), 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 21:32:08,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 165 transitions. [2022-12-13 21:32:08,611 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 165 transitions. Word has length 43 [2022-12-13 21:32:08,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:32:08,612 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 165 transitions. [2022-12-13 21:32:08,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 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 21:32:08,612 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 165 transitions. [2022-12-13 21:32:08,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-13 21:32:08,613 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:32:08,613 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:32:08,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 21:32:08,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:32:08,815 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:32:08,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:08,816 INFO L85 PathProgramCache]: Analyzing trace with hash 587853597, now seen corresponding path program 3 times [2022-12-13 21:32:08,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:32:08,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534409414] [2022-12-13 21:32:08,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:32:08,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:32:08,898 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:32:08,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [997327170] [2022-12-13 21:32:08,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:32:08,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:32:08,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:32:08,903 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:32:08,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 21:32:09,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 21:32:09,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:32:09,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:32:09,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:09,139 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2022-12-13 21:32:09,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:32:09,209 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2022-12-13 21:32:09,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:32:09,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534409414] [2022-12-13 21:32:09,209 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:32:09,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997327170] [2022-12-13 21:32:09,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997327170] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:32:09,209 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:32:09,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-12-13 21:32:09,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968820178] [2022-12-13 21:32:09,210 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:32:09,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:32:09,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:32:09,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:32:09,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:32:09,211 INFO L87 Difference]: Start difference. First operand 136 states and 165 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:32:09,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:32:09,329 INFO L93 Difference]: Finished difference Result 632 states and 774 transitions. [2022-12-13 21:32:09,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:32:09,329 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-12-13 21:32:09,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:32:09,331 INFO L225 Difference]: With dead ends: 632 [2022-12-13 21:32:09,331 INFO L226 Difference]: Without dead ends: 527 [2022-12-13 21:32:09,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 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 21:32:09,333 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 190 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:32:09,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 35 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:32:09,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2022-12-13 21:32:09,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 304. [2022-12-13 21:32:09,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.1386138613861385) internal successors, (345), 303 states have internal predecessors, (345), 0 states have call successors, (0), 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 21:32:09,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 345 transitions. [2022-12-13 21:32:09,368 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 345 transitions. Word has length 67 [2022-12-13 21:32:09,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:32:09,368 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 345 transitions. [2022-12-13 21:32:09,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:32:09,368 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 345 transitions. [2022-12-13 21:32:09,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-12-13 21:32:09,372 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:32:09,372 INFO L195 NwaCegarLoop]: trace histogram [88, 88, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:32:09,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 21:32:09,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:32:09,574 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:32:09,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:09,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1854973743, now seen corresponding path program 4 times [2022-12-13 21:32:09,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:32:09,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827406342] [2022-12-13 21:32:09,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:32:09,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:32:09,693 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:32:09,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171664082] [2022-12-13 21:32:09,694 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 21:32:09,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:32:09,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:32:09,695 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:32:09,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 21:32:09,896 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 21:32:09,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:32:09,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 21:32:09,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:32:10,016 INFO L134 CoverageAnalysis]: Checked inductivity of 8472 backedges. 196 proven. 1603 refuted. 0 times theorem prover too weak. 6673 trivial. 0 not checked. [2022-12-13 21:32:10,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:32:10,147 INFO L134 CoverageAnalysis]: Checked inductivity of 8472 backedges. 196 proven. 1603 refuted. 0 times theorem prover too weak. 6673 trivial. 0 not checked. [2022-12-13 21:32:10,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:32:10,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827406342] [2022-12-13 21:32:10,148 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:32:10,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171664082] [2022-12-13 21:32:10,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171664082] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:32:10,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:32:10,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-12-13 21:32:10,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187544211] [2022-12-13 21:32:10,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:32:10,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 21:32:10,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:32:10,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 21:32:10,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:32:10,150 INFO L87 Difference]: Start difference. First operand 304 states and 345 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 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 21:32:10,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:32:10,396 INFO L93 Difference]: Finished difference Result 1160 states and 1311 transitions. [2022-12-13 21:32:10,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 21:32:10,397 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 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 235 [2022-12-13 21:32:10,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:32:10,400 INFO L225 Difference]: With dead ends: 1160 [2022-12-13 21:32:10,400 INFO L226 Difference]: Without dead ends: 849 [2022-12-13 21:32:10,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 458 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-12-13 21:32:10,402 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 71 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:32:10,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 61 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:32:10,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-12-13 21:32:10,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 581. [2022-12-13 21:32:10,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 580 states have (on average 1.1293103448275863) internal successors, (655), 580 states have internal predecessors, (655), 0 states have call successors, (0), 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 21:32:10,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 655 transitions. [2022-12-13 21:32:10,468 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 655 transitions. Word has length 235 [2022-12-13 21:32:10,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:32:10,468 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 655 transitions. [2022-12-13 21:32:10,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 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 21:32:10,468 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 655 transitions. [2022-12-13 21:32:10,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-12-13 21:32:10,473 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:32:10,473 INFO L195 NwaCegarLoop]: trace histogram [176, 154, 8, 8, 8, 7, 7, 7, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:32:10,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 21:32:10,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:32:10,676 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:32:10,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:32:10,677 INFO L85 PathProgramCache]: Analyzing trace with hash -765694528, now seen corresponding path program 5 times [2022-12-13 21:32:10,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:32:10,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723819987] [2022-12-13 21:32:10,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:32:10,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:32:10,894 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:32:10,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1103876214] [2022-12-13 21:32:10,895 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 21:32:10,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:32:10,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:32:10,896 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:32:10,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbe7f660-6656-4b6c-aa9c-9800c8b7721f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process