./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/sina5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/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_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/sina5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/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_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/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 503513a726b63dcf7252b591818901fbaab844b1443a8550e123aa98a06238f6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 13:42:02,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:42:02,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:42:02,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:42:02,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:42:02,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:42:02,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:42:02,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:42:02,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:42:02,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:42:02,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:42:02,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:42:02,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:42:02,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:42:02,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:42:02,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:42:02,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:42:02,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:42:02,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:42:02,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:42:02,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:42:02,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:42:02,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:42:02,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:42:02,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:42:02,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:42:02,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:42:02,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:42:02,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:42:02,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:42:02,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:42:02,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:42:02,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:42:02,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:42:02,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:42:02,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:42:02,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:42:02,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:42:02,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:42:02,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:42:02,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:42:02,958 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 13:42:02,972 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:42:02,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:42:02,972 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:42:02,972 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:42:02,973 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:42:02,973 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:42:02,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:42:02,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:42:02,980 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:42:02,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:42:02,981 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:42:02,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:42:02,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:42:02,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:42:02,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:42:02,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:42:02,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:42:02,982 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:42:02,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:42:02,982 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:42:02,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:42:02,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:42:02,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:42:02,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:42:02,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:42:02,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:42:02,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:42:02,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:42:02,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:42:02,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:42:02,984 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:42:02,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:42:02,984 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:42:02,984 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:42:02,984 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:42:02,984 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_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503513a726b63dcf7252b591818901fbaab844b1443a8550e123aa98a06238f6 [2022-12-13 13:42:03,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:42:03,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:42:03,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:42:03,182 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:42:03,183 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:42:03,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-fpi/sina5.c [2022-12-13 13:42:05,795 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:42:05,947 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:42:05,947 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/sv-benchmarks/c/array-fpi/sina5.c [2022-12-13 13:42:05,952 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/data/f6d9c150e/8a5382d180824b50bac201d8358cfe84/FLAG9b1b41f1c [2022-12-13 13:42:05,962 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/data/f6d9c150e/8a5382d180824b50bac201d8358cfe84 [2022-12-13 13:42:05,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:42:05,965 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:42:05,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:42:05,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:42:05,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:42:05,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:42:05" (1/1) ... [2022-12-13 13:42:05,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@662f7583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:42:05, skipping insertion in model container [2022-12-13 13:42:05,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:42:05" (1/1) ... [2022-12-13 13:42:05,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:42:05,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:42:06,090 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_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/sv-benchmarks/c/array-fpi/sina5.c[588,601] [2022-12-13 13:42:06,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:42:06,115 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:42:06,125 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_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/sv-benchmarks/c/array-fpi/sina5.c[588,601] [2022-12-13 13:42:06,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:42:06,144 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:42:06,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:42:06 WrapperNode [2022-12-13 13:42:06,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:42:06,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:42:06,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:42:06,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:42:06,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:42:06" (1/1) ... [2022-12-13 13:42:06,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:42:06" (1/1) ... [2022-12-13 13:42:06,182 INFO L138 Inliner]: procedures = 17, calls = 35, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 117 [2022-12-13 13:42:06,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:42:06,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:42:06,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:42:06,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:42:06,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:42:06" (1/1) ... [2022-12-13 13:42:06,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:42:06" (1/1) ... [2022-12-13 13:42:06,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:42:06" (1/1) ... [2022-12-13 13:42:06,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:42:06" (1/1) ... [2022-12-13 13:42:06,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:42:06" (1/1) ... [2022-12-13 13:42:06,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:42:06" (1/1) ... [2022-12-13 13:42:06,206 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:42:06" (1/1) ... [2022-12-13 13:42:06,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:42:06" (1/1) ... [2022-12-13 13:42:06,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:42:06,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:42:06,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:42:06,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:42:06,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:42:06" (1/1) ... [2022-12-13 13:42:06,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:42:06,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:42:06,241 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:42:06,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:42:06,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:42:06,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:42:06,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:42:06,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:42:06,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 13:42:06,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:42:06,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:42:06,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:42:06,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:42:06,359 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:42:06,361 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:42:06,512 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:42:06,516 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:42:06,516 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 13:42:06,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:42:06 BoogieIcfgContainer [2022-12-13 13:42:06,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:42:06,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:42:06,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:42:06,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:42:06,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:42:05" (1/3) ... [2022-12-13 13:42:06,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cbe72e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:42:06, skipping insertion in model container [2022-12-13 13:42:06,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:42:06" (2/3) ... [2022-12-13 13:42:06,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cbe72e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:42:06, skipping insertion in model container [2022-12-13 13:42:06,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:42:06" (3/3) ... [2022-12-13 13:42:06,524 INFO L112 eAbstractionObserver]: Analyzing ICFG sina5.c [2022-12-13 13:42:06,537 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:42:06,537 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 13:42:06,570 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:42:06,574 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;@79b53319, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:42:06,574 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 13:42:06,577 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:42:06,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 13:42:06,584 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:42:06,584 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 13:42:06,584 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:42:06,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:42:06,588 INFO L85 PathProgramCache]: Analyzing trace with hash -635308358, now seen corresponding path program 1 times [2022-12-13 13:42:06,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:42:06,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395043074] [2022-12-13 13:42:06,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:42:06,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:42:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:42:06,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:42:06,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:42:06,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395043074] [2022-12-13 13:42:06,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395043074] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:42:06,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:42:06,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:42:06,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234385920] [2022-12-13 13:42:06,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:42:06,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 13:42:06,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:42:06,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 13:42:06,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:42:06,736 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 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 9.0) internal successors, (18), 2 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 13:42:06,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:42:06,748 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2022-12-13 13:42:06,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 13:42:06,750 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 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 18 [2022-12-13 13:42:06,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:42:06,755 INFO L225 Difference]: With dead ends: 56 [2022-12-13 13:42:06,755 INFO L226 Difference]: Without dead ends: 26 [2022-12-13 13:42:06,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:42:06,759 INFO L413 NwaCegarLoop]: 36 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, 36 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:42:06,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:42:06,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-13 13:42:06,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-12-13 13:42:06,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 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 13:42:06,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-12-13 13:42:06,783 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 18 [2022-12-13 13:42:06,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:42:06,783 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-12-13 13:42:06,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 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 13:42:06,783 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-12-13 13:42:06,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 13:42:06,784 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:42:06,784 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 13:42:06,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:42:06,784 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:42:06,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:42:06,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1344199344, now seen corresponding path program 1 times [2022-12-13 13:42:06,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:42:06,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192421178] [2022-12-13 13:42:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:42:06,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:42:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:42:06,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:42:06,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:42:06,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192421178] [2022-12-13 13:42:06,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192421178] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:42:06,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:42:06,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:42:06,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116587262] [2022-12-13 13:42:06,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:42:06,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:42:06,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:42:06,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:42:06,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:42:06,939 INFO L87 Difference]: Start difference. First operand 26 states and 31 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 13:42:07,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:42:07,012 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2022-12-13 13:42:07,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:42:07,013 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 18 [2022-12-13 13:42:07,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:42:07,013 INFO L225 Difference]: With dead ends: 61 [2022-12-13 13:42:07,013 INFO L226 Difference]: Without dead ends: 42 [2022-12-13 13:42:07,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:42:07,015 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 52 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:42:07,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 18 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:42:07,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-12-13 13:42:07,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2022-12-13 13:42:07,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 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 13:42:07,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-12-13 13:42:07,020 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 18 [2022-12-13 13:42:07,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:42:07,021 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-12-13 13:42:07,021 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 13:42:07,021 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-12-13 13:42:07,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 13:42:07,021 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:42:07,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:42:07,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:42:07,022 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:42:07,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:42:07,022 INFO L85 PathProgramCache]: Analyzing trace with hash -933126362, now seen corresponding path program 1 times [2022-12-13 13:42:07,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:42:07,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486613287] [2022-12-13 13:42:07,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:42:07,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:42:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:42:08,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:42:08,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:42:08,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486613287] [2022-12-13 13:42:08,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486613287] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:42:08,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041207062] [2022-12-13 13:42:08,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:42:08,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:42:08,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:42:08,702 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:42:08,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:42:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:42:08,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 65 conjunts are in the unsatisfiable core [2022-12-13 13:42:08,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:42:08,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:42:08,913 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 13:42:08,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-12-13 13:42:08,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 13:42:09,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-12-13 13:42:09,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 33 [2022-12-13 13:42:09,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2022-12-13 13:42:09,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 35 [2022-12-13 13:42:09,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:42:09,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:42:10,584 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:42:10,585 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:42:10,586 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:42:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:42:10,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041207062] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:42:10,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:42:10,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 44 [2022-12-13 13:42:10,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70266559] [2022-12-13 13:42:10,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:42:10,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-13 13:42:10,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:42:10,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-13 13:42:10,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1623, Unknown=0, NotChecked=0, Total=1892 [2022-12-13 13:42:10,645 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 44 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 44 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:42:13,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:42:13,100 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2022-12-13 13:42:13,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 13:42:13,100 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 44 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-12-13 13:42:13,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:42:13,101 INFO L225 Difference]: With dead ends: 75 [2022-12-13 13:42:13,101 INFO L226 Difference]: Without dead ends: 73 [2022-12-13 13:42:13,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=670, Invalid=4160, Unknown=0, NotChecked=0, Total=4830 [2022-12-13 13:42:13,103 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 181 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 13:42:13,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 213 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 13:42:13,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-12-13 13:42:13,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54. [2022-12-13 13:42:13,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 53 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:42:13,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2022-12-13 13:42:13,112 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 28 [2022-12-13 13:42:13,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:42:13,112 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2022-12-13 13:42:13,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 44 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:42:13,112 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2022-12-13 13:42:13,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 13:42:13,113 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:42:13,113 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:42:13,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:42:13,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:42:13,314 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:42:13,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:42:13,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1642466588, now seen corresponding path program 2 times [2022-12-13 13:42:13,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:42:13,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405872096] [2022-12-13 13:42:13,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:42:13,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:42:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:42:13,400 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:42:13,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:42:13,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405872096] [2022-12-13 13:42:13,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405872096] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:42:13,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612236178] [2022-12-13 13:42:13,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:42:13,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:42:13,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:42:13,402 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:42:13,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 13:42:13,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:42:13,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:42:13,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 13:42:13,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:42:13,500 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:42:13,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:42:13,534 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:42:13,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612236178] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:42:13,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:42:13,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-12-13 13:42:13,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832563487] [2022-12-13 13:42:13,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:42:13,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 13:42:13,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:42:13,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 13:42:13,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-12-13 13:42:13,537 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:42:13,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:42:13,689 INFO L93 Difference]: Finished difference Result 136 states and 161 transitions. [2022-12-13 13:42:13,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:42:13,690 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 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 30 [2022-12-13 13:42:13,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:42:13,690 INFO L225 Difference]: With dead ends: 136 [2022-12-13 13:42:13,690 INFO L226 Difference]: Without dead ends: 78 [2022-12-13 13:42:13,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-12-13 13:42:13,691 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 57 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:42:13,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 57 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:42:13,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-12-13 13:42:13,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 56. [2022-12-13 13:42:13,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 55 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:42:13,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2022-12-13 13:42:13,700 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 30 [2022-12-13 13:42:13,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:42:13,700 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2022-12-13 13:42:13,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:42:13,701 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2022-12-13 13:42:13,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 13:42:13,701 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:42:13,701 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:42:13,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 13:42:13,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:42:13,902 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:42:13,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:42:13,903 INFO L85 PathProgramCache]: Analyzing trace with hash -396360796, now seen corresponding path program 3 times [2022-12-13 13:42:13,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:42:13,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038921420] [2022-12-13 13:42:13,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:42:13,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:42:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:42:14,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:42:14,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:42:14,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038921420] [2022-12-13 13:42:14,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038921420] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:42:14,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701751777] [2022-12-13 13:42:14,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:42:14,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:42:14,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:42:14,054 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:42:14,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 13:42:14,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 13:42:14,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:42:14,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 13:42:14,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:42:14,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:42:14,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:42:14,180 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:42:14,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701751777] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:42:14,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:42:14,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-12-13 13:42:14,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896682727] [2022-12-13 13:42:14,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:42:14,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 13:42:14,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:42:14,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 13:42:14,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-12-13 13:42:14,182 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 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 13:42:14,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:42:14,294 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2022-12-13 13:42:14,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:42:14,294 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 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) Word has length 30 [2022-12-13 13:42:14,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:42:14,295 INFO L225 Difference]: With dead ends: 74 [2022-12-13 13:42:14,295 INFO L226 Difference]: Without dead ends: 57 [2022-12-13 13:42:14,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-12-13 13:42:14,295 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 108 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:42:14,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 44 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:42:14,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-12-13 13:42:14,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 41. [2022-12-13 13:42:14,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:42:14,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2022-12-13 13:42:14,301 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 30 [2022-12-13 13:42:14,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:42:14,301 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2022-12-13 13:42:14,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 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 13:42:14,301 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2022-12-13 13:42:14,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-13 13:42:14,302 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:42:14,302 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:42:14,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 13:42:14,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:42:14,503 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:42:14,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:42:14,503 INFO L85 PathProgramCache]: Analyzing trace with hash 389318684, now seen corresponding path program 4 times [2022-12-13 13:42:14,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:42:14,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849587256] [2022-12-13 13:42:14,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:42:14,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:42:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:42:16,902 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:42:16,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:42:16,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849587256] [2022-12-13 13:42:16,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849587256] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:42:16,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375528597] [2022-12-13 13:42:16,903 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 13:42:16,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:42:16,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:42:16,904 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:42:16,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 13:42:16,977 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 13:42:16,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:42:16,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 89 conjunts are in the unsatisfiable core [2022-12-13 13:42:16,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:42:16,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-13 13:42:17,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:42:17,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 13:42:17,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-12-13 13:42:17,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:42:17,543 INFO L321 Elim1Store]: treesize reduction 91, result has 20.9 percent of original size [2022-12-13 13:42:17,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 51 [2022-12-13 13:42:17,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:42:17,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:42:17,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:42:17,771 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-12-13 13:42:17,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 66 [2022-12-13 13:42:18,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:42:18,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:42:18,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:42:18,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:42:18,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:42:18,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:42:18,283 INFO L321 Elim1Store]: treesize reduction 92, result has 17.9 percent of original size [2022-12-13 13:42:18,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 72 treesize of output 71 [2022-12-13 13:42:18,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:42:18,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:42:18,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:42:18,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:42:18,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:42:18,514 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-12-13 13:42:18,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 64 [2022-12-13 13:42:18,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:42:18,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:42:18,824 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:42:18,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:42:18,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:42:18,827 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:42:18,842 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-12-13 13:42:18,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 91 treesize of output 70 [2022-12-13 13:42:19,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:42:19,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:42:19,092 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:42:19,093 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:42:19,104 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-12-13 13:42:19,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 100 treesize of output 68 [2022-12-13 13:42:19,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:42:19,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:42:19,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:42:19,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:42:19,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:42:19,412 INFO L321 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2022-12-13 13:42:19,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 94 treesize of output 85 [2022-12-13 13:42:19,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:42:19,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:42:19,996 INFO L321 Elim1Store]: treesize reduction 370, result has 26.0 percent of original size [2022-12-13 13:42:19,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 155 treesize of output 225 [2022-12-13 13:42:26,063 INFO L321 Elim1Store]: treesize reduction 42, result has 63.5 percent of original size [2022-12-13 13:42:26,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 135 treesize of output 151 [2022-12-13 13:42:26,231 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:42:26,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:42:33,341 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:42:33,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375528597] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:42:33,342 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:42:33,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 79 [2022-12-13 13:42:33,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365851643] [2022-12-13 13:42:33,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:42:33,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-12-13 13:42:33,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:42:33,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-12-13 13:42:33,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=594, Invalid=5568, Unknown=0, NotChecked=0, Total=6162 [2022-12-13 13:42:33,345 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 79 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 79 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:42:47,060 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 170 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:44:01,457 WARN L233 SmtUtils]: Spent 47.33s on a formula simplification that was a NOOP. DAG size: 266 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:44:26,493 WARN L233 SmtUtils]: Spent 14.18s on a formula simplification that was a NOOP. DAG size: 199 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:44:56,616 WARN L233 SmtUtils]: Spent 9.73s on a formula simplification that was a NOOP. DAG size: 187 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:45:16,499 WARN L233 SmtUtils]: Spent 10.89s on a formula simplification that was a NOOP. DAG size: 190 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:45:51,177 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification that was a NOOP. DAG size: 174 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:46:12,647 WARN L233 SmtUtils]: Spent 7.12s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:48:03,884 WARN L233 SmtUtils]: Spent 1.07m on a formula simplification that was a NOOP. DAG size: 292 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:48:08,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 13:48:09,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 13:48:13,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:48:15,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 13:48:19,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 13:48:21,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 13:48:23,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 13:48:27,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 13:48:28,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 13:49:10,704 WARN L233 SmtUtils]: Spent 16.90s on a formula simplification that was a NOOP. DAG size: 215 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:49:23,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 13:51:39,525 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 220 DAG size of output: 148 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:51:52,387 WARN L233 SmtUtils]: Spent 5.42s on a formula simplification that was a NOOP. DAG size: 159 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:53:12,295 WARN L233 SmtUtils]: Spent 12.83s on a formula simplification. DAG size of input: 204 DAG size of output: 198 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:53:29,778 WARN L233 SmtUtils]: Spent 13.44s on a formula simplification. DAG size of input: 207 DAG size of output: 201 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:54:11,576 WARN L233 SmtUtils]: Spent 16.17s on a formula simplification. DAG size of input: 263 DAG size of output: 197 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:54:55,325 WARN L233 SmtUtils]: Spent 18.80s on a formula simplification. DAG size of input: 266 DAG size of output: 200 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:55:21,053 WARN L233 SmtUtils]: Spent 14.50s on a formula simplification. DAG size of input: 196 DAG size of output: 194 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:55:42,741 WARN L233 SmtUtils]: Spent 15.37s on a formula simplification. DAG size of input: 199 DAG size of output: 197 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 13:55:50,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:55:50,382 INFO L93 Difference]: Finished difference Result 191 states and 214 transitions. [2022-12-13 13:55:50,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-12-13 13:55:50,383 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 79 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-12-13 13:55:50,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:55:50,385 INFO L225 Difference]: With dead ends: 191 [2022-12-13 13:55:50,385 INFO L226 Difference]: Without dead ends: 189 [2022-12-13 13:55:50,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9724 ImplicationChecksByTransitivity, 718.8s TimeCoverageRelationStatistics Valid=2716, Invalid=27039, Unknown=1, NotChecked=0, Total=29756 [2022-12-13 13:55:50,392 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 372 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 1533 mSolverCounterSat, 283 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 1533 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.3s IncrementalHoareTripleChecker+Time [2022-12-13 13:55:50,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 427 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 1533 Invalid, 2 Unknown, 0 Unchecked, 89.3s Time] [2022-12-13 13:55:50,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-12-13 13:55:50,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 100. [2022-12-13 13:55:50,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 99 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:55:50,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2022-12-13 13:55:50,428 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 38 [2022-12-13 13:55:50,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:55:50,428 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2022-12-13 13:55:50,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 79 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:55:50,428 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2022-12-13 13:55:50,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-13 13:55:50,429 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:55:50,429 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:55:50,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 13:55:50,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 13:55:50,631 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:55:50,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:55:50,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1666934362, now seen corresponding path program 5 times [2022-12-13 13:55:50,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:55:50,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763208588] [2022-12-13 13:55:50,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:55:50,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:55:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:55:50,749 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 13:55:50,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:55:50,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763208588] [2022-12-13 13:55:50,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763208588] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:55:50,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653403210] [2022-12-13 13:55:50,750 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 13:55:50,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:55:50,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:55:50,751 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:55:50,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 13:55:50,899 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-13 13:55:50,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:55:50,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 13:55:50,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:55:50,979 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 13:55:50,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:55:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 13:55:51,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653403210] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:55:51,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:55:51,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-12-13 13:55:51,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421028984] [2022-12-13 13:55:51,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:55:51,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 13:55:51,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:55:51,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 13:55:51,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-12-13 13:55:51,050 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:55:51,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:55:51,514 INFO L93 Difference]: Finished difference Result 187 states and 215 transitions. [2022-12-13 13:55:51,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 13:55:51,515 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-12-13 13:55:51,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:55:51,516 INFO L225 Difference]: With dead ends: 187 [2022-12-13 13:55:51,516 INFO L226 Difference]: Without dead ends: 118 [2022-12-13 13:55:51,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 76 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=858, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 13:55:51,518 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 238 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 13:55:51,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 172 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 13:55:51,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-12-13 13:55:51,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 82. [2022-12-13 13:55:51,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 81 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:55:51,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2022-12-13 13:55:51,544 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 40 [2022-12-13 13:55:51,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:55:51,544 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2022-12-13 13:55:51,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:55:51,545 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2022-12-13 13:55:51,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 13:55:51,545 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:55:51,545 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:55:51,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 13:55:51,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 13:55:51,746 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:55:51,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:55:51,747 INFO L85 PathProgramCache]: Analyzing trace with hash -465930606, now seen corresponding path program 1 times [2022-12-13 13:55:51,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:55:51,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539256987] [2022-12-13 13:55:51,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:55:51,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:55:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:55:55,508 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:55:55,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:55:55,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539256987] [2022-12-13 13:55:55,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539256987] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:55:55,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838378888] [2022-12-13 13:55:55,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:55:55,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:55:55,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:55:55,509 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:55:55,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 13:55:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:55:55,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 67 conjunts are in the unsatisfiable core [2022-12-13 13:55:55,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:55:55,653 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 13:55:55,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 50 [2022-12-13 13:55:55,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 13:55:55,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:55:55,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 13:55:55,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-12-13 13:55:55,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-12-13 13:55:55,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-12-13 13:55:56,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-12-13 13:55:56,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-12-13 13:55:56,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:55:56,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-12-13 13:55:56,152 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:55:56,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:55:56,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-12-13 13:55:56,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:55:56,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 34 [2022-12-13 13:55:56,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 49 [2022-12-13 13:55:56,856 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 13:55:56,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:55:59,432 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_398 Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_398)))) (let ((.cse2 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse0 (+ v_ArrVal_398 (select .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|))) (.cse1 (+ (* c_~N~0 2) 1))) (or (not (= .cse0 .cse1)) (= (+ (select .cse2 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~a~0#1.offset| .cse0)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)) .cse1)))))) is different from false [2022-12-13 13:55:59,449 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:55:59,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 69 [2022-12-13 13:55:59,725 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse2 (+ (* c_~N~0 2) 1))) (or (= (+ (select .cse0 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select (select (store .cse1 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~a~0#1.offset| .cse2)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)) .cse2) (not (= (+ (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_1 |ULTIMATE.start_main_~#sum~0#1.offset|)) .cse2)))))) is different from false [2022-12-13 13:55:59,801 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_394 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_394) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse2 (+ (* c_~N~0 2) 1))) (or (= (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~a~0#1.offset| .cse2)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse1 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse2) (not (= (+ (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_1 |ULTIMATE.start_main_~#sum~0#1.offset|)) .cse2)))))) is different from false [2022-12-13 13:55:59,854 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_394 (Array Int Int))) (let ((.cse0 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_394) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse2 (+ (* c_~N~0 2) 1))) (or (= (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~a~0#1.offset| .cse2)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse1 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse2) (not (= (+ (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_1 |ULTIMATE.start_main_~#sum~0#1.offset|)) .cse2)))))) is different from false [2022-12-13 13:56:00,175 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_394 (Array Int Int))) (let ((.cse2 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) 8 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_394) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse1 (select .cse2 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse0 (+ (* c_~N~0 2) 1))) (or (= .cse0 (+ (select .cse1 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select (select (store .cse2 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~a~0#1.offset| .cse0)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|))) (not (= (+ (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_1 |ULTIMATE.start_main_~#sum~0#1.offset|)) .cse0)))))) is different from false [2022-12-13 13:56:00,188 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:56:00,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 152 treesize of output 97 [2022-12-13 13:56:00,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 669 treesize of output 649 [2022-12-13 13:56:00,213 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:56:00,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 426 treesize of output 412 [2022-12-13 13:56:00,233 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:56:00,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 656 treesize of output 578 [2022-12-13 13:56:00,284 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:56:00,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 601 treesize of output 641 [2022-12-13 13:56:01,119 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 11 not checked. [2022-12-13 13:56:01,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838378888] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:56:01,119 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:56:01,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 18, 18] total 65 [2022-12-13 13:56:01,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263134545] [2022-12-13 13:56:01,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:56:01,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-12-13 13:56:01,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:01,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-12-13 13:56:01,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=460, Invalid=3095, Unknown=5, NotChecked=600, Total=4160 [2022-12-13 13:56:01,123 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand has 65 states, 65 states have (on average 1.7076923076923076) internal successors, (111), 65 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:56:27,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:56:27,491 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2022-12-13 13:56:27,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-12-13 13:56:27,492 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.7076923076923076) internal successors, (111), 65 states have internal predecessors, (111), 0 states have call successors, (0), 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 42 [2022-12-13 13:56:27,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:56:27,493 INFO L225 Difference]: With dead ends: 116 [2022-12-13 13:56:27,493 INFO L226 Difference]: Without dead ends: 83 [2022-12-13 13:56:27,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 4011 ImplicationChecksByTransitivity, 30.1s TimeCoverageRelationStatistics Valid=1590, Invalid=11997, Unknown=5, NotChecked=1170, Total=14762 [2022-12-13 13:56:27,497 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 235 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 299 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:56:27,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 107 Invalid, 1627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1140 Invalid, 0 Unknown, 299 Unchecked, 1.2s Time] [2022-12-13 13:56:27,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-12-13 13:56:27,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 60. [2022-12-13 13:56:27,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1355932203389831) internal successors, (67), 59 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:56:27,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2022-12-13 13:56:27,515 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 42 [2022-12-13 13:56:27,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:56:27,515 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2022-12-13 13:56:27,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.7076923076923076) internal successors, (111), 65 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:56:27,515 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2022-12-13 13:56:27,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-13 13:56:27,515 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:56:27,515 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:27,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 13:56:27,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 13:56:27,716 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:56:27,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:27,716 INFO L85 PathProgramCache]: Analyzing trace with hash 383514002, now seen corresponding path program 6 times [2022-12-13 13:56:27,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:27,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262401340] [2022-12-13 13:56:27,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:27,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:31,193 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:56:31,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:31,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262401340] [2022-12-13 13:56:31,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262401340] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:56:31,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728749242] [2022-12-13 13:56:31,193 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 13:56:31,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:56:31,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:56:31,194 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:56:31,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f83601ef-5d5f-4355-b1be-eb5d0f778fcb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 13:56:31,333 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-13 13:56:31,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:56:31,335 WARN L261 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 123 conjunts are in the unsatisfiable core [2022-12-13 13:56:31,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:56:31,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:31,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-12-13 13:56:31,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:56:31,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:31,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 13:56:31,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:31,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:31,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-13 13:56:31,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:31,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:31,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:31,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2022-12-13 13:56:32,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:32,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:32,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:32,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:32,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 52 [2022-12-13 13:56:32,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:32,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:32,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:32,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:32,594 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-12-13 13:56:32,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 66 [2022-12-13 13:56:32,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:32,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:32,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:32,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:32,873 INFO L321 Elim1Store]: treesize reduction 31, result has 18.4 percent of original size [2022-12-13 13:56:32,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 81 [2022-12-13 13:56:33,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:33,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:33,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:56:33,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:33,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:33,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:33,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:33,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 90 [2022-12-13 13:56:33,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:33,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:33,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:33,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:33,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:33,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:33,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:33,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:56:33,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 93 [2022-12-13 13:56:34,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:34,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:34,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:34,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:34,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:34,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:34,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 88 [2022-12-13 13:56:34,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:34,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:34,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:34,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:34,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:34,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:34,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 88 [2022-12-13 13:56:35,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:35,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:35,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:35,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:35,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:35,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:35,054 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-12-13 13:56:35,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 99 [2022-12-13 13:56:35,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:35,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:35,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:35,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:35,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:35,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:35,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:35,534 INFO L321 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2022-12-13 13:56:35,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 11 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 5 case distinctions, treesize of input 108 treesize of output 108 [2022-12-13 13:56:36,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:36,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:36,550 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:56:36,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:36,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:36,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:36,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:36,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:36,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:36,556 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:56:36,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:36,558 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:56:36,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 9 disjoint index pairs (out of 45 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 94 [2022-12-13 13:56:36,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:36,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:36,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:36,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:36,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:36,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:36,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:36,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:36,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:37,000 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:56:37,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:37,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:56:37,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:56:37,010 INFO L321 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2022-12-13 13:56:37,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 87 treesize of output 87 [2022-12-13 13:56:37,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:37,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:37,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:37,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:37,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:37,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:37,444 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:56:37,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:37,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:56:37,454 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-12-13 13:56:37,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 78 treesize of output 75 [2022-12-13 13:56:38,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:38,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:38,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:38,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:38,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:56:38,262 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 13:56:38,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 44 [2022-12-13 13:56:38,340 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:56:38,340 INFO L328 TraceCheckSpWp]: Computing backward predicates...