./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-buckets-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-buckets-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN --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 5a4c2149f6fe1f453f0ff04220f5041f2227f6654d0fa84d48205415ce284fcb --- 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-6b4ec56 [2022-11-20 10:35:54,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:35:54,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:35:54,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:35:54,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:35:54,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:35:54,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:35:54,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:35:54,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:35:54,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:35:54,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:35:54,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:35:54,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:35:54,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:35:54,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:35:54,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:35:54,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:35:54,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:35:54,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:35:54,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:35:54,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:35:54,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:35:54,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:35:54,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:35:55,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:35:55,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:35:55,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:35:55,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:35:55,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:35:55,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:35:55,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:35:55,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:35:55,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:35:55,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:35:55,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:35:55,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:35:55,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:35:55,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:35:55,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:35:55,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:35:55,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:35:55,027 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:35:55,066 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:35:55,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:35:55,072 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:35:55,072 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:35:55,073 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:35:55,073 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:35:55,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:35:55,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:35:55,075 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:35:55,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:35:55,077 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:35:55,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:35:55,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:35:55,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:35:55,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:35:55,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:35:55,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:35:55,079 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:35:55,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:35:55,080 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:35:55,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:35:55,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:35:55,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:35:55,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:35:55,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:35:55,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:35:55,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:35:55,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:35:55,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:35:55,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:35:55,085 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:35:55,085 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:35:55,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:35:55,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a4c2149f6fe1f453f0ff04220f5041f2227f6654d0fa84d48205415ce284fcb [2022-11-20 10:35:55,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:35:55,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:35:55,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:35:55,472 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:35:55,473 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:35:55,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/forester-heap/sll-buckets-2.i [2022-11-20 10:35:58,846 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:35:59,163 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:35:59,164 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/sv-benchmarks/c/forester-heap/sll-buckets-2.i [2022-11-20 10:35:59,177 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/data/373437421/ebd73ef606f645d7a7cc557f1b445a80/FLAG1ca1b891b [2022-11-20 10:35:59,193 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/data/373437421/ebd73ef606f645d7a7cc557f1b445a80 [2022-11-20 10:35:59,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:35:59,197 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:35:59,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:35:59,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:35:59,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:35:59,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:35:59" (1/1) ... [2022-11-20 10:35:59,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f2f1343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:59, skipping insertion in model container [2022-11-20 10:35:59,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:35:59" (1/1) ... [2022-11-20 10:35:59,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:35:59,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:35:59,718 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_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22663,22676] [2022-11-20 10:35:59,724 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_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22734,22747] [2022-11-20 10:35:59,726 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_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22862,22875] [2022-11-20 10:35:59,731 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_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23275,23288] [2022-11-20 10:35:59,732 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_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23364,23377] [2022-11-20 10:35:59,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:35:59,747 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:35:59,791 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_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22663,22676] [2022-11-20 10:35:59,793 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_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22734,22747] [2022-11-20 10:35:59,794 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_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22862,22875] [2022-11-20 10:35:59,798 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_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23275,23288] [2022-11-20 10:35:59,799 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_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23364,23377] [2022-11-20 10:35:59,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:35:59,830 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:35:59,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:59 WrapperNode [2022-11-20 10:35:59,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:35:59,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:35:59,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:35:59,833 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:35:59,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:59" (1/1) ... [2022-11-20 10:35:59,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:59" (1/1) ... [2022-11-20 10:35:59,884 INFO L138 Inliner]: procedures = 119, calls = 42, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 155 [2022-11-20 10:35:59,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:35:59,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:35:59,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:35:59,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:35:59,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:59" (1/1) ... [2022-11-20 10:35:59,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:59" (1/1) ... [2022-11-20 10:35:59,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:59" (1/1) ... [2022-11-20 10:35:59,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:59" (1/1) ... [2022-11-20 10:35:59,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:59" (1/1) ... [2022-11-20 10:35:59,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:59" (1/1) ... [2022-11-20 10:35:59,917 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:59" (1/1) ... [2022-11-20 10:35:59,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:59" (1/1) ... [2022-11-20 10:35:59,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:35:59,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:35:59,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:35:59,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:35:59,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:59" (1/1) ... [2022-11-20 10:35:59,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:35:59,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:35:59,964 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:35:59,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:36:00,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:36:00,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:36:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:36:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:36:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 10:36:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 10:36:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:36:00,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:36:00,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:36:00,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:36:00,161 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:36:00,171 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:36:00,693 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:36:00,700 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:36:00,701 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-20 10:36:00,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:36:00 BoogieIcfgContainer [2022-11-20 10:36:00,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:36:00,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:36:00,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:36:00,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:36:00,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:35:59" (1/3) ... [2022-11-20 10:36:00,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504e4a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:36:00, skipping insertion in model container [2022-11-20 10:36:00,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:35:59" (2/3) ... [2022-11-20 10:36:00,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504e4a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:36:00, skipping insertion in model container [2022-11-20 10:36:00,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:36:00" (3/3) ... [2022-11-20 10:36:00,714 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-buckets-2.i [2022-11-20 10:36:00,739 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:36:00,739 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-11-20 10:36:00,796 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:36:00,804 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;@690250a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:36:00,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-20 10:36:00,810 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 38 states have (on average 1.868421052631579) internal successors, (71), 43 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:00,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 10:36:00,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:00,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:00,821 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 10:36:00,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:00,827 INFO L85 PathProgramCache]: Analyzing trace with hash 179510098, now seen corresponding path program 1 times [2022-11-20 10:36:00,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:00,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838048863] [2022-11-20 10:36:00,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:00,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:01,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:01,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:01,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838048863] [2022-11-20 10:36:01,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838048863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:01,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:01,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:36:01,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70742720] [2022-11-20 10:36:01,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:01,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:36:01,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:01,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:36:01,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:36:01,470 INFO L87 Difference]: Start difference. First operand has 44 states, 38 states have (on average 1.868421052631579) internal successors, (71), 43 states have internal predecessors, (71), 0 states have call successors, (0), 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 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:01,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:01,664 INFO L93 Difference]: Finished difference Result 112 states and 188 transitions. [2022-11-20 10:36:01,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:36:01,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-11-20 10:36:01,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:01,691 INFO L225 Difference]: With dead ends: 112 [2022-11-20 10:36:01,692 INFO L226 Difference]: Without dead ends: 66 [2022-11-20 10:36:01,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:36:01,703 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 94 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:01,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 84 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:36:01,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-20 10:36:01,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 41. [2022-11-20 10:36:01,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:01,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2022-11-20 10:36:01,775 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 8 [2022-11-20 10:36:01,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:01,776 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2022-11-20 10:36:01,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:01,777 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2022-11-20 10:36:01,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 10:36:01,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:01,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:01,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:36:01,778 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 10:36:01,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:01,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1306111283, now seen corresponding path program 1 times [2022-11-20 10:36:01,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:01,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194384853] [2022-11-20 10:36:01,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:01,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:02,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:02,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:02,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194384853] [2022-11-20 10:36:02,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194384853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:02,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:02,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:36:02,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849931219] [2022-11-20 10:36:02,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:02,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:36:02,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:02,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:36:02,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:36:02,029 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:02,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:02,098 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2022-11-20 10:36:02,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:36:02,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 10:36:02,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:02,101 INFO L225 Difference]: With dead ends: 45 [2022-11-20 10:36:02,103 INFO L226 Difference]: Without dead ends: 43 [2022-11-20 10:36:02,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:36:02,106 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:02,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 68 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:36:02,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-20 10:36:02,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2022-11-20 10:36:02,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:02,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2022-11-20 10:36:02,120 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 9 [2022-11-20 10:36:02,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:02,121 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2022-11-20 10:36:02,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:02,122 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2022-11-20 10:36:02,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 10:36:02,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:02,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:02,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:36:02,123 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 10:36:02,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:02,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1834780084, now seen corresponding path program 1 times [2022-11-20 10:36:02,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:02,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116202021] [2022-11-20 10:36:02,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:02,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:03,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:03,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:03,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116202021] [2022-11-20 10:36:03,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116202021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:03,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:03,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:36:03,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671033313] [2022-11-20 10:36:03,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:03,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:36:03,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:03,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:36:03,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:36:03,099 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:03,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:03,350 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2022-11-20 10:36:03,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:36:03,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-11-20 10:36:03,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:03,353 INFO L225 Difference]: With dead ends: 61 [2022-11-20 10:36:03,353 INFO L226 Difference]: Without dead ends: 50 [2022-11-20 10:36:03,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:36:03,355 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 32 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:03,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 94 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:36:03,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-20 10:36:03,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2022-11-20 10:36:03,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 43 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:03,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2022-11-20 10:36:03,377 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 10 [2022-11-20 10:36:03,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:03,378 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2022-11-20 10:36:03,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:03,378 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2022-11-20 10:36:03,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 10:36:03,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:03,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:03,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:36:03,380 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 10:36:03,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:03,384 INFO L85 PathProgramCache]: Analyzing trace with hash 710639734, now seen corresponding path program 1 times [2022-11-20 10:36:03,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:03,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163317646] [2022-11-20 10:36:03,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:03,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:03,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:03,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:03,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163317646] [2022-11-20 10:36:03,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163317646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:03,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:36:03,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:36:03,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057143234] [2022-11-20 10:36:03,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:03,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:36:03,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:03,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:36:03,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:36:03,485 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:03,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:03,601 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2022-11-20 10:36:03,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:36:03,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-11-20 10:36:03,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:03,603 INFO L225 Difference]: With dead ends: 45 [2022-11-20 10:36:03,605 INFO L226 Difference]: Without dead ends: 43 [2022-11-20 10:36:03,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:36:03,606 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 22 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:03,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 51 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:36:03,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-20 10:36:03,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2022-11-20 10:36:03,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.275) internal successors, (51), 41 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:03,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2022-11-20 10:36:03,625 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 10 [2022-11-20 10:36:03,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:03,626 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2022-11-20 10:36:03,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:03,626 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2022-11-20 10:36:03,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 10:36:03,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:03,629 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:03,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:36:03,629 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 10:36:03,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:03,631 INFO L85 PathProgramCache]: Analyzing trace with hash 625501225, now seen corresponding path program 1 times [2022-11-20 10:36:03,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:03,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56040696] [2022-11-20 10:36:03,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:03,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:05,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:05,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:05,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56040696] [2022-11-20 10:36:05,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56040696] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:05,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390919139] [2022-11-20 10:36:05,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:05,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:05,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:05,156 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:36:05,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:36:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:05,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-20 10:36:05,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:05,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:05,483 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 32 [2022-11-20 10:36:05,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:05,503 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 36 [2022-11-20 10:36:05,554 INFO L321 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2022-11-20 10:36:05,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 74 [2022-11-20 10:36:05,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 23 [2022-11-20 10:36:05,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:05,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:05,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:05,581 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 27 treesize of output 31 [2022-11-20 10:36:05,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 23 [2022-11-20 10:36:05,613 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 10:36:05,613 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 35 treesize of output 27 [2022-11-20 10:36:05,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:05,797 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 43 treesize of output 48 [2022-11-20 10:36:05,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:05,807 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:36:05,820 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 10:36:05,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 64 treesize of output 51 [2022-11-20 10:36:06,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:06,020 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:36:06,023 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:36:06,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 44 [2022-11-20 10:36:06,042 INFO L321 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-11-20 10:36:06,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 21 [2022-11-20 10:36:06,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:06,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:06,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:06,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390919139] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:36:06,394 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:36:06,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-20 10:36:06,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044349680] [2022-11-20 10:36:06,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:36:06,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:36:06,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:06,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:36:06,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:36:06,397 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 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) [2022-11-20 10:36:07,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:07,157 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2022-11-20 10:36:07,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:36:07,158 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-20 10:36:07,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:07,159 INFO L225 Difference]: With dead ends: 74 [2022-11-20 10:36:07,159 INFO L226 Difference]: Without dead ends: 63 [2022-11-20 10:36:07,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2022-11-20 10:36:07,161 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 43 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:07,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 277 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 202 Invalid, 0 Unknown, 28 Unchecked, 0.4s Time] [2022-11-20 10:36:07,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-20 10:36:07,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 47. [2022-11-20 10:36:07,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 46 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:07,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2022-11-20 10:36:07,175 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 15 [2022-11-20 10:36:07,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:07,176 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2022-11-20 10:36:07,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 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) [2022-11-20 10:36:07,177 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2022-11-20 10:36:07,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 10:36:07,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:07,178 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:07,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:07,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:07,385 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 10:36:07,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:07,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1157082046, now seen corresponding path program 1 times [2022-11-20 10:36:07,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:07,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926963611] [2022-11-20 10:36:07,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:07,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:08,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:08,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:08,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926963611] [2022-11-20 10:36:08,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926963611] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:08,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835627226] [2022-11-20 10:36:08,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:08,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:08,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:08,136 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:36:08,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:36:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:08,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-20 10:36:08,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:08,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:08,371 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2022-11-20 10:36:08,410 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2022-11-20 10:36:08,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 71 [2022-11-20 10:36:08,471 INFO L321 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2022-11-20 10:36:08,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 46 [2022-11-20 10:36:08,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:08,559 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 41 treesize of output 37 [2022-11-20 10:36:08,584 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-11-20 10:36:08,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 10:36:08,645 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 40 treesize of output 36 [2022-11-20 10:36:08,779 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:36:08,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 15 [2022-11-20 10:36:08,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:08,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:08,875 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~item~0#1.base_22| Int) (v_ArrVal_671 (Array Int Int))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~item~0#1.base_22| v_ArrVal_671) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|) 0)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~item~0#1.base_22|) 0)))) is different from false [2022-11-20 10:36:08,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:08,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835627226] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:36:08,912 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:36:08,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2022-11-20 10:36:08,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652365861] [2022-11-20 10:36:08,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:36:08,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 10:36:08,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:08,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 10:36:08,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=5, NotChecked=20, Total=156 [2022-11-20 10:36:08,915 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:09,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:09,863 INFO L93 Difference]: Finished difference Result 155 states and 194 transitions. [2022-11-20 10:36:09,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 10:36:09,864 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-20 10:36:09,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:09,865 INFO L225 Difference]: With dead ends: 155 [2022-11-20 10:36:09,865 INFO L226 Difference]: Without dead ends: 153 [2022-11-20 10:36:09,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=285, Unknown=5, NotChecked=38, Total=462 [2022-11-20 10:36:09,866 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 263 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:09,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 390 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 297 Invalid, 0 Unknown, 127 Unchecked, 0.6s Time] [2022-11-20 10:36:09,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-20 10:36:09,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 71. [2022-11-20 10:36:09,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 69 states have (on average 1.2753623188405796) internal successors, (88), 70 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) [2022-11-20 10:36:09,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2022-11-20 10:36:09,888 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 16 [2022-11-20 10:36:09,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:09,888 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2022-11-20 10:36:09,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:09,889 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2022-11-20 10:36:09,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 10:36:09,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:09,890 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:09,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:10,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:10,097 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 10:36:10,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:10,098 INFO L85 PathProgramCache]: Analyzing trace with hash 442135079, now seen corresponding path program 2 times [2022-11-20 10:36:10,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:10,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399766098] [2022-11-20 10:36:10,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:10,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:10,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:10,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:10,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399766098] [2022-11-20 10:36:10,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399766098] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:10,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512994006] [2022-11-20 10:36:10,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:36:10,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:11,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:11,001 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:36:11,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:36:11,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:36:11,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:36:11,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-20 10:36:11,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:11,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:11,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:11,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 27 treesize of output 35 [2022-11-20 10:36:11,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:11,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:11,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:11,703 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 19 treesize of output 23 [2022-11-20 10:36:11,737 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-11-20 10:36:11,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 34 [2022-11-20 10:36:11,875 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-20 10:36:11,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-11-20 10:36:11,885 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 16 treesize of output 18 [2022-11-20 10:36:11,930 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 [2022-11-20 10:36:12,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-20 10:36:12,114 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:36:12,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:36:12,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512994006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:36:12,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:36:12,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-11-20 10:36:12,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280400970] [2022-11-20 10:36:12,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:36:12,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:36:12,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:12,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:36:12,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:36:12,122 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:12,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:12,563 INFO L93 Difference]: Finished difference Result 138 states and 171 transitions. [2022-11-20 10:36:12,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:36:12,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 10:36:12,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:12,565 INFO L225 Difference]: With dead ends: 138 [2022-11-20 10:36:12,566 INFO L226 Difference]: Without dead ends: 103 [2022-11-20 10:36:12,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:36:12,567 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 66 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:12,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 137 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 83 Invalid, 0 Unknown, 34 Unchecked, 0.3s Time] [2022-11-20 10:36:12,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-20 10:36:12,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 78. [2022-11-20 10:36:12,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 76 states have (on average 1.25) internal successors, (95), 77 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:12,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 95 transitions. [2022-11-20 10:36:12,611 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 95 transitions. Word has length 18 [2022-11-20 10:36:12,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:12,611 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 95 transitions. [2022-11-20 10:36:12,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:12,612 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 95 transitions. [2022-11-20 10:36:12,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 10:36:12,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:12,618 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:12,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:12,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:12,827 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 10:36:12,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:12,833 INFO L85 PathProgramCache]: Analyzing trace with hash -482453053, now seen corresponding path program 1 times [2022-11-20 10:36:12,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:12,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593494782] [2022-11-20 10:36:12,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:12,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:13,754 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:13,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:13,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593494782] [2022-11-20 10:36:13,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593494782] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:13,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047873708] [2022-11-20 10:36:13,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:13,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:13,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:13,759 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:36:13,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:36:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:13,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-20 10:36:13,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:14,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:14,036 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 32 [2022-11-20 10:36:14,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:14,050 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 32 [2022-11-20 10:36:14,092 INFO L321 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2022-11-20 10:36:14,092 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 81 [2022-11-20 10:36:14,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:14,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:14,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:14,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-20 10:36:14,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 23 [2022-11-20 10:36:14,160 INFO L321 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2022-11-20 10:36:14,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 46 [2022-11-20 10:36:14,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2022-11-20 10:36:14,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:14,317 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 10:36:14,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 102 treesize of output 78 [2022-11-20 10:36:14,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:14,352 INFO L321 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-11-20 10:36:14,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 33 treesize of output 37 [2022-11-20 10:36:14,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:14,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 35 [2022-11-20 10:36:14,495 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 10:36:14,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 76 [2022-11-20 10:36:14,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:14,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 35 [2022-11-20 10:36:14,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:14,754 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 37 treesize of output 13 [2022-11-20 10:36:14,833 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 10:36:14,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 26 [2022-11-20 10:36:14,842 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:14,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:14,945 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1043 (Array Int Int)) (v_ArrVal_1042 (Array Int Int))) (not (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1043))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1042) |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|)) 0))) is different from false [2022-11-20 10:36:15,095 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:15,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047873708] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:36:15,096 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:36:15,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-11-20 10:36:15,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323879970] [2022-11-20 10:36:15,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:36:15,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:36:15,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:15,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:36:15,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=221, Unknown=2, NotChecked=30, Total=306 [2022-11-20 10:36:15,099 INFO L87 Difference]: Start difference. First operand 78 states and 95 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:20,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:20,934 INFO L93 Difference]: Finished difference Result 155 states and 191 transitions. [2022-11-20 10:36:20,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 10:36:20,935 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-20 10:36:20,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:20,936 INFO L225 Difference]: With dead ends: 155 [2022-11-20 10:36:20,937 INFO L226 Difference]: Without dead ends: 153 [2022-11-20 10:36:20,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=265, Invalid=927, Unknown=2, NotChecked=66, Total=1260 [2022-11-20 10:36:20,938 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 327 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:20,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 218 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 248 Invalid, 0 Unknown, 143 Unchecked, 0.6s Time] [2022-11-20 10:36:20,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-20 10:36:20,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 100. [2022-11-20 10:36:20,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 98 states have (on average 1.2551020408163265) internal successors, (123), 99 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:20,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 123 transitions. [2022-11-20 10:36:20,982 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 123 transitions. Word has length 19 [2022-11-20 10:36:20,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:20,982 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 123 transitions. [2022-11-20 10:36:20,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:20,983 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 123 transitions. [2022-11-20 10:36:20,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 10:36:20,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:20,984 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:20,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:21,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:21,192 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 10:36:21,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:21,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1136543444, now seen corresponding path program 2 times [2022-11-20 10:36:21,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:21,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650845343] [2022-11-20 10:36:21,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:21,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:23,060 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:23,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:23,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650845343] [2022-11-20 10:36:23,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650845343] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:23,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498805960] [2022-11-20 10:36:23,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:36:23,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:23,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:23,068 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:36:23,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:36:23,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:36:23,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:36:23,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-20 10:36:23,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:23,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:23,635 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 38 [2022-11-20 10:36:23,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:23,647 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 42 [2022-11-20 10:36:23,690 INFO L321 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2022-11-20 10:36:23,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 79 [2022-11-20 10:36:23,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:23,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:23,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:23,705 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 42 treesize of output 44 [2022-11-20 10:36:23,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 23 [2022-11-20 10:36:23,724 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-11-20 10:36:23,725 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 59 treesize of output 43 [2022-11-20 10:36:23,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 19 treesize of output 31 [2022-11-20 10:36:23,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 19 treesize of output 31 [2022-11-20 10:36:23,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 23 [2022-11-20 10:36:23,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:23,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:36:23,990 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 10:36:23,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 94 treesize of output 69 [2022-11-20 10:36:24,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:24,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:24,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 69 [2022-11-20 10:36:24,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:24,284 INFO L321 Elim1Store]: treesize reduction 56, result has 16.4 percent of original size [2022-11-20 10:36:24,285 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 2 case distinctions, treesize of input 65 treesize of output 58 [2022-11-20 10:36:24,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:24,295 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:36:24,308 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 10:36:24,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 90 treesize of output 65 [2022-11-20 10:36:24,614 INFO L321 Elim1Store]: treesize reduction 33, result has 19.5 percent of original size [2022-11-20 10:36:24,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 120 treesize of output 64 [2022-11-20 10:36:24,631 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 10:36:24,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 21 [2022-11-20 10:36:24,640 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:24,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:29,392 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~bucket~0#1.base|))) (let ((.cse5 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~bucket~0#1.base|)) (.cse4 (select .cse7 |c_ULTIMATE.start_main_~bucket~0#1.offset|))) (let ((.cse3 (+ .cse4 4)) (.cse1 (select .cse5 |c_ULTIMATE.start_main_~bucket~0#1.offset|)) (.cse6 (+ |c_ULTIMATE.start_main_~bucket~0#1.offset| 4))) (and (forall ((v_ArrVal_1253 Int) (v_ArrVal_1248 Int) (v_ArrVal_1247 Int)) (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~bucket~0#1.base| (store .cse5 .cse6 v_ArrVal_1247)))) (let ((.cse2 (select .cse0 .cse1))) (select (store .cse0 .cse1 (store .cse2 .cse3 v_ArrVal_1253)) (select .cse2 .cse4)))) (+ 4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~bucket~0#1.base| (store .cse7 .cse6 v_ArrVal_1248)) .cse1) .cse4))) 0)) (forall ((v_ArrVal_1254 Int) (v_ArrVal_1248 Int) (v_ArrVal_1247 Int)) (= (let ((.cse8 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~bucket~0#1.base| (store .cse7 .cse6 v_ArrVal_1248)))) (let ((.cse9 (select .cse8 .cse1))) (select (select (store .cse8 .cse1 (store .cse9 .cse3 v_ArrVal_1254)) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~bucket~0#1.base| (store .cse5 .cse6 v_ArrVal_1247)) .cse1) .cse4)) (+ 4 (select .cse9 .cse4))))) 0)))))) is different from false [2022-11-20 10:36:29,478 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:29,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498805960] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:36:29,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:36:29,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2022-11-20 10:36:29,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143119653] [2022-11-20 10:36:29,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:36:29,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 10:36:29,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:29,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 10:36:29,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=314, Unknown=2, NotChecked=36, Total=420 [2022-11-20 10:36:29,482 INFO L87 Difference]: Start difference. First operand 100 states and 123 transitions. Second operand has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:30,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:30,762 INFO L93 Difference]: Finished difference Result 131 states and 160 transitions. [2022-11-20 10:36:30,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 10:36:30,763 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 0 states have call successors, (0), 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 20 [2022-11-20 10:36:30,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:30,764 INFO L225 Difference]: With dead ends: 131 [2022-11-20 10:36:30,764 INFO L226 Difference]: Without dead ends: 120 [2022-11-20 10:36:30,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=111, Invalid=491, Unknown=2, NotChecked=46, Total=650 [2022-11-20 10:36:30,766 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 49 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:30,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 246 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 188 Invalid, 0 Unknown, 115 Unchecked, 0.7s Time] [2022-11-20 10:36:30,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-20 10:36:30,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 105. [2022-11-20 10:36:30,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 103 states have (on average 1.2427184466019416) internal successors, (128), 104 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:30,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 128 transitions. [2022-11-20 10:36:30,799 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 128 transitions. Word has length 20 [2022-11-20 10:36:30,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:30,799 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 128 transitions. [2022-11-20 10:36:30,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:30,800 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 128 transitions. [2022-11-20 10:36:30,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-20 10:36:30,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:30,801 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:30,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:31,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:31,009 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 10:36:31,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:31,010 INFO L85 PathProgramCache]: Analyzing trace with hash 220535656, now seen corresponding path program 2 times [2022-11-20 10:36:31,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:31,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390025470] [2022-11-20 10:36:31,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:31,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:32,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:36:32,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:32,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390025470] [2022-11-20 10:36:32,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390025470] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:32,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470060105] [2022-11-20 10:36:32,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:36:32,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:32,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:32,004 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:36:32,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:36:32,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:36:32,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:36:32,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 74 conjunts are in the unsatisfiable core [2022-11-20 10:36:32,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:32,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:32,809 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 32 [2022-11-20 10:36:32,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:32,823 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2022-11-20 10:36:32,870 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2022-11-20 10:36:32,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 104 treesize of output 99 [2022-11-20 10:36:32,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 28 treesize of output 40 [2022-11-20 10:36:32,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:32,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:32,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:32,900 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 27 treesize of output 31 [2022-11-20 10:36:32,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 23 [2022-11-20 10:36:32,972 INFO L321 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2022-11-20 10:36:32,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 46 [2022-11-20 10:36:32,984 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 18 treesize of output 20 [2022-11-20 10:36:33,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:33,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:33,090 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 36 treesize of output 35 [2022-11-20 10:36:33,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:33,101 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 57 treesize of output 51 [2022-11-20 10:36:33,134 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-20 10:36:33,135 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 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-20 10:36:33,174 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-11-20 10:36:33,175 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 20 treesize of output 22 [2022-11-20 10:36:33,294 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 56 treesize of output 50 [2022-11-20 10:36:33,301 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 25 treesize of output 24 [2022-11-20 10:36:33,316 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 36 treesize of output 35 [2022-11-20 10:36:33,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 57 treesize of output 33 [2022-11-20 10:36:33,787 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:36:33,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 13 [2022-11-20 10:36:33,862 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:36:33,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:34,099 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:36:34,100 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 31 treesize of output 35 [2022-11-20 10:36:34,241 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:36:34,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470060105] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:36:34,242 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:36:34,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-11-20 10:36:34,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699501244] [2022-11-20 10:36:34,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:36:34,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:36:34,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:34,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:36:34,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=249, Unknown=7, NotChecked=0, Total=306 [2022-11-20 10:36:34,244 INFO L87 Difference]: Start difference. First operand 105 states and 128 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 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) [2022-11-20 10:36:35,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:35,702 INFO L93 Difference]: Finished difference Result 200 states and 247 transitions. [2022-11-20 10:36:35,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:36:35,703 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-20 10:36:35,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:35,704 INFO L225 Difference]: With dead ends: 200 [2022-11-20 10:36:35,705 INFO L226 Difference]: Without dead ends: 165 [2022-11-20 10:36:35,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=192, Invalid=671, Unknown=7, NotChecked=0, Total=870 [2022-11-20 10:36:35,706 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 201 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:35,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 253 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 301 Invalid, 0 Unknown, 60 Unchecked, 0.7s Time] [2022-11-20 10:36:35,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-20 10:36:35,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 114. [2022-11-20 10:36:35,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 1.2321428571428572) internal successors, (138), 113 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:35,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 138 transitions. [2022-11-20 10:36:35,738 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 138 transitions. Word has length 21 [2022-11-20 10:36:35,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:35,739 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 138 transitions. [2022-11-20 10:36:35,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 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) [2022-11-20 10:36:35,740 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 138 transitions. [2022-11-20 10:36:35,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-20 10:36:35,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:35,741 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:35,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-20 10:36:35,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 10:36:35,949 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 10:36:35,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:35,950 INFO L85 PathProgramCache]: Analyzing trace with hash -800532698, now seen corresponding path program 1 times [2022-11-20 10:36:35,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:35,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728086397] [2022-11-20 10:36:35,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:35,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:37,146 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:37,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:37,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728086397] [2022-11-20 10:36:37,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728086397] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:37,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424436910] [2022-11-20 10:36:37,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:37,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:36:37,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:36:37,152 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:36:37,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 10:36:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:36:37,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-20 10:36:37,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:36:37,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:37,482 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 32 [2022-11-20 10:36:37,537 INFO L321 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2022-11-20 10:36:37,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 94 [2022-11-20 10:36:37,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:37,550 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 36 [2022-11-20 10:36:37,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:37,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:37,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:37,568 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 36 treesize of output 38 [2022-11-20 10:36:37,624 INFO L321 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2022-11-20 10:36:37,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 46 [2022-11-20 10:36:37,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2022-11-20 10:36:37,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 46 [2022-11-20 10:36:37,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 23 [2022-11-20 10:36:37,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:37,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:37,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:37,827 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 45 treesize of output 42 [2022-11-20 10:36:37,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:37,867 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 10:36:37,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 76 [2022-11-20 10:36:37,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:37,907 INFO L321 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-11-20 10:36:37,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 37 [2022-11-20 10:36:37,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-20 10:36:38,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:36:38,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 42 [2022-11-20 10:36:38,093 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 10:36:38,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 74 [2022-11-20 10:36:38,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-20 10:36:38,770 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-11-20 10:36:38,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 62 [2022-11-20 10:36:38,792 INFO L321 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-11-20 10:36:38,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 22 [2022-11-20 10:36:38,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-11-20 10:36:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:38,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:39,080 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1655 (Array Int Int)) (v_ArrVal_1654 (Array Int Int)) (|ULTIMATE.start_main_~item~0#1.offset| Int)) (= (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1655)) (.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1654))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|)) (.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |ULTIMATE.start_main_~item~0#1.offset|) 2)) (select (select .cse0 .cse1) .cse2)) (+ 8 (select (select .cse3 .cse1) .cse2))))) 2)) is different from false [2022-11-20 10:36:39,102 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:36:39,103 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 59 treesize of output 63 [2022-11-20 10:36:39,298 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:39,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424436910] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:36:39,298 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:36:39,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-11-20 10:36:39,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698842900] [2022-11-20 10:36:39,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:36:39,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:36:39,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:39,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:36:39,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=402, Unknown=1, NotChecked=40, Total=506 [2022-11-20 10:36:39,301 INFO L87 Difference]: Start difference. First operand 114 states and 138 transitions. Second operand has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:41,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:36:41,884 INFO L93 Difference]: Finished difference Result 261 states and 322 transitions. [2022-11-20 10:36:41,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:36:41,885 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-20 10:36:41,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:36:41,886 INFO L225 Difference]: With dead ends: 261 [2022-11-20 10:36:41,886 INFO L226 Difference]: Without dead ends: 226 [2022-11-20 10:36:41,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=240, Invalid=1023, Unknown=1, NotChecked=68, Total=1332 [2022-11-20 10:36:41,888 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 255 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 126 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:36:41,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 425 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 620 Invalid, 0 Unknown, 126 Unchecked, 1.3s Time] [2022-11-20 10:36:41,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-11-20 10:36:41,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 154. [2022-11-20 10:36:41,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 152 states have (on average 1.256578947368421) internal successors, (191), 153 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:41,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 191 transitions. [2022-11-20 10:36:41,933 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 191 transitions. Word has length 21 [2022-11-20 10:36:41,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:36:41,933 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 191 transitions. [2022-11-20 10:36:41,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:36:41,934 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 191 transitions. [2022-11-20 10:36:41,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 10:36:41,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:36:41,935 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:41,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:36:42,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 10:36:42,139 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 10:36:42,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:36:42,140 INFO L85 PathProgramCache]: Analyzing trace with hash -962615628, now seen corresponding path program 1 times [2022-11-20 10:36:42,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:36:42,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299460532] [2022-11-20 10:36:42,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:36:42,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:36:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:36:42,193 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:36:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:36:42,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:36:42,274 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:36:42,275 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-11-20 10:36:42,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-11-20 10:36:42,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-11-20 10:36:42,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-11-20 10:36:42,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-11-20 10:36:42,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:36:42,280 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 10:36:42,283 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:36:42,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:36:42 BoogieIcfgContainer [2022-11-20 10:36:42,323 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:36:42,323 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:36:42,323 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:36:42,324 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:36:42,324 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:36:00" (3/4) ... [2022-11-20 10:36:42,326 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 10:36:42,372 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 10:36:42,372 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:36:42,373 INFO L158 Benchmark]: Toolchain (without parser) took 43175.79ms. Allocated memory was 174.1MB in the beginning and 436.2MB in the end (delta: 262.1MB). Free memory was 142.1MB in the beginning and 384.4MB in the end (delta: -242.3MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. [2022-11-20 10:36:42,373 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 130.0MB. Free memory was 97.4MB in the beginning and 97.3MB in the end (delta: 78.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:36:42,374 INFO L158 Benchmark]: CACSL2BoogieTranslator took 632.75ms. Allocated memory is still 174.1MB. Free memory was 142.1MB in the beginning and 131.0MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 10:36:42,374 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.26ms. Allocated memory is still 174.1MB. Free memory was 130.1MB in the beginning and 128.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:36:42,374 INFO L158 Benchmark]: Boogie Preprocessor took 36.29ms. Allocated memory is still 174.1MB. Free memory was 128.0MB in the beginning and 126.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:36:42,375 INFO L158 Benchmark]: RCFGBuilder took 781.08ms. Allocated memory is still 174.1MB. Free memory was 126.8MB in the beginning and 101.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-20 10:36:42,375 INFO L158 Benchmark]: TraceAbstraction took 41616.74ms. Allocated memory was 174.1MB in the beginning and 436.2MB in the end (delta: 262.1MB). Free memory was 100.7MB in the beginning and 386.5MB in the end (delta: -285.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:36:42,375 INFO L158 Benchmark]: Witness Printer took 48.99ms. Allocated memory is still 436.2MB. Free memory was 386.5MB in the beginning and 384.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:36:42,377 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 130.0MB. Free memory was 97.4MB in the beginning and 97.3MB in the end (delta: 78.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 632.75ms. Allocated memory is still 174.1MB. Free memory was 142.1MB in the beginning and 131.0MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.26ms. Allocated memory is still 174.1MB. Free memory was 130.1MB in the beginning and 128.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.29ms. Allocated memory is still 174.1MB. Free memory was 128.0MB in the beginning and 126.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 781.08ms. Allocated memory is still 174.1MB. Free memory was 126.8MB in the beginning and 101.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 41616.74ms. Allocated memory was 174.1MB in the beginning and 436.2MB in the end (delta: 262.1MB). Free memory was 100.7MB in the beginning and 386.5MB in the end (delta: -285.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 48.99ms. Allocated memory is still 436.2MB. Free memory was 386.5MB in the beginning and 384.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1061]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1004] BCK* bucket = malloc(sizeof(BCK)); [L1005] bucket->data = 0 [L1006] bucket->list = ((void*)0) [L1008] bucket->next = malloc(sizeof(BCK)) [L1009] EXPR bucket->next [L1009] BCK* bcki = bucket->next; [L1010] bcki->data = 1 [L1011] bcki->list = ((void*)0) [L1013] bcki->next = malloc(sizeof(BCK)) [L1014] EXPR bcki->next [L1014] bcki = bcki->next [L1015] bcki->data = 2 [L1016] bcki->list = ((void*)0) [L1017] bcki->next = ((void*)0) [L1019] struct TSLL* item = ((void*)0); [L1020] struct TSLL* itr = ((void*)0); VAL [bcki={-1:0}, bucket={-3:0}, item={0:0}, itr={0:0}] [L1021] COND TRUE __VERIFIER_nondet_int() [L1023] item = malloc(sizeof(SLL)) [L1024] item->next = ((void*)0) [L1025] COND TRUE __VERIFIER_nondet_int() [L1026] item->data = 0 VAL [bcki={-1:0}, bucket={-3:0}, item={-4:0}, itr={0:0}] [L1032] bcki = bucket VAL [bcki={-3:0}, bucket={-3:0}, item={-4:0}, itr={0:0}] [L1034] COND FALSE !(!(bcki != ((void*)0))) VAL [bcki={-3:0}, bucket={-3:0}, item={-4:0}, itr={0:0}] [L1035] COND FALSE !(!(item != ((void*)0))) VAL [bcki={-3:0}, bucket={-3:0}, item={-4:0}, itr={0:0}] [L1036] EXPR bcki->data [L1036] EXPR item->data VAL [bcki={-3:0}, bcki->data=0, bucket={-3:0}, item={-4:0}, item->data=0, itr={0:0}] [L1036] COND FALSE !(bcki->data != item->data) [L1038] COND FALSE !(!(bcki != ((void*)0))) VAL [bcki={-3:0}, bucket={-3:0}, item={-4:0}, itr={0:0}] [L1040] EXPR bcki->list VAL [bcki={-3:0}, bcki->list={0:0}, bucket={-3:0}, item={-4:0}, itr={0:0}] [L1040] COND TRUE bcki->list == ((void*)0) [L1041] bcki->list = item VAL [bcki={-3:0}, bucket={-3:0}, item={-4:0}, itr={0:0}] [L1021] COND FALSE !(__VERIFIER_nondet_int()) [L1052] bcki = bucket VAL [bcki={-3:0}, bucket={-3:0}, item={-4:0}, itr={0:0}] [L1053] COND TRUE bcki != ((void*)0) [L1055] EXPR bcki->list [L1055] item = bcki->list [L1056] bcki->list = ((void*)0) VAL [bcki={-3:0}, bucket={-3:0}, item={-4:0}, itr={0:0}] [L1057] COND TRUE item != ((void*)0) [L1059] itr = item [L1060] EXPR item->next [L1060] item = item->next [L1061] EXPR itr->data [L1061] EXPR bcki->data VAL [bcki={-3:0}, bcki->data=0, bucket={-3:0}, item={0:0}, itr={-4:0}, itr->data=0] [L1061] COND TRUE !(itr->data != bcki->data) [L1061] reach_error() VAL [bcki={-3:0}, bucket={-3:0}, item={0:0}, itr={-4:0}] - UnprovableResult [Line: 1034]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1035]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 41.5s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 14.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1359 SdHoareTripleChecker+Valid, 5.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1359 mSDsluCounter, 2243 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 633 IncrementalHoareTripleChecker+Unchecked, 1864 mSDsCounter, 183 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2045 IncrementalHoareTripleChecker+Invalid, 2861 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 183 mSolverCounterUnsat, 379 mSDtfsCounter, 2045 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 388 GetRequests, 198 SyntacticMatches, 4 SemanticMatches, 186 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 15.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=11, InterpolantAutomatonStates: 115, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 350 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 21.6s InterpolantComputationTime, 321 NumberOfCodeBlocks, 321 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 385 ConstructedInterpolants, 43 QuantifiedInterpolants, 12128 SizeOfPredicates, 60 NumberOfNonLiveVariables, 1807 ConjunctsInSsa, 460 ConjunctsInUnsatCore, 24 InterpolantComputations, 5 PerfectInterpolantSequences, 54/141 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-20 10:36:42,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b67b2db2-5ac8-4896-a1a0-5d03ef15a56b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE