./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 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-buckets-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-2329fc7 [2022-12-13 14:05:37,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:05:37,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:05:38,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:05:38,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:05:38,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:05:38,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:05:38,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:05:38,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:05:38,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:05:38,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:05:38,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:05:38,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:05:38,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:05:38,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:05:38,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:05:38,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:05:38,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:05:38,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:05:38,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:05:38,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:05:38,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:05:38,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:05:38,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:05:38,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:05:38,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:05:38,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:05:38,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:05:38,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:05:38,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:05:38,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:05:38,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:05:38,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:05:38,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:05:38,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:05:38,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:05:38,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:05:38,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:05:38,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:05:38,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:05:38,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:05:38,039 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 14:05:38,059 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:05:38,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:05:38,060 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:05:38,060 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:05:38,061 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:05:38,061 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:05:38,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:05:38,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:05:38,062 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:05:38,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:05:38,063 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:05:38,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:05:38,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:05:38,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:05:38,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:05:38,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:05:38,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:05:38,064 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:05:38,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:05:38,064 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:05:38,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:05:38,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:05:38,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:05:38,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:05:38,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:05:38,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:05:38,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:05:38,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:05:38,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:05:38,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:05:38,066 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:05:38,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:05:38,067 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:05:38,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:05:38,067 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:05:38,067 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a4c2149f6fe1f453f0ff04220f5041f2227f6654d0fa84d48205415ce284fcb [2022-12-13 14:05:38,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:05:38,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:05:38,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:05:38,276 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:05:38,276 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:05:38,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/forester-heap/sll-buckets-2.i [2022-12-13 14:05:40,898 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:05:41,127 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:05:41,127 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/sv-benchmarks/c/forester-heap/sll-buckets-2.i [2022-12-13 14:05:41,136 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/data/62d29144c/dc1efbf5018249d8b0051547ba392bac/FLAGcf5bdc80d [2022-12-13 14:05:41,484 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/data/62d29144c/dc1efbf5018249d8b0051547ba392bac [2022-12-13 14:05:41,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:05:41,486 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:05:41,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:05:41,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:05:41,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:05:41,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:05:41" (1/1) ... [2022-12-13 14:05:41,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e7d850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:05:41, skipping insertion in model container [2022-12-13 14:05:41,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:05:41" (1/1) ... [2022-12-13 14:05:41,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:05:41,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:05:41,690 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_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22663,22676] [2022-12-13 14:05:41,694 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_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22734,22747] [2022-12-13 14:05:41,695 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_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22862,22875] [2022-12-13 14:05:41,698 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_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23275,23288] [2022-12-13 14:05:41,699 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_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23364,23377] [2022-12-13 14:05:41,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:05:41,708 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:05:41,731 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_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22663,22676] [2022-12-13 14:05:41,732 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_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22734,22747] [2022-12-13 14:05:41,733 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_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22862,22875] [2022-12-13 14:05:41,735 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_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23275,23288] [2022-12-13 14:05:41,736 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_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23364,23377] [2022-12-13 14:05:41,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:05:41,751 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:05:41,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:05:41 WrapperNode [2022-12-13 14:05:41,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:05:41,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:05:41,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:05:41,753 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:05:41,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:05:41" (1/1) ... [2022-12-13 14:05:41,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:05:41" (1/1) ... [2022-12-13 14:05:41,780 INFO L138 Inliner]: procedures = 119, calls = 42, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 155 [2022-12-13 14:05:41,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:05:41,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:05:41,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:05:41,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:05:41,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:05:41" (1/1) ... [2022-12-13 14:05:41,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:05:41" (1/1) ... [2022-12-13 14:05:41,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:05:41" (1/1) ... [2022-12-13 14:05:41,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:05:41" (1/1) ... [2022-12-13 14:05:41,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:05:41" (1/1) ... [2022-12-13 14:05:41,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:05:41" (1/1) ... [2022-12-13 14:05:41,799 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:05:41" (1/1) ... [2022-12-13 14:05:41,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:05:41" (1/1) ... [2022-12-13 14:05:41,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:05:41,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:05:41,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:05:41,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:05:41,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:05:41" (1/1) ... [2022-12-13 14:05:41,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:05:41,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:05:41,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:05:41,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:05:41,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 14:05:41,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 14:05:41,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 14:05:41,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:05:41,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 14:05:41,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 14:05:41,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:05:41,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:05:41,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:05:41,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:05:41,942 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:05:41,944 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:05:42,234 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:05:42,241 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:05:42,241 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-12-13 14:05:42,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:05:42 BoogieIcfgContainer [2022-12-13 14:05:42,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:05:42,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:05:42,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:05:42,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:05:42,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:05:41" (1/3) ... [2022-12-13 14:05:42,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599400ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:05:42, skipping insertion in model container [2022-12-13 14:05:42,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:05:41" (2/3) ... [2022-12-13 14:05:42,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599400ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:05:42, skipping insertion in model container [2022-12-13 14:05:42,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:05:42" (3/3) ... [2022-12-13 14:05:42,253 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-buckets-2.i [2022-12-13 14:05:42,270 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:05:42,270 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-12-13 14:05:42,314 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:05:42,320 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;@69654906, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:05:42,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-13 14:05:42,323 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) [2022-12-13 14:05:42,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 14:05:42,329 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:05:42,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:05:42,330 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)] === [2022-12-13 14:05:42,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:05:42,334 INFO L85 PathProgramCache]: Analyzing trace with hash 179510098, now seen corresponding path program 1 times [2022-12-13 14:05:42,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:05:42,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775808268] [2022-12-13 14:05:42,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:42,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:05:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:42,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:05:42,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:05:42,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775808268] [2022-12-13 14:05:42,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775808268] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:05:42,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:05:42,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:05:42,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017987541] [2022-12-13 14:05:42,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:05:42,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:05:42,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:05:42,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:05:42,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:05:42,639 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) [2022-12-13 14:05:42,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:05:42,712 INFO L93 Difference]: Finished difference Result 112 states and 188 transitions. [2022-12-13 14:05:42,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:05:42,714 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 [2022-12-13 14:05:42,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:05:42,720 INFO L225 Difference]: With dead ends: 112 [2022-12-13 14:05:42,720 INFO L226 Difference]: Without dead ends: 66 [2022-12-13 14:05:42,722 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 [2022-12-13 14:05:42,724 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 94 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:05:42,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 84 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:05:42,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-12-13 14:05:42,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 41. [2022-12-13 14:05:42,748 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) [2022-12-13 14:05:42,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2022-12-13 14:05:42,749 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 8 [2022-12-13 14:05:42,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:05:42,750 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2022-12-13 14:05:42,750 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) [2022-12-13 14:05:42,750 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2022-12-13 14:05:42,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-13 14:05:42,750 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:05:42,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:05:42,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:05:42,751 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)] === [2022-12-13 14:05:42,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:05:42,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1306111283, now seen corresponding path program 1 times [2022-12-13 14:05:42,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:05:42,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232783580] [2022-12-13 14:05:42,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:42,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:05:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:42,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:05:42,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:05:42,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232783580] [2022-12-13 14:05:42,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232783580] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:05:42,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:05:42,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:05:42,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770450692] [2022-12-13 14:05:42,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:05:42,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:05:42,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:05:42,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:05:42,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:05:42,826 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) [2022-12-13 14:05:42,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:05:42,853 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2022-12-13 14:05:42,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:05:42,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-13 14:05:42,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:05:42,854 INFO L225 Difference]: With dead ends: 45 [2022-12-13 14:05:42,854 INFO L226 Difference]: Without dead ends: 43 [2022-12-13 14:05:42,854 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 [2022-12-13 14:05:42,855 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, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:05:42,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 68 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:05:42,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-12-13 14:05:42,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2022-12-13 14:05:42,859 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) [2022-12-13 14:05:42,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2022-12-13 14:05:42,859 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 9 [2022-12-13 14:05:42,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:05:42,860 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2022-12-13 14:05:42,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:05:42,860 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2022-12-13 14:05:42,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 14:05:42,860 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:05:42,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:05:42,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 14:05:42,860 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)] === [2022-12-13 14:05:42,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:05:42,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1834780084, now seen corresponding path program 1 times [2022-12-13 14:05:42,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:05:42,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823569961] [2022-12-13 14:05:42,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:42,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:05:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:43,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:05:43,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:05:43,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823569961] [2022-12-13 14:05:43,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823569961] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:05:43,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:05:43,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:05:43,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908658750] [2022-12-13 14:05:43,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:05:43,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:05:43,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:05:43,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:05:43,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:05:43,382 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) [2022-12-13 14:05:43,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:05:43,505 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2022-12-13 14:05:43,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:05:43,505 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 [2022-12-13 14:05:43,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:05:43,507 INFO L225 Difference]: With dead ends: 61 [2022-12-13 14:05:43,507 INFO L226 Difference]: Without dead ends: 50 [2022-12-13 14:05:43,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:05:43,509 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 [2022-12-13 14:05:43,509 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] [2022-12-13 14:05:43,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-12-13 14:05:43,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2022-12-13 14:05:43,518 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) [2022-12-13 14:05:43,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2022-12-13 14:05:43,518 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 10 [2022-12-13 14:05:43,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:05:43,519 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2022-12-13 14:05:43,519 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) [2022-12-13 14:05:43,519 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2022-12-13 14:05:43,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 14:05:43,520 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:05:43,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:05:43,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 14:05:43,520 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)] === [2022-12-13 14:05:43,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:05:43,521 INFO L85 PathProgramCache]: Analyzing trace with hash 710639734, now seen corresponding path program 1 times [2022-12-13 14:05:43,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:05:43,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765030538] [2022-12-13 14:05:43,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:43,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:05:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:43,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:05:43,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:05:43,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765030538] [2022-12-13 14:05:43,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765030538] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:05:43,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:05:43,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:05:43,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424466180] [2022-12-13 14:05:43,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:05:43,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:05:43,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:05:43,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:05:43,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:05:43,569 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) [2022-12-13 14:05:43,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:05:43,649 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2022-12-13 14:05:43,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:05:43,650 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 [2022-12-13 14:05:43,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:05:43,650 INFO L225 Difference]: With dead ends: 45 [2022-12-13 14:05:43,650 INFO L226 Difference]: Without dead ends: 43 [2022-12-13 14:05:43,651 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 [2022-12-13 14:05:43,652 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 [2022-12-13 14:05:43,652 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] [2022-12-13 14:05:43,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-12-13 14:05:43,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2022-12-13 14:05:43,659 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) [2022-12-13 14:05:43,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2022-12-13 14:05:43,660 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 10 [2022-12-13 14:05:43,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:05:43,660 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2022-12-13 14:05:43,660 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) [2022-12-13 14:05:43,661 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2022-12-13 14:05:43,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 14:05:43,661 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:05:43,661 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:05:43,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 14:05:43,662 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)] === [2022-12-13 14:05:43,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:05:43,662 INFO L85 PathProgramCache]: Analyzing trace with hash 625501225, now seen corresponding path program 1 times [2022-12-13 14:05:43,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:05:43,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065399139] [2022-12-13 14:05:43,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:43,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:05:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:44,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:05:44,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:05:44,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065399139] [2022-12-13 14:05:44,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065399139] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:05:44,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341766678] [2022-12-13 14:05:44,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:44,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:05:44,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:05:44,324 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:05:44,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 14:05:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:44,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 63 conjunts are in the unsatisfiable core [2022-12-13 14:05:44,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:05:44,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:44,526 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 [2022-12-13 14:05:44,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:44,538 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 [2022-12-13 14:05:44,569 INFO L321 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2022-12-13 14:05:44,570 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 [2022-12-13 14:05:44,577 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 [2022-12-13 14:05:44,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:44,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:44,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:44,590 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 [2022-12-13 14:05:44,599 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 [2022-12-13 14:05:44,612 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 14:05:44,613 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 [2022-12-13 14:05:44,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:44,727 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 [2022-12-13 14:05:44,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:44,734 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:05:44,740 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-13 14:05:44,741 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 [2022-12-13 14:05:44,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:44,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:05:44,881 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 14:05:44,882 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 [2022-12-13 14:05:44,895 INFO L321 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-12-13 14:05:44,895 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 [2022-12-13 14:05:44,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:05:44,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:05:45,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:05:45,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341766678] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:05:45,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:05:45,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-12-13 14:05:45,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84818074] [2022-12-13 14:05:45,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:05:45,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 14:05:45,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:05:45,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 14:05:45,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-12-13 14:05:45,148 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) [2022-12-13 14:05:45,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:05:45,680 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2022-12-13 14:05:45,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 14:05:45,681 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 [2022-12-13 14:05:45,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:05:45,681 INFO L225 Difference]: With dead ends: 75 [2022-12-13 14:05:45,681 INFO L226 Difference]: Without dead ends: 64 [2022-12-13 14:05:45,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-12-13 14:05:45,683 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 66 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:05:45,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 209 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 14:05:45,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-12-13 14:05:45,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2022-12-13 14:05:45,692 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) [2022-12-13 14:05:45,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2022-12-13 14:05:45,693 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 15 [2022-12-13 14:05:45,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:05:45,693 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2022-12-13 14:05:45,693 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) [2022-12-13 14:05:45,693 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2022-12-13 14:05:45,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 14:05:45,694 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:05:45,694 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:05:45,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 14:05:45,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:05:45,896 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)] === [2022-12-13 14:05:45,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:05:45,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1157082046, now seen corresponding path program 1 times [2022-12-13 14:05:45,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:05:45,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297625030] [2022-12-13 14:05:45,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:45,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:05:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:46,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:05:46,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:05:46,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297625030] [2022-12-13 14:05:46,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297625030] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:05:46,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008500717] [2022-12-13 14:05:46,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:46,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:05:46,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:05:46,312 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:05:46,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 14:05:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:46,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 42 conjunts are in the unsatisfiable core [2022-12-13 14:05:46,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:05:46,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:46,414 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 [2022-12-13 14:05:46,434 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2022-12-13 14:05:46,434 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 [2022-12-13 14:05:46,454 INFO L321 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2022-12-13 14:05:46,454 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 [2022-12-13 14:05:46,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:46,501 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 [2022-12-13 14:05:46,513 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-12-13 14:05:46,513 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 [2022-12-13 14:05:46,545 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 [2022-12-13 14:05:46,614 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 14:05:46,614 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 [2022-12-13 14:05:46,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:05:46,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:05:46,669 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 [2022-12-13 14:05:46,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:05:46,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008500717] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:05:46,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:05:46,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2022-12-13 14:05:46,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144471288] [2022-12-13 14:05:46,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:05:46,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 14:05:46,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:05:46,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 14:05:46,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=4, NotChecked=20, Total=156 [2022-12-13 14:05:46,697 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) [2022-12-13 14:05:47,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:05:47,129 INFO L93 Difference]: Finished difference Result 155 states and 194 transitions. [2022-12-13 14:05:47,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 14:05:47,129 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 [2022-12-13 14:05:47,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:05:47,130 INFO L225 Difference]: With dead ends: 155 [2022-12-13 14:05:47,130 INFO L226 Difference]: Without dead ends: 153 [2022-12-13 14:05:47,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=286, Unknown=4, NotChecked=38, Total=462 [2022-12-13 14:05:47,131 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 315 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:05:47,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 331 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 271 Invalid, 0 Unknown, 142 Unchecked, 0.3s Time] [2022-12-13 14:05:47,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-12-13 14:05:47,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 71. [2022-12-13 14:05:47,140 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) [2022-12-13 14:05:47,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2022-12-13 14:05:47,140 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 16 [2022-12-13 14:05:47,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:05:47,140 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2022-12-13 14:05:47,140 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) [2022-12-13 14:05:47,140 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2022-12-13 14:05:47,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 14:05:47,141 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:05:47,141 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:05:47,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 14:05:47,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 14:05:47,342 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)] === [2022-12-13 14:05:47,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:05:47,342 INFO L85 PathProgramCache]: Analyzing trace with hash 442135079, now seen corresponding path program 2 times [2022-12-13 14:05:47,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:05:47,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841786634] [2022-12-13 14:05:47,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:47,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:05:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:47,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:05:47,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:05:47,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841786634] [2022-12-13 14:05:47,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841786634] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:05:47,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878166477] [2022-12-13 14:05:47,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:05:47,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:05:47,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:05:47,752 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:05:47,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 14:05:48,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 14:05:48,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:05:48,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-13 14:05:48,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:05:48,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:48,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:48,085 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 [2022-12-13 14:05:48,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:48,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:48,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:48,093 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 [2022-12-13 14:05:48,113 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-12-13 14:05:48,113 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 [2022-12-13 14:05:48,171 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-12-13 14:05:48,171 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 [2022-12-13 14:05:48,176 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 [2022-12-13 14:05:48,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 14:05:48,269 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 [2022-12-13 14:05:48,291 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 14:05:48,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:05:48,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878166477] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:05:48,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:05:48,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-12-13 14:05:48,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696437918] [2022-12-13 14:05:48,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:05:48,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:05:48,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:05:48,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:05:48,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:05:48,293 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) [2022-12-13 14:05:48,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:05:48,657 INFO L93 Difference]: Finished difference Result 184 states and 227 transitions. [2022-12-13 14:05:48,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:05:48,658 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 [2022-12-13 14:05:48,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:05:48,659 INFO L225 Difference]: With dead ends: 184 [2022-12-13 14:05:48,659 INFO L226 Difference]: Without dead ends: 149 [2022-12-13 14:05:48,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-12-13 14:05:48,659 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 106 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:05:48,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 161 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 14:05:48,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-12-13 14:05:48,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 99. [2022-12-13 14:05:48,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 97 states have (on average 1.2577319587628866) internal successors, (122), 98 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:05:48,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 122 transitions. [2022-12-13 14:05:48,674 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 122 transitions. Word has length 18 [2022-12-13 14:05:48,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:05:48,674 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 122 transitions. [2022-12-13 14:05:48,674 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) [2022-12-13 14:05:48,674 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 122 transitions. [2022-12-13 14:05:48,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-13 14:05:48,675 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:05:48,675 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:05:48,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 14:05:48,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:05:48,877 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)] === [2022-12-13 14:05:48,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:05:48,878 INFO L85 PathProgramCache]: Analyzing trace with hash -482453053, now seen corresponding path program 1 times [2022-12-13 14:05:48,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:05:48,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028107616] [2022-12-13 14:05:48,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:48,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:05:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:49,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:05:49,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:05:49,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028107616] [2022-12-13 14:05:49,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028107616] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:05:49,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369247747] [2022-12-13 14:05:49,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:49,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:05:49,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:05:49,320 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:05:49,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 14:05:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:49,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 71 conjunts are in the unsatisfiable core [2022-12-13 14:05:49,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:05:49,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:49,452 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 [2022-12-13 14:05:49,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:49,460 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 [2022-12-13 14:05:49,479 INFO L321 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2022-12-13 14:05:49,479 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 [2022-12-13 14:05:49,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:49,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:49,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:49,487 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 [2022-12-13 14:05:49,489 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 [2022-12-13 14:05:49,516 INFO L321 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2022-12-13 14:05:49,516 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 [2022-12-13 14:05:49,523 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 [2022-12-13 14:05:49,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:49,616 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-13 14:05:49,616 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 [2022-12-13 14:05:49,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:49,637 INFO L321 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-12-13 14:05:49,638 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 [2022-12-13 14:05:49,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:49,651 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 [2022-12-13 14:05:49,741 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-13 14:05:49,741 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 [2022-12-13 14:05:49,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:49,748 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 [2022-12-13 14:05:49,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:49,915 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 [2022-12-13 14:05:49,966 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 14:05:49,966 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 [2022-12-13 14:05:49,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:05:49,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:05:50,027 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 [2022-12-13 14:05:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:05:50,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369247747] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:05:50,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:05:50,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-12-13 14:05:50,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121603981] [2022-12-13 14:05:50,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:05:50,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 14:05:50,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:05:50,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 14:05:50,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=221, Unknown=2, NotChecked=30, Total=306 [2022-12-13 14:05:50,081 INFO L87 Difference]: Start difference. First operand 99 states and 122 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) [2022-12-13 14:05:55,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:05:55,088 INFO L93 Difference]: Finished difference Result 222 states and 278 transitions. [2022-12-13 14:05:55,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 14:05:55,089 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 [2022-12-13 14:05:55,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:05:55,093 INFO L225 Difference]: With dead ends: 222 [2022-12-13 14:05:55,093 INFO L226 Difference]: Without dead ends: 220 [2022-12-13 14:05:55,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=258, Invalid=800, Unknown=2, NotChecked=62, Total=1122 [2022-12-13 14:05:55,094 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 533 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 14:05:55,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 242 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 304 Invalid, 0 Unknown, 103 Unchecked, 0.4s Time] [2022-12-13 14:05:55,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-12-13 14:05:55,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 120. [2022-12-13 14:05:55,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 118 states have (on average 1.2796610169491525) internal successors, (151), 119 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:05:55,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 151 transitions. [2022-12-13 14:05:55,113 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 151 transitions. Word has length 19 [2022-12-13 14:05:55,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:05:55,114 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 151 transitions. [2022-12-13 14:05:55,114 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) [2022-12-13 14:05:55,114 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 151 transitions. [2022-12-13 14:05:55,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-13 14:05:55,114 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:05:55,114 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:05:55,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 14:05:55,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:05:55,316 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)] === [2022-12-13 14:05:55,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:05:55,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1136543444, now seen corresponding path program 2 times [2022-12-13 14:05:55,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:05:55,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260325746] [2022-12-13 14:05:55,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:55,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:05:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:56,197 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:05:56,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:05:56,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260325746] [2022-12-13 14:05:56,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260325746] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:05:56,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993469316] [2022-12-13 14:05:56,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:05:56,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:05:56,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:05:56,198 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:05:56,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 14:05:56,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 14:05:56,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:05:56,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 76 conjunts are in the unsatisfiable core [2022-12-13 14:05:56,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:05:56,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:56,515 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 [2022-12-13 14:05:56,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:56,522 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 [2022-12-13 14:05:56,547 INFO L321 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2022-12-13 14:05:56,548 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 [2022-12-13 14:05:56,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:56,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:56,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:56,556 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 [2022-12-13 14:05:56,561 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 [2022-12-13 14:05:56,565 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-12-13 14:05:56,565 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 [2022-12-13 14:05:56,571 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 [2022-12-13 14:05:56,575 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 [2022-12-13 14:05:56,581 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 [2022-12-13 14:05:56,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:56,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:05:56,724 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-13 14:05:56,725 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 [2022-12-13 14:05:56,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:56,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:56,735 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 [2022-12-13 14:05:56,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:56,895 INFO L321 Elim1Store]: treesize reduction 56, result has 16.4 percent of original size [2022-12-13 14:05:56,896 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 [2022-12-13 14:05:56,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:56,902 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:05:56,909 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-13 14:05:56,909 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 [2022-12-13 14:05:57,079 INFO L321 Elim1Store]: treesize reduction 33, result has 19.5 percent of original size [2022-12-13 14:05:57,080 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 [2022-12-13 14:05:57,088 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-13 14:05:57,088 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 [2022-12-13 14:05:57,094 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:05:57,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:05:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:05:57,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993469316] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:05:57,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:05:57,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2022-12-13 14:05:57,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19145759] [2022-12-13 14:05:57,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:05:57,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 14:05:57,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:05:57,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 14:05:57,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2022-12-13 14:05:57,657 INFO L87 Difference]: Start difference. First operand 120 states and 151 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) [2022-12-13 14:05:58,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:05:58,579 INFO L93 Difference]: Finished difference Result 149 states and 185 transitions. [2022-12-13 14:05:58,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 14:05:58,580 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 [2022-12-13 14:05:58,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:05:58,580 INFO L225 Difference]: With dead ends: 149 [2022-12-13 14:05:58,580 INFO L226 Difference]: Without dead ends: 138 [2022-12-13 14:05:58,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=168, Invalid=762, Unknown=0, NotChecked=0, Total=930 [2022-12-13 14:05:58,581 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 70 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 14:05:58,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 202 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 14:05:58,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-12-13 14:05:58,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 125. [2022-12-13 14:05:58,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 123 states have (on average 1.2682926829268293) internal successors, (156), 124 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:05:58,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 156 transitions. [2022-12-13 14:05:58,606 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 156 transitions. Word has length 20 [2022-12-13 14:05:58,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:05:58,606 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 156 transitions. [2022-12-13 14:05:58,606 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) [2022-12-13 14:05:58,606 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 156 transitions. [2022-12-13 14:05:58,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-13 14:05:58,606 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:05:58,606 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:05:58,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 14:05:58,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:05:58,808 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)] === [2022-12-13 14:05:58,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:05:58,810 INFO L85 PathProgramCache]: Analyzing trace with hash 220535656, now seen corresponding path program 2 times [2022-12-13 14:05:58,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:05:58,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408791609] [2022-12-13 14:05:58,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:58,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:05:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:59,366 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 14:05:59,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:05:59,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408791609] [2022-12-13 14:05:59,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408791609] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:05:59,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664557866] [2022-12-13 14:05:59,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:05:59,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:05:59,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:05:59,367 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:05:59,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 14:05:59,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 14:05:59,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:05:59,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 74 conjunts are in the unsatisfiable core [2022-12-13 14:05:59,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:05:59,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:59,734 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 [2022-12-13 14:05:59,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:59,742 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 [2022-12-13 14:05:59,770 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2022-12-13 14:05:59,770 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 [2022-12-13 14:05:59,776 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 [2022-12-13 14:05:59,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:59,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:59,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:59,786 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 [2022-12-13 14:05:59,790 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 [2022-12-13 14:05:59,821 INFO L321 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2022-12-13 14:05:59,821 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 [2022-12-13 14:05:59,829 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 [2022-12-13 14:05:59,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:59,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:59,886 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 [2022-12-13 14:05:59,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:05:59,894 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 [2022-12-13 14:05:59,907 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-13 14:05:59,907 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 [2022-12-13 14:05:59,927 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-12-13 14:05:59,927 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 [2022-12-13 14:05:59,976 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 [2022-12-13 14:05:59,981 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 [2022-12-13 14:05:59,988 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 [2022-12-13 14:06:00,179 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 [2022-12-13 14:06:00,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:06:00,233 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 [2022-12-13 14:06:00,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 14:06:00,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:06:00,416 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 14:06:00,417 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 [2022-12-13 14:06:00,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 14:06:00,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664557866] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:06:00,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:06:00,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-12-13 14:06:00,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138160929] [2022-12-13 14:06:00,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:06:00,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 14:06:00,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:06:00,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 14:06:00,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=251, Unknown=5, NotChecked=0, Total=306 [2022-12-13 14:06:00,504 INFO L87 Difference]: Start difference. First operand 125 states and 156 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) [2022-12-13 14:06:01,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:06:01,348 INFO L93 Difference]: Finished difference Result 275 states and 346 transitions. [2022-12-13 14:06:01,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 14:06:01,349 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 [2022-12-13 14:06:01,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:06:01,350 INFO L225 Difference]: With dead ends: 275 [2022-12-13 14:06:01,350 INFO L226 Difference]: Without dead ends: 240 [2022-12-13 14:06:01,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=609, Unknown=5, NotChecked=0, Total=812 [2022-12-13 14:06:01,350 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 316 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 14:06:01,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 273 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 14:06:01,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-12-13 14:06:01,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 168. [2022-12-13 14:06:01,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 166 states have (on average 1.2650602409638554) internal successors, (210), 167 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:06:01,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 210 transitions. [2022-12-13 14:06:01,376 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 210 transitions. Word has length 21 [2022-12-13 14:06:01,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:06:01,376 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 210 transitions. [2022-12-13 14:06:01,376 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) [2022-12-13 14:06:01,376 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 210 transitions. [2022-12-13 14:06:01,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-13 14:06:01,377 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:06:01,377 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:06:01,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 14:06:01,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 14:06:01,578 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)] === [2022-12-13 14:06:01,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:06:01,579 INFO L85 PathProgramCache]: Analyzing trace with hash -800532698, now seen corresponding path program 1 times [2022-12-13 14:06:01,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:06:01,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266845009] [2022-12-13 14:06:01,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:06:01,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:06:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:06:02,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:06:02,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266845009] [2022-12-13 14:06:02,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266845009] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:06:02,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792369504] [2022-12-13 14:06:02,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:06:02,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:06:02,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:06:02,197 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:06:02,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 14:06:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:02,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 88 conjunts are in the unsatisfiable core [2022-12-13 14:06:02,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:06:02,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:06:02,344 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 [2022-12-13 14:06:02,375 INFO L321 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2022-12-13 14:06:02,376 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 [2022-12-13 14:06:02,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:06:02,382 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 [2022-12-13 14:06:02,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:06:02,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:06:02,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:06:02,390 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 [2022-12-13 14:06:02,412 INFO L321 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2022-12-13 14:06:02,412 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 [2022-12-13 14:06:02,421 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 [2022-12-13 14:06:02,428 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 [2022-12-13 14:06:02,441 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 [2022-12-13 14:06:02,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:06:02,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:06:02,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:06:02,502 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 [2022-12-13 14:06:02,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:06:02,518 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-13 14:06:02,518 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 [2022-12-13 14:06:02,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:06:02,539 INFO L321 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-12-13 14:06:02,539 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 [2022-12-13 14:06:02,549 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 [2022-12-13 14:06:02,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:06:02,614 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 [2022-12-13 14:06:02,625 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-13 14:06:02,625 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 [2022-12-13 14:06:02,632 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 [2022-12-13 14:06:02,961 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-12-13 14:06:02,962 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 [2022-12-13 14:06:02,973 INFO L321 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-12-13 14:06:02,973 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 [2022-12-13 14:06:03,003 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 [2022-12-13 14:06:03,023 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:06:03,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:06:03,156 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 [2022-12-13 14:06:03,169 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 14:06:03,170 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 [2022-12-13 14:06:03,264 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:06:03,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792369504] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:06:03,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:06:03,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-12-13 14:06:03,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894440236] [2022-12-13 14:06:03,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:06:03,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 14:06:03,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:06:03,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 14:06:03,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=402, Unknown=1, NotChecked=40, Total=506 [2022-12-13 14:06:03,266 INFO L87 Difference]: Start difference. First operand 168 states and 210 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) [2022-12-13 14:06:05,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:06:05,091 INFO L93 Difference]: Finished difference Result 325 states and 407 transitions. [2022-12-13 14:06:05,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 14:06:05,092 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 [2022-12-13 14:06:05,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:06:05,092 INFO L225 Difference]: With dead ends: 325 [2022-12-13 14:06:05,093 INFO L226 Difference]: Without dead ends: 290 [2022-12-13 14:06:05,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=237, Invalid=956, Unknown=1, NotChecked=66, Total=1260 [2022-12-13 14:06:05,093 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 308 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:06:05,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 457 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 750 Invalid, 0 Unknown, 130 Unchecked, 1.1s Time] [2022-12-13 14:06:05,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-12-13 14:06:05,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 204. [2022-12-13 14:06:05,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 202 states have (on average 1.2673267326732673) internal successors, (256), 203 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:06:05,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 256 transitions. [2022-12-13 14:06:05,127 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 256 transitions. Word has length 21 [2022-12-13 14:06:05,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:06:05,127 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 256 transitions. [2022-12-13 14:06:05,127 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) [2022-12-13 14:06:05,127 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 256 transitions. [2022-12-13 14:06:05,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 14:06:05,128 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:06:05,128 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] [2022-12-13 14:06:05,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 14:06:05,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:06:05,328 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)] === [2022-12-13 14:06:05,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:06:05,329 INFO L85 PathProgramCache]: Analyzing trace with hash -962615628, now seen corresponding path program 1 times [2022-12-13 14:06:05,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:06:05,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54080615] [2022-12-13 14:06:05,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:06:05,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:06:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:06:05,350 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 14:06:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:06:05,377 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 14:06:05,377 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 14:06:05,378 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-13 14:06:05,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-12-13 14:06:05,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-12-13 14:06:05,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-12-13 14:06:05,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-12-13 14:06:05,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 14:06:05,381 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 14:06:05,384 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 14:06:05,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 02:06:05 BoogieIcfgContainer [2022-12-13 14:06:05,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 14:06:05,403 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 14:06:05,403 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 14:06:05,403 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 14:06:05,404 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:05:42" (3/4) ... [2022-12-13 14:06:05,405 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 14:06:05,432 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 14:06:05,432 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 14:06:05,433 INFO L158 Benchmark]: Toolchain (without parser) took 23946.45ms. Allocated memory was 121.6MB in the beginning and 188.7MB in the end (delta: 67.1MB). Free memory was 87.6MB in the beginning and 70.0MB in the end (delta: 17.6MB). Peak memory consumption was 87.4MB. Max. memory is 16.1GB. [2022-12-13 14:06:05,433 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory was 87.5MB in the beginning and 87.5MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:06:05,433 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.71ms. Allocated memory is still 121.6MB. Free memory was 87.6MB in the beginning and 69.4MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 14:06:05,433 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.27ms. Allocated memory is still 121.6MB. Free memory was 69.0MB in the beginning and 66.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:06:05,434 INFO L158 Benchmark]: Boogie Preprocessor took 20.71ms. Allocated memory is still 121.6MB. Free memory was 66.9MB in the beginning and 65.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:06:05,434 INFO L158 Benchmark]: RCFGBuilder took 441.16ms. Allocated memory was 121.6MB in the beginning and 157.3MB in the end (delta: 35.7MB). Free memory was 65.2MB in the beginning and 123.8MB in the end (delta: -58.6MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. [2022-12-13 14:06:05,434 INFO L158 Benchmark]: TraceAbstraction took 23156.61ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 122.7MB in the beginning and 72.1MB in the end (delta: 50.6MB). Peak memory consumption was 82.0MB. Max. memory is 16.1GB. [2022-12-13 14:06:05,434 INFO L158 Benchmark]: Witness Printer took 29.37ms. Allocated memory is still 188.7MB. Free memory was 72.1MB in the beginning and 70.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:06:05,436 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory was 87.5MB in the beginning and 87.5MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.71ms. Allocated memory is still 121.6MB. Free memory was 87.6MB in the beginning and 69.4MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.27ms. Allocated memory is still 121.6MB. Free memory was 69.0MB in the beginning and 66.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.71ms. Allocated memory is still 121.6MB. Free memory was 66.9MB in the beginning and 65.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 441.16ms. Allocated memory was 121.6MB in the beginning and 157.3MB in the end (delta: 35.7MB). Free memory was 65.2MB in the beginning and 123.8MB in the end (delta: -58.6MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. * TraceAbstraction took 23156.61ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 122.7MB in the beginning and 72.1MB in the end (delta: 50.6MB). Peak memory consumption was 82.0MB. Max. memory is 16.1GB. * Witness Printer took 29.37ms. Allocated memory is still 188.7MB. Free memory was 72.1MB in the beginning and 70.0MB 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: 23.1s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 10.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1869 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1869 mSDsluCounter, 2172 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 375 IncrementalHoareTripleChecker+Unchecked, 1781 mSDsCounter, 235 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2453 IncrementalHoareTripleChecker+Invalid, 3063 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 235 mSolverCounterUnsat, 391 mSDtfsCounter, 2453 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 381 GetRequests, 190 SyntacticMatches, 2 SemanticMatches, 189 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=204occurred in iteration=11, InterpolantAutomatonStates: 113, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 456 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 9.1s 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! [2022-12-13 14:06:05,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3198dfb-7444-46ab-8d0f-1d5bbda8049a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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