./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 64bit --witnessprinter.graph.data.programhash 846a565d6a742f245ca362c4e2fb63bb4d14b5e5473527f5da84e078cffb2df4 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:19:22,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:19:22,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:19:22,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:19:22,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:19:22,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:19:22,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:19:22,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:19:22,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:19:22,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:19:22,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:19:22,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:19:22,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:19:22,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:19:22,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:19:22,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:19:22,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:19:22,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:19:22,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:19:22,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:19:22,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:19:22,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:19:22,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:19:22,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:19:22,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:19:22,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:19:22,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:19:22,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:19:22,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:19:22,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:19:22,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:19:22,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:19:22,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:19:22,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:19:22,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:19:22,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:19:22,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:19:22,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:19:22,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:19:22,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:19:22,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:19:22,150 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:19:22,185 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:19:22,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:19:22,186 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:19:22,186 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:19:22,187 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:19:22,187 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:19:22,188 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:19:22,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:19:22,188 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:19:22,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:19:22,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:19:22,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:19:22,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:19:22,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:19:22,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:19:22,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:19:22,190 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:19:22,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:19:22,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:19:22,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:19:22,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:19:22,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:19:22,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:19:22,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:19:22,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:19:22,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:19:22,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:19:22,192 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:19:22,192 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:19:22,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:19:22,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:19:22,193 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 846a565d6a742f245ca362c4e2fb63bb4d14b5e5473527f5da84e078cffb2df4 [2021-12-16 03:19:22,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:19:22,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:19:22,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:19:22,475 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:19:22,476 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:19:22,477 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i [2021-12-16 03:19:22,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fba5944f/3f6dfdde809944bba3c4dc223b827e48/FLAG945735053 [2021-12-16 03:19:23,177 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:19:23,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i [2021-12-16 03:19:23,214 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fba5944f/3f6dfdde809944bba3c4dc223b827e48/FLAG945735053 [2021-12-16 03:19:23,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fba5944f/3f6dfdde809944bba3c4dc223b827e48 [2021-12-16 03:19:23,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:19:23,328 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:19:23,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:19:23,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:19:23,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:19:23,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:19:23" (1/1) ... [2021-12-16 03:19:23,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dd687ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:23, skipping insertion in model container [2021-12-16 03:19:23,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:19:23" (1/1) ... [2021-12-16 03:19:23,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:19:23,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:19:23,747 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i[4504,4517] [2021-12-16 03:19:23,755 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i[4564,4577] [2021-12-16 03:19:24,734 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:24,735 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:24,735 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:24,736 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:24,737 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:24,748 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:24,748 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:24,750 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:24,751 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:24,753 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:24,753 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:24,754 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:24,754 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,179 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:19:25,186 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:19:25,187 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:19:25,189 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:19:25,190 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:19:25,191 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:19:25,191 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:19:25,192 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:19:25,193 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:19:25,195 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:19:25,360 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:19:25,713 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,714 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,743 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,745 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,752 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,753 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,771 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,772 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,776 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,776 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,777 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,777 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,777 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:19:25,866 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:19:25,887 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i[4504,4517] [2021-12-16 03:19:25,888 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_get_entry_count_harness.i[4564,4577] [2021-12-16 03:19:25,915 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,915 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,915 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,916 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,916 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,919 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,920 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,921 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,923 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,924 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,924 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,926 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,926 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:25,983 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:19:25,984 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:19:25,985 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:19:25,986 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:19:25,986 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:19:25,987 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:19:25,987 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:19:25,987 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:19:25,988 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:19:25,988 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:19:26,010 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:19:26,075 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:26,076 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:26,081 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:26,082 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:26,083 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:26,084 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:26,090 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:26,091 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:26,091 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:26,091 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:26,091 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:26,092 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:26,092 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:26,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:19:26,359 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:19:26,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:26 WrapperNode [2021-12-16 03:19:26,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:19:26,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:19:26,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:19:26,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:19:26,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:26" (1/1) ... [2021-12-16 03:19:26,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:26" (1/1) ... [2021-12-16 03:19:26,536 INFO L137 Inliner]: procedures = 774, calls = 2433, calls flagged for inlining = 68, calls inlined = 11, statements flattened = 608 [2021-12-16 03:19:26,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:19:26,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:19:26,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:19:26,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:19:26,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:26" (1/1) ... [2021-12-16 03:19:26,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:26" (1/1) ... [2021-12-16 03:19:26,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:26" (1/1) ... [2021-12-16 03:19:26,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:26" (1/1) ... [2021-12-16 03:19:26,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:26" (1/1) ... [2021-12-16 03:19:26,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:26" (1/1) ... [2021-12-16 03:19:26,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:26" (1/1) ... [2021-12-16 03:19:26,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:19:26,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:19:26,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:19:26,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:19:26,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:26" (1/1) ... [2021-12-16 03:19:26,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:19:26,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:19:26,632 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 03:19:26,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 03:19:26,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-16 03:19:26,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:19:26,678 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-16 03:19:26,678 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-16 03:19:26,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 03:19:26,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 03:19:26,678 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-12-16 03:19:26,679 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-12-16 03:19:26,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:19:26,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:19:26,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 03:19:26,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:19:26,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:19:26,679 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-16 03:19:26,680 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-16 03:19:26,680 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-16 03:19:26,680 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-16 03:19:26,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:19:26,680 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-16 03:19:26,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-16 03:19:26,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:19:26,681 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-16 03:19:26,681 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-16 03:19:26,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:19:26,681 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-12-16 03:19:26,682 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-12-16 03:19:26,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:19:26,682 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_get_entry_count [2021-12-16 03:19:26,682 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_get_entry_count [2021-12-16 03:19:26,682 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-12-16 03:19:26,682 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-12-16 03:19:26,682 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 03:19:26,683 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 03:19:26,683 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-12-16 03:19:26,683 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-12-16 03:19:26,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:19:26,683 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-16 03:19:26,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-16 03:19:26,684 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-16 03:19:26,684 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-16 03:19:26,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:19:27,033 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:19:27,036 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:19:27,507 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:19:27,516 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:19:27,516 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 03:19:27,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:19:27 BoogieIcfgContainer [2021-12-16 03:19:27,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:19:27,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:19:27,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:19:27,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:19:27,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:19:23" (1/3) ... [2021-12-16 03:19:27,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac35be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:19:27, skipping insertion in model container [2021-12-16 03:19:27,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:26" (2/3) ... [2021-12-16 03:19:27,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac35be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:19:27, skipping insertion in model container [2021-12-16 03:19:27,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:19:27" (3/3) ... [2021-12-16 03:19:27,533 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_get_entry_count_harness.i [2021-12-16 03:19:27,538 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:19:27,539 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:19:27,584 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:19:27,589 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 03:19:27,590 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:19:27,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 73 states have (on average 1.1506849315068493) internal successors, (84), 74 states have internal predecessors, (84), 26 states have call successors, (26), 14 states have call predecessors, (26), 14 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-16 03:19:27,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-16 03:19:27,627 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:19:27,628 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:19:27,629 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:19:27,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:19:27,634 INFO L85 PathProgramCache]: Analyzing trace with hash 2047836461, now seen corresponding path program 1 times [2021-12-16 03:19:27,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:19:27,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176516982] [2021-12-16 03:19:27,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:27,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:19:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:28,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:19:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:28,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:19:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:28,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:19:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:28,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 03:19:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:28,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 03:19:28,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:19:28,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176516982] [2021-12-16 03:19:28,175 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-16 03:19:28,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845017796] [2021-12-16 03:19:28,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:28,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:19:28,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:19:28,180 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:19:28,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 03:19:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:28,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 2325 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-16 03:19:28,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:19:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-16 03:19:28,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:19:28,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845017796] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:19:28,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:19:28,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 03:19:28,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299829345] [2021-12-16 03:19:28,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:19:28,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 03:19:28,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:19:28,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 03:19:28,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:19:28,951 INFO L87 Difference]: Start difference. First operand has 115 states, 73 states have (on average 1.1506849315068493) internal successors, (84), 74 states have internal predecessors, (84), 26 states have call successors, (26), 14 states have call predecessors, (26), 14 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-16 03:19:28,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:19:28,997 INFO L93 Difference]: Finished difference Result 222 states and 274 transitions. [2021-12-16 03:19:28,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 03:19:28,999 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 106 [2021-12-16 03:19:29,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:19:29,008 INFO L225 Difference]: With dead ends: 222 [2021-12-16 03:19:29,008 INFO L226 Difference]: Without dead ends: 109 [2021-12-16 03:19:29,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:19:29,019 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:19:29,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:19:29,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-12-16 03:19:29,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-12-16 03:19:29,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 68 states have (on average 1.1323529411764706) internal successors, (77), 69 states have internal predecessors, (77), 26 states have call successors, (26), 14 states have call predecessors, (26), 14 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-16 03:19:29,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 128 transitions. [2021-12-16 03:19:29,074 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 128 transitions. Word has length 106 [2021-12-16 03:19:29,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:19:29,074 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 128 transitions. [2021-12-16 03:19:29,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-16 03:19:29,075 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 128 transitions. [2021-12-16 03:19:29,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-16 03:19:29,079 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:19:29,079 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:19:29,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 03:19:29,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-16 03:19:29,304 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:19:29,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:19:29,304 INFO L85 PathProgramCache]: Analyzing trace with hash -637484239, now seen corresponding path program 1 times [2021-12-16 03:19:29,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:19:29,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515404362] [2021-12-16 03:19:29,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:29,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:19:29,380 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:19:29,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308705811] [2021-12-16 03:19:29,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:29,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:19:29,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:19:29,382 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:19:29,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 03:19:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:29,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 2325 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 03:19:29,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:19:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 03:19:30,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:19:30,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:19:30,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515404362] [2021-12-16 03:19:30,053 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:19:30,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308705811] [2021-12-16 03:19:30,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308705811] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:19:30,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:19:30,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:19:30,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571162686] [2021-12-16 03:19:30,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:19:30,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:19:30,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:19:30,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:19:30,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:19:30,059 INFO L87 Difference]: Start difference. First operand 109 states and 128 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 03:19:30,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:19:30,102 INFO L93 Difference]: Finished difference Result 211 states and 248 transitions. [2021-12-16 03:19:30,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:19:30,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 106 [2021-12-16 03:19:30,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:19:30,104 INFO L225 Difference]: With dead ends: 211 [2021-12-16 03:19:30,104 INFO L226 Difference]: Without dead ends: 114 [2021-12-16 03:19:30,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:19:30,106 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 2 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:19:30,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 496 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:19:30,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-12-16 03:19:30,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-12-16 03:19:30,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 72 states have (on average 1.125) internal successors, (81), 73 states have internal predecessors, (81), 26 states have call successors, (26), 14 states have call predecessors, (26), 15 states have return successors, (26), 26 states have call predecessors, (26), 25 states have call successors, (26) [2021-12-16 03:19:30,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2021-12-16 03:19:30,119 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 106 [2021-12-16 03:19:30,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:19:30,120 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2021-12-16 03:19:30,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 03:19:30,121 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2021-12-16 03:19:30,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-16 03:19:30,122 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:19:30,122 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:19:30,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 03:19:30,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-16 03:19:30,344 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:19:30,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:19:30,344 INFO L85 PathProgramCache]: Analyzing trace with hash -810988303, now seen corresponding path program 1 times [2021-12-16 03:19:30,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:19:30,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321697739] [2021-12-16 03:19:30,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:30,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:19:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:30,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:19:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:30,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:19:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:30,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:19:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:30,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 03:19:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:30,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 03:19:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:30,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:30,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:30,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:19:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:30,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:19:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:30,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:19:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:30,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:30,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 03:19:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:30,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-16 03:19:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:30,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 03:19:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:30,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:30,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:30,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:19:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:30,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 03:19:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:30,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 03:19:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-16 03:19:31,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:19:31,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321697739] [2021-12-16 03:19:31,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321697739] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:19:31,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:19:31,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-16 03:19:31,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685639227] [2021-12-16 03:19:31,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:19:31,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-16 03:19:31,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:19:31,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-16 03:19:31,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-16 03:19:31,015 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-16 03:19:31,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:19:31,754 INFO L93 Difference]: Finished difference Result 220 states and 258 transitions. [2021-12-16 03:19:31,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 03:19:31,755 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 118 [2021-12-16 03:19:31,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:19:31,758 INFO L225 Difference]: With dead ends: 220 [2021-12-16 03:19:31,758 INFO L226 Difference]: Without dead ends: 130 [2021-12-16 03:19:31,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-12-16 03:19:31,760 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 94 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 03:19:31,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 637 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 03:19:31,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-16 03:19:31,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 119. [2021-12-16 03:19:31,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 76 states have (on average 1.131578947368421) internal successors, (86), 78 states have internal predecessors, (86), 26 states have call successors, (26), 14 states have call predecessors, (26), 16 states have return successors, (27), 26 states have call predecessors, (27), 25 states have call successors, (27) [2021-12-16 03:19:31,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2021-12-16 03:19:31,805 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 118 [2021-12-16 03:19:31,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:19:31,805 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2021-12-16 03:19:31,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-16 03:19:31,806 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2021-12-16 03:19:31,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-16 03:19:31,807 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:19:31,807 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:19:31,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 03:19:31,808 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:19:31,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:19:31,808 INFO L85 PathProgramCache]: Analyzing trace with hash -367087629, now seen corresponding path program 1 times [2021-12-16 03:19:31,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:19:31,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271663565] [2021-12-16 03:19:31,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:31,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:19:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:31,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:19:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:31,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:19:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:19:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 03:19:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 03:19:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:19:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:19:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:19:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 03:19:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-16 03:19:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 03:19:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:19:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 03:19:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 03:19:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-16 03:19:32,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:19:32,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271663565] [2021-12-16 03:19:32,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271663565] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:19:32,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:19:32,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 03:19:32,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41205130] [2021-12-16 03:19:32,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:19:32,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:19:32,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:19:32,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:19:32,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:19:32,247 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-16 03:19:32,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:19:32,574 INFO L93 Difference]: Finished difference Result 227 states and 266 transitions. [2021-12-16 03:19:32,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 03:19:32,575 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 118 [2021-12-16 03:19:32,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:19:32,576 INFO L225 Difference]: With dead ends: 227 [2021-12-16 03:19:32,576 INFO L226 Difference]: Without dead ends: 125 [2021-12-16 03:19:32,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:19:32,578 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 133 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 03:19:32,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 321 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 03:19:32,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-12-16 03:19:32,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2021-12-16 03:19:32,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 74 states have (on average 1.1081081081081081) internal successors, (82), 76 states have internal predecessors, (82), 26 states have call successors, (26), 14 states have call predecessors, (26), 16 states have return successors, (27), 26 states have call predecessors, (27), 25 states have call successors, (27) [2021-12-16 03:19:32,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2021-12-16 03:19:32,602 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 118 [2021-12-16 03:19:32,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:19:32,603 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2021-12-16 03:19:32,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-16 03:19:32,604 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2021-12-16 03:19:32,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 03:19:32,607 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:19:32,607 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:19:32,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 03:19:32,608 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:19:32,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:19:32,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1450180354, now seen corresponding path program 1 times [2021-12-16 03:19:32,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:19:32,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537629499] [2021-12-16 03:19:32,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:32,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:19:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:19:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:19:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:19:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 03:19:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 03:19:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:19:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:19:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:19:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 03:19:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:32,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 03:19:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:33,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 03:19:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:33,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 03:19:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:33,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:33,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:33,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:19:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:33,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-16 03:19:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:33,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 03:19:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:33,142 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-16 03:19:33,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:19:33,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537629499] [2021-12-16 03:19:33,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537629499] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:19:33,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:19:33,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 03:19:33,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106959337] [2021-12-16 03:19:33,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:19:33,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 03:19:33,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:19:33,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 03:19:33,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:19:33,147 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand has 10 states, 9 states have (on average 6.0) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-16 03:19:33,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:19:33,692 INFO L93 Difference]: Finished difference Result 220 states and 255 transitions. [2021-12-16 03:19:33,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 03:19:33,693 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 124 [2021-12-16 03:19:33,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:19:33,694 INFO L225 Difference]: With dead ends: 220 [2021-12-16 03:19:33,695 INFO L226 Difference]: Without dead ends: 125 [2021-12-16 03:19:33,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 03:19:33,699 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 125 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 03:19:33,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 563 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 03:19:33,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-12-16 03:19:33,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2021-12-16 03:19:33,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 74 states have (on average 1.0945945945945945) internal successors, (81), 76 states have internal predecessors, (81), 26 states have call successors, (26), 14 states have call predecessors, (26), 16 states have return successors, (27), 26 states have call predecessors, (27), 25 states have call successors, (27) [2021-12-16 03:19:33,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 134 transitions. [2021-12-16 03:19:33,711 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 134 transitions. Word has length 124 [2021-12-16 03:19:33,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:19:33,712 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 134 transitions. [2021-12-16 03:19:33,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-16 03:19:33,712 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 134 transitions. [2021-12-16 03:19:33,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-16 03:19:33,713 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:19:33,714 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:19:33,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 03:19:33,714 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:19:33,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:19:33,714 INFO L85 PathProgramCache]: Analyzing trace with hash -407882531, now seen corresponding path program 1 times [2021-12-16 03:19:33,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:19:33,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732006418] [2021-12-16 03:19:33,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:33,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:19:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:33,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:19:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:33,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:19:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:34,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:19:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:34,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 03:19:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:34,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 03:19:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:34,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:34,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:34,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:19:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:34,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:19:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:34,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:19:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:34,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:34,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 03:19:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:34,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 03:19:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:34,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:19:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:34,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 03:19:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:34,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 03:19:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:34,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:34,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:34,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:19:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:34,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-16 03:19:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:34,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 03:19:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:34,277 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-12-16 03:19:34,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:19:34,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732006418] [2021-12-16 03:19:34,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732006418] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:19:34,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813038639] [2021-12-16 03:19:34,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:34,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:19:34,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:19:34,280 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:19:34,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 03:19:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:34,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 2387 conjuncts, 63 conjunts are in the unsatisfiable core [2021-12-16 03:19:34,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:19:35,107 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-16 03:19:35,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:19:35,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813038639] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:19:35,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:19:35,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 12 [2021-12-16 03:19:35,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409989152] [2021-12-16 03:19:35,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:19:35,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:19:35,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:19:35,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:19:35,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:19:35,109 INFO L87 Difference]: Start difference. First operand 117 states and 134 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-16 03:19:35,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:19:35,204 INFO L93 Difference]: Finished difference Result 224 states and 255 transitions. [2021-12-16 03:19:35,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:19:35,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 129 [2021-12-16 03:19:35,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:19:35,205 INFO L225 Difference]: With dead ends: 224 [2021-12-16 03:19:35,205 INFO L226 Difference]: Without dead ends: 119 [2021-12-16 03:19:35,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-16 03:19:35,207 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 18 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:19:35,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 627 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:19:35,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-12-16 03:19:35,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-12-16 03:19:35,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 75 states have (on average 1.0933333333333333) internal successors, (82), 78 states have internal predecessors, (82), 26 states have call successors, (26), 14 states have call predecessors, (26), 17 states have return successors, (28), 26 states have call predecessors, (28), 25 states have call successors, (28) [2021-12-16 03:19:35,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 136 transitions. [2021-12-16 03:19:35,217 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 136 transitions. Word has length 129 [2021-12-16 03:19:35,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:19:35,218 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 136 transitions. [2021-12-16 03:19:35,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-16 03:19:35,218 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 136 transitions. [2021-12-16 03:19:35,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-16 03:19:35,219 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:19:35,220 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:19:35,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 03:19:35,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:19:35,420 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:19:35,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:19:35,421 INFO L85 PathProgramCache]: Analyzing trace with hash 118090552, now seen corresponding path program 1 times [2021-12-16 03:19:35,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:19:35,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251418132] [2021-12-16 03:19:35,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:35,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:19:35,468 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:19:35,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1553557704] [2021-12-16 03:19:35,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:35,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:19:35,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:19:35,469 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:19:35,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 03:19:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:35,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 2492 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-16 03:19:35,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:19:36,215 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-16 03:19:36,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:19:36,761 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-16 03:19:36,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:19:36,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251418132] [2021-12-16 03:19:36,762 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:19:36,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553557704] [2021-12-16 03:19:36,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553557704] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-16 03:19:36,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:19:36,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2021-12-16 03:19:36,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430344939] [2021-12-16 03:19:36,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:19:36,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:19:36,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:19:36,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:19:36,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-16 03:19:36,764 INFO L87 Difference]: Start difference. First operand 119 states and 136 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-16 03:19:36,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:19:36,847 INFO L93 Difference]: Finished difference Result 169 states and 190 transitions. [2021-12-16 03:19:36,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:19:36,849 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 135 [2021-12-16 03:19:36,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:19:36,852 INFO L225 Difference]: With dead ends: 169 [2021-12-16 03:19:36,852 INFO L226 Difference]: Without dead ends: 117 [2021-12-16 03:19:36,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-16 03:19:36,855 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 3 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:19:36,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 680 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:19:36,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-16 03:19:36,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 112. [2021-12-16 03:19:36,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 72 states have internal predecessors, (75), 26 states have call successors, (26), 14 states have call predecessors, (26), 15 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26) [2021-12-16 03:19:36,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2021-12-16 03:19:36,885 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 135 [2021-12-16 03:19:36,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:19:36,886 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2021-12-16 03:19:36,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-16 03:19:36,887 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2021-12-16 03:19:36,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-16 03:19:36,889 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:19:36,890 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:19:36,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 03:19:37,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:19:37,111 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:19:37,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:19:37,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1559546925, now seen corresponding path program 1 times [2021-12-16 03:19:37,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:19:37,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904312153] [2021-12-16 03:19:37,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:37,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:19:37,174 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:19:37,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1297453002] [2021-12-16 03:19:37,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:37,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:19:37,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:19:37,176 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:19:37,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 03:19:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:37,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 2597 conjuncts, 196 conjunts are in the unsatisfiable core [2021-12-16 03:19:37,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:19:37,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:19:38,097 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-16 03:19:38,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-16 03:19:38,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-16 03:19:38,676 INFO L354 Elim1Store]: treesize reduction 122, result has 22.3 percent of original size [2021-12-16 03:19:38,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 69 treesize of output 85 [2021-12-16 03:19:38,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-16 03:19:39,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:19:39,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-16 03:19:39,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-16 03:19:39,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-12-16 03:19:39,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-16 03:19:39,799 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-12-16 03:19:39,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2021-12-16 03:19:39,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-16 03:19:39,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 16 treesize of output 10 [2021-12-16 03:19:39,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-16 03:19:40,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-16 03:19:40,134 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_817 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_817))) (exists ((v_ArrVal_816 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_816))) (exists ((v_ArrVal_818 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_818)))) is different from true [2021-12-16 03:19:40,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-16 03:19:40,363 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_819 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_819))) (exists ((v_ArrVal_820 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_820))) (exists ((v_ArrVal_821 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_821)))) is different from true [2021-12-16 03:19:40,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:19:40,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:19:40,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 31 [2021-12-16 03:19:40,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:19:40,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:19:40,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 44 treesize of output 42 [2021-12-16 03:19:40,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:19:40,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-16 03:19:40,660 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-12-16 03:19:40,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-16 03:19:41,145 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 03:19:41,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 53 treesize of output 45 [2021-12-16 03:19:41,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 7 [2021-12-16 03:19:41,279 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 27 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 6 not checked. [2021-12-16 03:19:41,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:19:41,959 INFO L354 Elim1Store]: treesize reduction 8, result has 77.1 percent of original size [2021-12-16 03:19:41,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1702 treesize of output 1473 [2021-12-16 03:19:41,984 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 03:19:41,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1446 treesize of output 1180 [2021-12-16 03:19:42,010 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 03:19:42,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1158 treesize of output 1036