./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_array_list_length_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 53c422310795c2e7f5b0f72e5a73eee871aa1645d7b73c98001e28d2bf239333 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:23:03,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:23:03,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:23:03,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:23:03,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:23:03,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:23:03,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:23:03,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:23:03,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:23:03,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:23:03,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:23:03,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:23:03,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:23:03,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:23:03,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:23:03,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:23:03,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:23:03,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:23:04,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:23:04,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:23:04,005 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:23:04,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:23:04,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:23:04,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:23:04,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:23:04,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:23:04,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:23:04,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:23:04,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:23:04,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:23:04,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:23:04,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:23:04,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:23:04,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:23:04,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:23:04,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:23:04,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:23:04,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:23:04,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:23:04,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:23:04,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:23:04,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:23:04,025 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 09:23:04,057 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:23:04,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:23:04,058 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:23:04,058 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:23:04,059 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:23:04,059 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:23:04,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:23:04,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:23:04,060 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:23:04,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:23:04,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:23:04,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:23:04,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:23:04,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:23:04,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:23:04,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:23:04,062 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:23:04,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:23:04,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:23:04,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:23:04,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:23:04,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:23:04,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:23:04,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:23:04,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:23:04,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:23:04,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:23:04,064 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:23:04,065 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:23:04,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:23:04,065 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53c422310795c2e7f5b0f72e5a73eee871aa1645d7b73c98001e28d2bf239333 [2022-07-21 09:23:04,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:23:04,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:23:04,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:23:04,375 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:23:04,375 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:23:04,377 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i [2022-07-21 09:23:04,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6e8322af/582a9c4a00474a9c80234c9be4b1c2db/FLAGb2bc070d1 [2022-07-21 09:23:05,058 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:23:05,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i [2022-07-21 09:23:05,097 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6e8322af/582a9c4a00474a9c80234c9be4b1c2db/FLAGb2bc070d1 [2022-07-21 09:23:05,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6e8322af/582a9c4a00474a9c80234c9be4b1c2db [2022-07-21 09:23:05,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:23:05,264 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:23:05,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:23:05,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:23:05,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:23:05,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:23:05" (1/1) ... [2022-07-21 09:23:05,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d25b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:23:05, skipping insertion in model container [2022-07-21 09:23:05,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:23:05" (1/1) ... [2022-07-21 09:23:05,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:23:05,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:23:05,657 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_array_list_length_harness.i[4495,4508] [2022-07-21 09:23:05,663 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_array_list_length_harness.i[4555,4568] [2022-07-21 09:23:06,199 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:23:06,279 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,280 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,281 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,283 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,284 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,293 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,294 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,295 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,296 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,297 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,298 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,298 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,298 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,539 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:23:06,540 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:23:06,541 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:23:06,542 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:23:06,543 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:23:06,543 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:23:06,544 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:23:06,544 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:23:06,552 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:23:06,554 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:23:06,637 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,644 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:23:06,709 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:23:06,733 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_array_list_length_harness.i[4495,4508] [2022-07-21 09:23:06,734 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_array_list_length_harness.i[4555,4568] [2022-07-21 09:23:06,787 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:23:06,804 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,807 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,807 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,808 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,808 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,816 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,817 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,817 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,818 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,818 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,819 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,819 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,819 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,862 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:23:06,862 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:23:06,863 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:23:06,863 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:23:06,865 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:23:06,865 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:23:06,866 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:23:06,866 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:23:06,866 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:23:06,867 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:23:06,905 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,908 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:23:06,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:23:07,162 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:23:07,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:23:07 WrapperNode [2022-07-21 09:23:07,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:23:07,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:23:07,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:23:07,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:23:07,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:23:07" (1/1) ... [2022-07-21 09:23:07,276 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:23:07" (1/1) ... [2022-07-21 09:23:07,359 INFO L137 Inliner]: procedures = 690, calls = 1682, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 591 [2022-07-21 09:23:07,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:23:07,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:23:07,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:23:07,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:23:07,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:23:07" (1/1) ... [2022-07-21 09:23:07,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:23:07" (1/1) ... [2022-07-21 09:23:07,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:23:07" (1/1) ... [2022-07-21 09:23:07,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:23:07" (1/1) ... [2022-07-21 09:23:07,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:23:07" (1/1) ... [2022-07-21 09:23:07,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:23:07" (1/1) ... [2022-07-21 09:23:07,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:23:07" (1/1) ... [2022-07-21 09:23:07,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:23:07,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:23:07,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:23:07,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:23:07,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:23:07" (1/1) ... [2022-07-21 09:23:07,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:23:07,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:23:07,488 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) [2022-07-21 09:23:07,513 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 [2022-07-21 09:23:07,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:23:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-21 09:23:07,529 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-21 09:23:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-21 09:23:07,529 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-21 09:23:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-21 09:23:07,530 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-21 09:23:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:23:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-21 09:23:07,531 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-21 09:23:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 09:23:07,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 09:23:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:23:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:23:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 09:23:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:23:07,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:23:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-21 09:23:07,532 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-21 09:23:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-21 09:23:07,533 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-21 09:23:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-21 09:23:07,533 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-21 09:23:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-07-21 09:23:07,534 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-07-21 09:23:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 09:23:07,534 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 09:23:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:23:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 09:23:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 09:23:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-21 09:23:07,535 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-21 09:23:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-21 09:23:07,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-21 09:23:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:23:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-21 09:23:07,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-21 09:23:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:23:07,820 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:23:07,822 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:23:08,584 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:23:08,591 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:23:08,591 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 09:23:08,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:23:08 BoogieIcfgContainer [2022-07-21 09:23:08,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:23:08,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:23:08,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:23:08,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:23:08,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:23:05" (1/3) ... [2022-07-21 09:23:08,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@499f6457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:23:08, skipping insertion in model container [2022-07-21 09:23:08,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:23:07" (2/3) ... [2022-07-21 09:23:08,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@499f6457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:23:08, skipping insertion in model container [2022-07-21 09:23:08,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:23:08" (3/3) ... [2022-07-21 09:23:08,602 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_length_harness.i [2022-07-21 09:23:08,614 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:23:08,615 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:23:08,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:23:08,686 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@75c86aa7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@d60e357 [2022-07-21 09:23:08,687 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 09:23:08,691 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 78 states have (on average 1.205128205128205) internal successors, (94), 79 states have internal predecessors, (94), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-07-21 09:23:08,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-21 09:23:08,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:23:08,703 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:23:08,704 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:23:08,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:23:08,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1468528252, now seen corresponding path program 1 times [2022-07-21 09:23:08,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:23:08,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503938939] [2022-07-21 09:23:08,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:23:08,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:23:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:09,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:23:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:09,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:23:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:09,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:23:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:09,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:23:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:09,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:23:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:09,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:23:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:09,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:23:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:09,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:23:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:09,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:23:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:09,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:23:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:09,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 09:23:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:09,439 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-21 09:23:09,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:23:09,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503938939] [2022-07-21 09:23:09,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503938939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:23:09,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:23:09,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:23:09,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24877366] [2022-07-21 09:23:09,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:23:09,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:23:09,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:23:09,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:23:09,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:23:09,480 INFO L87 Difference]: Start difference. First operand has 123 states, 78 states have (on average 1.205128205128205) internal successors, (94), 79 states have internal predecessors, (94), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 09:23:09,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:23:09,857 INFO L93 Difference]: Finished difference Result 248 states and 337 transitions. [2022-07-21 09:23:09,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 09:23:09,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 71 [2022-07-21 09:23:09,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:23:09,870 INFO L225 Difference]: With dead ends: 248 [2022-07-21 09:23:09,870 INFO L226 Difference]: Without dead ends: 123 [2022-07-21 09:23:09,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:23:09,879 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 40 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:23:09,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 191 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 09:23:09,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-07-21 09:23:09,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 114. [2022-07-21 09:23:09,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 72 states have internal predecessors, (82), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-07-21 09:23:09,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 140 transitions. [2022-07-21 09:23:09,930 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 140 transitions. Word has length 71 [2022-07-21 09:23:09,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:23:09,930 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 140 transitions. [2022-07-21 09:23:09,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 09:23:09,931 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 140 transitions. [2022-07-21 09:23:09,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-21 09:23:09,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:23:09,937 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:23:09,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:23:09,938 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:23:09,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:23:09,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1288118090, now seen corresponding path program 1 times [2022-07-21 09:23:09,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:23:09,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584955749] [2022-07-21 09:23:09,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:23:09,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:23:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:10,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:23:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:10,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:23:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:10,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:23:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:10,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:23:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:10,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:23:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:10,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:23:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:10,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:23:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:10,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:23:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:10,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:23:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:10,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:23:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:10,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 09:23:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:10,223 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-21 09:23:10,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:23:10,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584955749] [2022-07-21 09:23:10,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584955749] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:23:10,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381315024] [2022-07-21 09:23:10,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:23:10,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:23:10,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:23:10,227 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) [2022-07-21 09:23:10,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 09:23:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:10,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 2064 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 09:23:10,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:23:10,743 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-21 09:23:10,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:23:10,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381315024] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:23:10,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:23:10,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-07-21 09:23:10,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055651375] [2022-07-21 09:23:10,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:23:10,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:23:10,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:23:10,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:23:10,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:23:10,746 INFO L87 Difference]: Start difference. First operand 114 states and 140 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 09:23:10,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:23:10,884 INFO L93 Difference]: Finished difference Result 193 states and 240 transitions. [2022-07-21 09:23:10,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:23:10,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 71 [2022-07-21 09:23:10,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:23:10,886 INFO L225 Difference]: With dead ends: 193 [2022-07-21 09:23:10,886 INFO L226 Difference]: Without dead ends: 116 [2022-07-21 09:23:10,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:23:10,888 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 149 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:23:10,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 403 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:23:10,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-07-21 09:23:10,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-07-21 09:23:10,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 74 states have internal predecessors, (83), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 28 states have call predecessors, (30), 28 states have call successors, (30) [2022-07-21 09:23:10,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 143 transitions. [2022-07-21 09:23:10,902 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 143 transitions. Word has length 71 [2022-07-21 09:23:10,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:23:10,902 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 143 transitions. [2022-07-21 09:23:10,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 09:23:10,903 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 143 transitions. [2022-07-21 09:23:10,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-21 09:23:10,905 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:23:10,905 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 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] [2022-07-21 09:23:10,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 09:23:11,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:23:11,133 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:23:11,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:23:11,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1724800482, now seen corresponding path program 1 times [2022-07-21 09:23:11,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:23:11,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966055568] [2022-07-21 09:23:11,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:23:11,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:23:11,235 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:23:11,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010777384] [2022-07-21 09:23:11,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:23:11,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:23:11,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:23:11,246 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) [2022-07-21 09:23:11,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 09:23:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:11,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 2205 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 09:23:11,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:23:11,689 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 09:23:11,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:23:11,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:23:11,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966055568] [2022-07-21 09:23:11,690 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:23:11,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010777384] [2022-07-21 09:23:11,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010777384] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:23:11,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:23:11,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:23:11,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484566667] [2022-07-21 09:23:11,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:23:11,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:23:11,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:23:11,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:23:11,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:23:11,693 INFO L87 Difference]: Start difference. First operand 116 states and 143 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 09:23:11,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:23:11,931 INFO L93 Difference]: Finished difference Result 182 states and 221 transitions. [2022-07-21 09:23:11,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:23:11,931 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 86 [2022-07-21 09:23:11,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:23:11,933 INFO L225 Difference]: With dead ends: 182 [2022-07-21 09:23:11,933 INFO L226 Difference]: Without dead ends: 114 [2022-07-21 09:23:11,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:23:11,935 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 151 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:23:11,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 565 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:23:11,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-07-21 09:23:11,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2022-07-21 09:23:11,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 71 states have (on average 1.1408450704225352) internal successors, (81), 72 states have internal predecessors, (81), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-07-21 09:23:11,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 139 transitions. [2022-07-21 09:23:11,947 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 139 transitions. Word has length 86 [2022-07-21 09:23:11,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:23:11,948 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 139 transitions. [2022-07-21 09:23:11,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 09:23:11,948 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 139 transitions. [2022-07-21 09:23:11,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-21 09:23:11,950 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:23:11,950 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:23:11,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 09:23:12,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-21 09:23:12,175 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:23:12,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:23:12,175 INFO L85 PathProgramCache]: Analyzing trace with hash -146566572, now seen corresponding path program 1 times [2022-07-21 09:23:12,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:23:12,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266997171] [2022-07-21 09:23:12,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:23:12,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:23:12,247 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:23:12,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268703576] [2022-07-21 09:23:12,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:23:12,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:23:12,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:23:12,249 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) [2022-07-21 09:23:12,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 09:23:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:12,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 2487 conjuncts, 242 conjunts are in the unsatisfiable core [2022-07-21 09:23:12,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:23:12,843 INFO L390 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 [2022-07-21 09:23:12,945 INFO L390 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 [2022-07-21 09:23:20,329 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-21 09:23:20,330 INFO L390 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 32 treesize of output 37 [2022-07-21 09:23:20,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:23:20,343 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 28 [2022-07-21 09:23:22,541 WARN L833 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_aws_array_list_length_harness_~#list~0#1.offset| 0) (= (mod (select (select |c_#memory_int| |c_ULTIMATE.start_aws_array_list_length_harness_~#list~0#1.base|) (+ |c_ULTIMATE.start_aws_array_list_length_harness_~#list~0#1.offset| 8)) 18446744073709551616) 0) (= (select |c_#valid| |c_ULTIMATE.start_aws_array_list_length_harness_~#list~0#1.base|) 1) (exists ((|v_aws_array_list_is_valid_~#required_size~0.base_7| Int)) (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_aws_array_list_length_harness_~#list~0#1.base|))) (let ((.cse0 (select (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_7|) 0)) (.cse2 (select .cse1 (+ |c_ULTIMATE.start_aws_array_list_length_harness_~#list~0#1.offset| 24)))) (and (not (= |v_aws_array_list_is_valid_~#required_size~0.base_7| |c_ULTIMATE.start_aws_array_list_length_harness_~#list~0#1.base|)) (or (and (= |c_ULTIMATE.start_aws_array_list_length_harness_#t~ret789#1| 1) (<= (mod .cse0 18446744073709551616) (mod (select .cse1 (+ |c_ULTIMATE.start_aws_array_list_length_harness_~#list~0#1.offset| 8)) 18446744073709551616)) (not (= (mod .cse2 18446744073709551616) 0))) (= |c_ULTIMATE.start_aws_array_list_length_harness_#t~ret789#1| 0)) (= .cse0 (* (select .cse1 (+ 16 |c_ULTIMATE.start_aws_array_list_length_harness_~#list~0#1.offset|)) .cse2))))))) is different from false [2022-07-21 09:23:23,042 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-21 09:23:23,043 INFO L390 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 [2022-07-21 09:23:27,725 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_237 Int)) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_237)) |c_#memory_int|)) is different from true [2022-07-21 09:23:33,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:23:33,919 INFO L356 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2022-07-21 09:23:33,919 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 74 [2022-07-21 09:23:34,048 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-21 09:23:34,049 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-07-21 09:23:53,620 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:23:53,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 156 treesize of output 88 [2022-07-21 09:23:53,986 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 26 proven. 60 refuted. 0 times theorem prover too weak. 5 trivial. 6 not checked. [2022-07-21 09:23:53,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:24:14,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:24:14,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266997171] [2022-07-21 09:24:14,315 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:24:14,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268703576] [2022-07-21 09:24:14,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268703576] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:24:14,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:24:14,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2022-07-21 09:24:14,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747248609] [2022-07-21 09:24:14,317 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:24:14,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-07-21 09:24:14,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:24:14,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-07-21 09:24:14,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=2265, Unknown=9, NotChecked=194, Total=2652 [2022-07-21 09:24:14,319 INFO L87 Difference]: Start difference. First operand 114 states and 139 transitions. Second operand has 48 states, 41 states have (on average 1.9024390243902438) internal successors, (78), 37 states have internal predecessors, (78), 14 states have call successors, (19), 10 states have call predecessors, (19), 13 states have return successors, (17), 13 states have call predecessors, (17), 12 states have call successors, (17) [2022-07-21 09:24:31,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:24:31,766 INFO L93 Difference]: Finished difference Result 179 states and 223 transitions. [2022-07-21 09:24:31,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-21 09:24:31,766 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 41 states have (on average 1.9024390243902438) internal successors, (78), 37 states have internal predecessors, (78), 14 states have call successors, (19), 10 states have call predecessors, (19), 13 states have return successors, (17), 13 states have call predecessors, (17), 12 states have call successors, (17) Word has length 116 [2022-07-21 09:24:31,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:24:31,769 INFO L225 Difference]: With dead ends: 179 [2022-07-21 09:24:31,769 INFO L226 Difference]: Without dead ends: 177 [2022-07-21 09:24:31,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 68 SyntacticMatches, 6 SemanticMatches, 66 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1344 ImplicationChecksByTransitivity, 40.9s TimeCoverageRelationStatistics Valid=304, Invalid=3980, Unknown=14, NotChecked=258, Total=4556 [2022-07-21 09:24:31,771 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 120 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1987 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 09:24:31,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1443 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1006 Invalid, 0 Unknown, 1987 Unchecked, 0.8s Time] [2022-07-21 09:24:31,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-07-21 09:24:31,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 171. [2022-07-21 09:24:31,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 110 states have (on average 1.1454545454545455) internal successors, (126), 113 states have internal predecessors, (126), 39 states have call successors, (39), 20 states have call predecessors, (39), 21 states have return successors, (47), 37 states have call predecessors, (47), 37 states have call successors, (47) [2022-07-21 09:24:31,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 212 transitions. [2022-07-21 09:24:31,793 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 212 transitions. Word has length 116 [2022-07-21 09:24:31,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:24:31,794 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 212 transitions. [2022-07-21 09:24:31,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 41 states have (on average 1.9024390243902438) internal successors, (78), 37 states have internal predecessors, (78), 14 states have call successors, (19), 10 states have call predecessors, (19), 13 states have return successors, (17), 13 states have call predecessors, (17), 12 states have call successors, (17) [2022-07-21 09:24:31,794 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 212 transitions. [2022-07-21 09:24:31,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-21 09:24:31,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:24:31,796 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:24:31,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 09:24:32,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:24:32,020 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:24:32,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:24:32,020 INFO L85 PathProgramCache]: Analyzing trace with hash 637355589, now seen corresponding path program 1 times [2022-07-21 09:24:32,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:24:32,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558995186] [2022-07-21 09:24:32,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:32,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:24:32,088 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:24:32,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848333621] [2022-07-21 09:24:32,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:32,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:24:32,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:24:32,090 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) [2022-07-21 09:24:32,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 09:24:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:32,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 2526 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-21 09:24:32,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:24:32,574 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:24:32,679 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-21 09:24:32,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2022-07-21 09:24:34,779 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_375 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_375)) |c_#memory_$Pointer$.base|)) is different from true [2022-07-21 09:24:51,962 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-21 09:24:51,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:24:51,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:24:51,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558995186] [2022-07-21 09:24:51,963 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:24:51,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848333621] [2022-07-21 09:24:51,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848333621] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:24:51,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:24:51,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-21 09:24:51,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44297081] [2022-07-21 09:24:51,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:24:51,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 09:24:51,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:24:51,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 09:24:51,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=255, Unknown=7, NotChecked=32, Total=342 [2022-07-21 09:24:51,966 INFO L87 Difference]: Start difference. First operand 171 states and 212 transitions. Second operand has 19 states, 17 states have (on average 3.588235294117647) internal successors, (61), 16 states have internal predecessors, (61), 8 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-07-21 09:24:52,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:24:52,409 INFO L93 Difference]: Finished difference Result 283 states and 367 transitions. [2022-07-21 09:24:52,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 09:24:52,409 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.588235294117647) internal successors, (61), 16 states have internal predecessors, (61), 8 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 122 [2022-07-21 09:24:52,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:24:52,411 INFO L225 Difference]: With dead ends: 283 [2022-07-21 09:24:52,411 INFO L226 Difference]: Without dead ends: 196 [2022-07-21 09:24:52,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=66, Invalid=393, Unknown=7, NotChecked=40, Total=506 [2022-07-21 09:24:52,413 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 86 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 635 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:24:52,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 744 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 467 Invalid, 0 Unknown, 635 Unchecked, 0.4s Time] [2022-07-21 09:24:52,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-07-21 09:24:52,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 175. [2022-07-21 09:24:52,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 112 states have (on average 1.1428571428571428) internal successors, (128), 116 states have internal predecessors, (128), 40 states have call successors, (40), 20 states have call predecessors, (40), 22 states have return successors, (49), 38 states have call predecessors, (49), 38 states have call successors, (49) [2022-07-21 09:24:52,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 217 transitions. [2022-07-21 09:24:52,432 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 217 transitions. Word has length 122 [2022-07-21 09:24:52,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:24:52,432 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 217 transitions. [2022-07-21 09:24:52,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.588235294117647) internal successors, (61), 16 states have internal predecessors, (61), 8 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-07-21 09:24:52,432 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 217 transitions. [2022-07-21 09:24:52,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-21 09:24:52,434 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:24:52,434 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:24:52,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 09:24:52,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:24:52,651 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:24:52,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:24:52,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1114350678, now seen corresponding path program 1 times [2022-07-21 09:24:52,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:24:52,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036562518] [2022-07-21 09:24:52,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:52,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:24:52,741 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:24:52,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1733226673] [2022-07-21 09:24:52,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:52,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:24:52,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:24:52,756 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) [2022-07-21 09:24:52,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 09:24:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:53,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 2492 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-21 09:24:53,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:24:53,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:24:53,445 INFO L390 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 37 [2022-07-21 09:24:53,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:24:53,451 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:24:53,451 INFO L390 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 33 treesize of output 20 [2022-07-21 09:24:53,511 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 68 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 09:24:53,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:24:54,043 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-21 09:24:54,044 INFO L390 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 30 treesize of output 25 [2022-07-21 09:24:54,052 INFO L356 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2022-07-21 09:24:54,053 INFO L390 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 24 treesize of output 12 [2022-07-21 09:24:54,093 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-21 09:24:54,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:24:54,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036562518] [2022-07-21 09:24:54,094 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:24:54,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733226673] [2022-07-21 09:24:54,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733226673] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:24:54,095 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:24:54,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2022-07-21 09:24:54,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223558151] [2022-07-21 09:24:54,095 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:24:54,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:24:54,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:24:54,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:24:54,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:24:54,097 INFO L87 Difference]: Start difference. First operand 175 states and 217 transitions. Second operand has 26 states, 23 states have (on average 3.782608695652174) internal successors, (87), 22 states have internal predecessors, (87), 9 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) [2022-07-21 09:24:55,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:24:55,158 INFO L93 Difference]: Finished difference Result 301 states and 392 transitions. [2022-07-21 09:24:55,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 09:24:55,158 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 3.782608695652174) internal successors, (87), 22 states have internal predecessors, (87), 9 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) Word has length 116 [2022-07-21 09:24:55,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:24:55,160 INFO L225 Difference]: With dead ends: 301 [2022-07-21 09:24:55,160 INFO L226 Difference]: Without dead ends: 224 [2022-07-21 09:24:55,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=172, Invalid=1310, Unknown=0, NotChecked=0, Total=1482 [2022-07-21 09:24:55,162 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 119 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 09:24:55,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1905 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1082 Invalid, 0 Unknown, 102 Unchecked, 0.7s Time] [2022-07-21 09:24:55,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-07-21 09:24:55,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 189. [2022-07-21 09:24:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 122 states have (on average 1.1311475409836065) internal successors, (138), 126 states have internal predecessors, (138), 42 states have call successors, (42), 22 states have call predecessors, (42), 24 states have return successors, (59), 40 states have call predecessors, (59), 40 states have call successors, (59) [2022-07-21 09:24:55,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 239 transitions. [2022-07-21 09:24:55,201 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 239 transitions. Word has length 116 [2022-07-21 09:24:55,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:24:55,202 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 239 transitions. [2022-07-21 09:24:55,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 3.782608695652174) internal successors, (87), 22 states have internal predecessors, (87), 9 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) [2022-07-21 09:24:55,202 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 239 transitions. [2022-07-21 09:24:55,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 09:24:55,207 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:24:55,207 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 09:24:55,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 09:24:55,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:24:55,432 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:24:55,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:24:55,432 INFO L85 PathProgramCache]: Analyzing trace with hash -293675669, now seen corresponding path program 1 times [2022-07-21 09:24:55,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:24:55,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102058787] [2022-07-21 09:24:55,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:55,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:24:55,516 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:24:55,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2102283989] [2022-07-21 09:24:55,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:55,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:24:55,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:24:55,518 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:24:55,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 09:24:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:55,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 106 conjunts are in the unsatisfiable core [2022-07-21 09:24:55,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:24:56,010 INFO L390 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 13 treesize of output 9 [2022-07-21 09:24:56,069 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-21 09:24:56,070 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-07-21 09:24:58,166 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_617 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_617)))) is different from true [2022-07-21 09:25:12,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:25:12,474 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-21 09:25:13,198 INFO L390 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 9 treesize of output 3 [2022-07-21 09:25:29,127 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_619 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_619)) |c_#memory_$Pointer$.base|)) is different from true [2022-07-21 09:25:59,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:25:59,873 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:25:59,875 INFO L356 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-07-21 09:25:59,875 INFO L390 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 18 treesize of output 1 [2022-07-21 09:25:59,877 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 70 proven. 15 refuted. 2 times theorem prover too weak. 7 trivial. 3 not checked. [2022-07-21 09:25:59,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:26:01,932 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_37| Int) (v_ArrVal_627 Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_37| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_37|) 0 v_ArrVal_627)) c_aws_array_list_length_~list.base) (+ 32 c_aws_array_list_length_~list.offset)) 0))) is different from false [2022-07-21 09:26:01,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:26:01,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102058787] [2022-07-21 09:26:01,934 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:26:01,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102283989] [2022-07-21 09:26:01,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102283989] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:26:01,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:26:01,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2022-07-21 09:26:01,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279986547] [2022-07-21 09:26:01,934 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:26:01,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-21 09:26:01,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:26:01,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-21 09:26:01,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=880, Unknown=28, NotChecked=186, Total=1190 [2022-07-21 09:26:01,936 INFO L87 Difference]: Start difference. First operand 189 states and 239 transitions. Second operand has 34 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 28 states have internal predecessors, (81), 13 states have call successors, (20), 8 states have call predecessors, (20), 11 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2022-07-21 09:26:14,103 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_617 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_617)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_619 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_619)) |c_#memory_$Pointer$.base|))) is different from true [2022-07-21 09:26:36,819 WARN L233 SmtUtils]: Spent 7.88s on a formula simplification. DAG size of input: 38 DAG size of output: 37 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-21 09:26:45,614 WARN L233 SmtUtils]: Spent 6.77s on a formula simplification. DAG size of input: 38 DAG size of output: 38 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-21 09:27:00,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:00,986 INFO L93 Difference]: Finished difference Result 328 states and 448 transitions. [2022-07-21 09:27:00,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 09:27:00,987 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 28 states have internal predecessors, (81), 13 states have call successors, (20), 8 states have call predecessors, (20), 11 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) Word has length 124 [2022-07-21 09:27:00,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:00,989 INFO L225 Difference]: With dead ends: 328 [2022-07-21 09:27:00,989 INFO L226 Difference]: Without dead ends: 251 [2022-07-21 09:27:00,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 123.8s TimeCoverageRelationStatistics Valid=235, Invalid=2177, Unknown=54, NotChecked=396, Total=2862 [2022-07-21 09:27:00,991 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 193 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 3274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1981 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 09:27:00,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 1716 Invalid, 3274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1189 Invalid, 0 Unknown, 1981 Unchecked, 0.7s Time] [2022-07-21 09:27:00,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-07-21 09:27:01,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 229. [2022-07-21 09:27:01,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 149 states have (on average 1.1409395973154361) internal successors, (170), 156 states have internal predecessors, (170), 49 states have call successors, (49), 25 states have call predecessors, (49), 30 states have return successors, (100), 47 states have call predecessors, (100), 47 states have call successors, (100) [2022-07-21 09:27:01,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 319 transitions. [2022-07-21 09:27:01,014 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 319 transitions. Word has length 124 [2022-07-21 09:27:01,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:01,015 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 319 transitions. [2022-07-21 09:27:01,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 28 states have internal predecessors, (81), 13 states have call successors, (20), 8 states have call predecessors, (20), 11 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2022-07-21 09:27:01,015 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 319 transitions. [2022-07-21 09:27:01,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-21 09:27:01,017 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:01,017 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 09:27:01,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 09:27:01,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:01,228 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:01,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:01,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1946694792, now seen corresponding path program 1 times [2022-07-21 09:27:01,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:01,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808238396] [2022-07-21 09:27:01,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:01,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:01,305 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:27:01,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1962514928] [2022-07-21 09:27:01,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:01,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:01,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:01,307 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:27:01,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 09:27:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:01,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 2497 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:27:01,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:01,737 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-21 09:27:01,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:27:01,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:01,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808238396] [2022-07-21 09:27:01,737 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:27:01,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962514928] [2022-07-21 09:27:01,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962514928] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:27:01,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:27:01,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:27:01,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062986492] [2022-07-21 09:27:01,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:27:01,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:27:01,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:27:01,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:27:01,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:27:01,739 INFO L87 Difference]: Start difference. First operand 229 states and 319 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 09:27:01,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:01,894 INFO L93 Difference]: Finished difference Result 346 states and 502 transitions. [2022-07-21 09:27:01,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:27:01,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 118 [2022-07-21 09:27:01,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:01,896 INFO L225 Difference]: With dead ends: 346 [2022-07-21 09:27:01,896 INFO L226 Difference]: Without dead ends: 241 [2022-07-21 09:27:01,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:27:01,898 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 17 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:27:01,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 478 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:27:01,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-07-21 09:27:01,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 232. [2022-07-21 09:27:01,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 152 states have (on average 1.138157894736842) internal successors, (173), 159 states have internal predecessors, (173), 49 states have call successors, (49), 25 states have call predecessors, (49), 30 states have return successors, (100), 47 states have call predecessors, (100), 47 states have call successors, (100) [2022-07-21 09:27:01,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 322 transitions. [2022-07-21 09:27:01,930 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 322 transitions. Word has length 118 [2022-07-21 09:27:01,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:01,931 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 322 transitions. [2022-07-21 09:27:01,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 09:27:01,931 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 322 transitions. [2022-07-21 09:27:01,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-21 09:27:01,933 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:01,933 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 09:27:01,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 09:27:02,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:02,134 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:02,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:02,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1175362875, now seen corresponding path program 1 times [2022-07-21 09:27:02,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:02,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841869693] [2022-07-21 09:27:02,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:02,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:02,191 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:27:02,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [166789159] [2022-07-21 09:27:02,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:02,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:02,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:02,193 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:27:02,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 09:27:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:02,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 2530 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:27:02,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:02,573 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-21 09:27:02,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:27:02,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:02,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841869693] [2022-07-21 09:27:02,574 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:27:02,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166789159] [2022-07-21 09:27:02,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166789159] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:27:02,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:27:02,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:27:02,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276447683] [2022-07-21 09:27:02,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:27:02,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:27:02,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:27:02,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:27:02,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:27:02,575 INFO L87 Difference]: Start difference. First operand 232 states and 322 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 09:27:02,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:02,601 INFO L93 Difference]: Finished difference Result 354 states and 499 transitions. [2022-07-21 09:27:02,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:27:02,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2022-07-21 09:27:02,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:02,607 INFO L225 Difference]: With dead ends: 354 [2022-07-21 09:27:02,607 INFO L226 Difference]: Without dead ends: 231 [2022-07-21 09:27:02,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:27:02,608 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 7 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:27:02,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 407 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:27:02,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-07-21 09:27:02,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 229. [2022-07-21 09:27:02,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 150 states have (on average 1.1266666666666667) internal successors, (169), 156 states have internal predecessors, (169), 49 states have call successors, (49), 25 states have call predecessors, (49), 29 states have return successors, (90), 47 states have call predecessors, (90), 47 states have call successors, (90) [2022-07-21 09:27:02,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 308 transitions. [2022-07-21 09:27:02,636 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 308 transitions. Word has length 130 [2022-07-21 09:27:02,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:02,636 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 308 transitions. [2022-07-21 09:27:02,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 09:27:02,637 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 308 transitions. [2022-07-21 09:27:02,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-21 09:27:02,638 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:02,639 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 09:27:02,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-21 09:27:02,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-21 09:27:02,855 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:02,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:02,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1375882568, now seen corresponding path program 1 times [2022-07-21 09:27:02,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:02,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063495581] [2022-07-21 09:27:02,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:02,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:02,912 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:27:02,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1327889817] [2022-07-21 09:27:02,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:02,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:02,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:02,914 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:27:02,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 09:27:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:03,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 2495 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-21 09:27:03,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:03,422 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 09:27:03,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:27:03,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:03,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063495581] [2022-07-21 09:27:03,423 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:27:03,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327889817] [2022-07-21 09:27:03,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327889817] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:27:03,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:27:03,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 09:27:03,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454606293] [2022-07-21 09:27:03,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:27:03,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 09:27:03,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:27:03,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 09:27:03,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:27:03,424 INFO L87 Difference]: Start difference. First operand 229 states and 308 transitions. Second operand has 13 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 10 states have internal predecessors, (74), 4 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-21 09:27:03,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:03,602 INFO L93 Difference]: Finished difference Result 327 states and 438 transitions. [2022-07-21 09:27:03,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 09:27:03,603 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 10 states have internal predecessors, (74), 4 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 128 [2022-07-21 09:27:03,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:03,605 INFO L225 Difference]: With dead ends: 327 [2022-07-21 09:27:03,605 INFO L226 Difference]: Without dead ends: 232 [2022-07-21 09:27:03,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:27:03,608 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 12 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:27:03,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1644 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:27:03,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-07-21 09:27:03,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 222. [2022-07-21 09:27:03,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 147 states have (on average 1.129251700680272) internal successors, (166), 153 states have internal predecessors, (166), 46 states have call successors, (46), 25 states have call predecessors, (46), 28 states have return successors, (76), 43 states have call predecessors, (76), 44 states have call successors, (76) [2022-07-21 09:27:03,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 288 transitions. [2022-07-21 09:27:03,625 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 288 transitions. Word has length 128 [2022-07-21 09:27:03,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:03,626 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 288 transitions. [2022-07-21 09:27:03,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 10 states have internal predecessors, (74), 4 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-21 09:27:03,626 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 288 transitions. [2022-07-21 09:27:03,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-21 09:27:03,628 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:03,628 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 09:27:03,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 09:27:03,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 09:27:03,843 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:03,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:03,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1514042583, now seen corresponding path program 1 times [2022-07-21 09:27:03,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:03,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425726868] [2022-07-21 09:27:03,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:03,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:03,917 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:27:03,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356033705] [2022-07-21 09:27:03,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:03,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:03,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:03,919 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:27:03,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 09:27:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:04,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 2540 conjuncts, 60 conjunts are in the unsatisfiable core [2022-07-21 09:27:04,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:04,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:27:04,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-07-21 09:27:04,594 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-21 09:27:04,594 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2022-07-21 09:27:06,680 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1040 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1040)) |c_#memory_int|)) is different from true [2022-07-21 09:27:08,330 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1040 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_1040)) |c_#memory_int|)) is different from true [2022-07-21 09:27:08,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:27:08,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-21 09:27:10,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:27:10,467 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:27:10,468 INFO L390 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 40 treesize of output 27 [2022-07-21 09:27:10,503 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 72 proven. 0 refuted. 4 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-21 09:27:10,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:27:12,611 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1048 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_55| Int)) (not (= (mod (select (select (store |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_55| (store (select |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_55|) 0 v_ArrVal_1048)) |c_ULTIMATE.start_aws_array_list_length_harness_~#list~0#1.base|) (+ 16 |c_ULTIMATE.start_aws_array_list_length_harness_~#list~0#1.offset|)) 18446744073709551616) 0))) is different from false [2022-07-21 09:27:12,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:12,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425726868] [2022-07-21 09:27:12,613 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:27:12,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356033705] [2022-07-21 09:27:12,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356033705] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:27:12,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:27:12,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-07-21 09:27:12,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073235388] [2022-07-21 09:27:12,613 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:27:12,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 09:27:12,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:27:12,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 09:27:12,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=258, Unknown=4, NotChecked=102, Total=420 [2022-07-21 09:27:12,614 INFO L87 Difference]: Start difference. First operand 222 states and 288 transitions. Second operand has 17 states, 16 states have (on average 4.8125) internal successors, (77), 16 states have internal predecessors, (77), 7 states have call successors, (19), 6 states have call predecessors, (19), 7 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2022-07-21 09:27:13,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:13,575 INFO L93 Difference]: Finished difference Result 408 states and 532 transitions. [2022-07-21 09:27:13,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 09:27:13,575 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.8125) internal successors, (77), 16 states have internal predecessors, (77), 7 states have call successors, (19), 6 states have call predecessors, (19), 7 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) Word has length 132 [2022-07-21 09:27:13,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:13,577 INFO L225 Difference]: With dead ends: 408 [2022-07-21 09:27:13,577 INFO L226 Difference]: Without dead ends: 302 [2022-07-21 09:27:13,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 184 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=106, Invalid=502, Unknown=4, NotChecked=144, Total=756 [2022-07-21 09:27:13,579 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 99 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 765 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:27:13,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 751 Invalid, 1594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 763 Invalid, 0 Unknown, 765 Unchecked, 0.6s Time] [2022-07-21 09:27:13,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-07-21 09:27:13,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 271. [2022-07-21 09:27:13,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 179 states have (on average 1.1229050279329609) internal successors, (201), 185 states have internal predecessors, (201), 55 states have call successors, (55), 32 states have call predecessors, (55), 36 states have return successors, (94), 53 states have call predecessors, (94), 53 states have call successors, (94) [2022-07-21 09:27:13,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 350 transitions. [2022-07-21 09:27:13,604 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 350 transitions. Word has length 132 [2022-07-21 09:27:13,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:13,604 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 350 transitions. [2022-07-21 09:27:13,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.8125) internal successors, (77), 16 states have internal predecessors, (77), 7 states have call successors, (19), 6 states have call predecessors, (19), 7 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2022-07-21 09:27:13,605 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 350 transitions. [2022-07-21 09:27:13,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-21 09:27:13,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:13,607 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 09:27:13,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 09:27:13,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-21 09:27:13,826 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:13,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:13,826 INFO L85 PathProgramCache]: Analyzing trace with hash 196441924, now seen corresponding path program 1 times [2022-07-21 09:27:13,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:13,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854171209] [2022-07-21 09:27:13,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:13,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:13,881 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:27:13,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068263716] [2022-07-21 09:27:13,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:13,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:13,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:13,883 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:27:13,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 09:27:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:14,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 2543 conjuncts, 59 conjunts are in the unsatisfiable core [2022-07-21 09:27:14,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:14,298 INFO L390 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 [2022-07-21 09:27:14,400 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:27:14,421 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-21 09:27:14,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-21 09:27:14,543 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-21 09:27:14,544 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 27 [2022-07-21 09:27:14,578 INFO L356 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2022-07-21 09:27:14,579 INFO L390 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 1 case distinctions, treesize of input 18 treesize of output 20 [2022-07-21 09:27:14,687 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1167 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1167))) is different from true [2022-07-21 09:27:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-21 09:27:14,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:27:15,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:15,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854171209] [2022-07-21 09:27:15,043 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:27:15,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068263716] [2022-07-21 09:27:15,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068263716] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:27:15,043 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:27:15,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-07-21 09:27:15,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161161342] [2022-07-21 09:27:15,043 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:27:15,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 09:27:15,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:27:15,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 09:27:15,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=4, NotChecked=40, Total=506 [2022-07-21 09:27:15,044 INFO L87 Difference]: Start difference. First operand 271 states and 350 transitions. Second operand has 22 states, 20 states have (on average 3.6) internal successors, (72), 18 states have internal predecessors, (72), 8 states have call successors, (20), 7 states have call predecessors, (20), 8 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2022-07-21 09:27:15,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:15,641 INFO L93 Difference]: Finished difference Result 387 states and 491 transitions. [2022-07-21 09:27:15,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 09:27:15,642 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.6) internal successors, (72), 18 states have internal predecessors, (72), 8 states have call successors, (20), 7 states have call predecessors, (20), 8 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) Word has length 133 [2022-07-21 09:27:15,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:15,644 INFO L225 Difference]: With dead ends: 387 [2022-07-21 09:27:15,644 INFO L226 Difference]: Without dead ends: 274 [2022-07-21 09:27:15,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 181 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=802, Unknown=14, NotChecked=58, Total=992 [2022-07-21 09:27:15,645 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 138 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 660 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:27:15,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 688 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 642 Invalid, 0 Unknown, 660 Unchecked, 0.4s Time] [2022-07-21 09:27:15,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-07-21 09:27:15,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 266. [2022-07-21 09:27:15,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 177 states have (on average 1.1242937853107344) internal successors, (199), 181 states have internal predecessors, (199), 53 states have call successors, (53), 33 states have call predecessors, (53), 35 states have return successors, (82), 51 states have call predecessors, (82), 51 states have call successors, (82) [2022-07-21 09:27:15,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 334 transitions. [2022-07-21 09:27:15,663 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 334 transitions. Word has length 133 [2022-07-21 09:27:15,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:15,663 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 334 transitions. [2022-07-21 09:27:15,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.6) internal successors, (72), 18 states have internal predecessors, (72), 8 states have call successors, (20), 7 states have call predecessors, (20), 8 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2022-07-21 09:27:15,663 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 334 transitions. [2022-07-21 09:27:15,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-21 09:27:15,665 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:15,665 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 09:27:15,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-21 09:27:15,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-21 09:27:15,880 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:15,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:15,880 INFO L85 PathProgramCache]: Analyzing trace with hash -463264835, now seen corresponding path program 1 times [2022-07-21 09:27:15,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:15,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140234527] [2022-07-21 09:27:15,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:15,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:15,944 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:27:15,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016721910] [2022-07-21 09:27:15,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:15,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:15,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:15,946 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:27:15,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 09:27:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:16,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 2527 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:27:16,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-21 09:27:16,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:27:16,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:16,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140234527] [2022-07-21 09:27:16,485 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:27:16,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016721910] [2022-07-21 09:27:16,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016721910] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:27:16,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:27:16,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:27:16,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716182706] [2022-07-21 09:27:16,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:27:16,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:27:16,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:27:16,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:27:16,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:27:16,486 INFO L87 Difference]: Start difference. First operand 266 states and 334 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 09:27:16,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:16,641 INFO L93 Difference]: Finished difference Result 375 states and 494 transitions. [2022-07-21 09:27:16,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:27:16,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2022-07-21 09:27:16,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:16,644 INFO L225 Difference]: With dead ends: 375 [2022-07-21 09:27:16,644 INFO L226 Difference]: Without dead ends: 270 [2022-07-21 09:27:16,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:27:16,645 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 7 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:27:16,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 503 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:27:16,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-07-21 09:27:16,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 266. [2022-07-21 09:27:16,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 177 states have (on average 1.112994350282486) internal successors, (197), 181 states have internal predecessors, (197), 53 states have call successors, (53), 33 states have call predecessors, (53), 35 states have return successors, (82), 51 states have call predecessors, (82), 51 states have call successors, (82) [2022-07-21 09:27:16,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 332 transitions. [2022-07-21 09:27:16,662 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 332 transitions. Word has length 130 [2022-07-21 09:27:16,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:16,663 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 332 transitions. [2022-07-21 09:27:16,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 09:27:16,663 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 332 transitions. [2022-07-21 09:27:16,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 09:27:16,665 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:16,665 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 09:27:16,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-21 09:27:16,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-21 09:27:16,872 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:16,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:16,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1450594124, now seen corresponding path program 1 times [2022-07-21 09:27:16,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:16,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563154537] [2022-07-21 09:27:16,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:16,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:16,921 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:27:16,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048869529] [2022-07-21 09:27:16,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:16,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:16,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:16,923 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:27:16,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 09:27:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:17,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 2496 conjuncts, 92 conjunts are in the unsatisfiable core [2022-07-21 09:27:17,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:17,540 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-21 09:27:17,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-07-21 09:27:17,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:27:17,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-21 09:27:19,664 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1385 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1384 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1385)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1384)) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-21 09:27:32,846 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-21 09:27:32,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:27:32,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:32,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563154537] [2022-07-21 09:27:32,846 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:27:32,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048869529] [2022-07-21 09:27:32,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048869529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:27:32,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:27:32,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-21 09:27:32,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231030467] [2022-07-21 09:27:32,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:27:32,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 09:27:32,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:27:32,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 09:27:32,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=331, Unknown=3, NotChecked=36, Total=420 [2022-07-21 09:27:32,848 INFO L87 Difference]: Start difference. First operand 266 states and 332 transitions. Second operand has 21 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 18 states have internal predecessors, (67), 8 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16) [2022-07-21 09:27:33,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:33,859 INFO L93 Difference]: Finished difference Result 382 states and 478 transitions. [2022-07-21 09:27:33,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 09:27:33,860 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 18 states have internal predecessors, (67), 8 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16) Word has length 124 [2022-07-21 09:27:33,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:33,861 INFO L225 Difference]: With dead ends: 382 [2022-07-21 09:27:33,861 INFO L226 Difference]: Without dead ends: 277 [2022-07-21 09:27:33,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=99, Invalid=658, Unknown=3, NotChecked=52, Total=812 [2022-07-21 09:27:33,863 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 89 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 854 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 09:27:33,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 1000 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 897 Invalid, 0 Unknown, 854 Unchecked, 0.7s Time] [2022-07-21 09:27:33,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-07-21 09:27:33,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 266. [2022-07-21 09:27:33,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 177 states have (on average 1.112994350282486) internal successors, (197), 181 states have internal predecessors, (197), 53 states have call successors, (53), 33 states have call predecessors, (53), 35 states have return successors, (81), 51 states have call predecessors, (81), 51 states have call successors, (81) [2022-07-21 09:27:33,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 331 transitions. [2022-07-21 09:27:33,895 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 331 transitions. Word has length 124 [2022-07-21 09:27:33,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:33,895 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 331 transitions. [2022-07-21 09:27:33,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 18 states have internal predecessors, (67), 8 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16) [2022-07-21 09:27:33,896 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 331 transitions. [2022-07-21 09:27:33,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-21 09:27:33,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:33,898 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 09:27:33,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-21 09:27:34,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-21 09:27:34,111 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:34,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:34,112 INFO L85 PathProgramCache]: Analyzing trace with hash -172137255, now seen corresponding path program 1 times [2022-07-21 09:27:34,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:34,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898499781] [2022-07-21 09:27:34,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:34,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:34,165 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:27:34,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1859115635] [2022-07-21 09:27:34,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:34,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:34,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:34,168 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:27:34,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-21 09:27:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:34,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 2545 conjuncts, 111 conjunts are in the unsatisfiable core [2022-07-21 09:27:34,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:34,599 INFO L390 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 [2022-07-21 09:27:34,705 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:27:34,727 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-21 09:27:34,810 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-21 09:27:34,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 27 [2022-07-21 09:27:34,847 INFO L356 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2022-07-21 09:27:34,847 INFO L390 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 1 case distinctions, treesize of input 18 treesize of output 20 [2022-07-21 09:27:34,941 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1504 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1504))) is different from true [2022-07-21 09:27:35,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:27:35,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-07-21 09:27:35,024 INFO L356 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2022-07-21 09:27:35,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24