./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_ensure_capacity_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 c12ad62b7b197015493bfb3c1dd9a5de2922d9b16e39f249961c276d8b82591b --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:50:07,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:50:07,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:50:07,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:50:07,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:50:07,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:50:07,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:50:07,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:50:07,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:50:07,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:50:07,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:50:07,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:50:07,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:50:07,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:50:07,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:50:07,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:50:07,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:50:07,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:50:07,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:50:07,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:50:07,064 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:50:07,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:50:07,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:50:07,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:50:07,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:50:07,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:50:07,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:50:07,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:50:07,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:50:07,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:50:07,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:50:07,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:50:07,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:50:07,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:50:07,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:50:07,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:50:07,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:50:07,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:50:07,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:50:07,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:50:07,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:50:07,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:50:07,080 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 21:50:07,107 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:50:07,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:50:07,108 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:50:07,108 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:50:07,109 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:50:07,109 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:50:07,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:50:07,110 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:50:07,110 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:50:07,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:50:07,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:50:07,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:50:07,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:50:07,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:50:07,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:50:07,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:50:07,111 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:50:07,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:50:07,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:50:07,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:50:07,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:50:07,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:50:07,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:50:07,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:50:07,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:50:07,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:50:07,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:50:07,114 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:50:07,114 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:50:07,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:50:07,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c12ad62b7b197015493bfb3c1dd9a5de2922d9b16e39f249961c276d8b82591b [2022-07-19 21:50:07,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:50:07,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:50:07,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:50:07,386 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:50:07,386 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:50:07,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i [2022-07-19 21:50:07,444 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9833a2cc0/3c7b546ecad545f590e24d8034a61863/FLAG320ad3302 [2022-07-19 21:50:08,024 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:50:08,024 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i [2022-07-19 21:50:08,065 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9833a2cc0/3c7b546ecad545f590e24d8034a61863/FLAG320ad3302 [2022-07-19 21:50:08,194 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9833a2cc0/3c7b546ecad545f590e24d8034a61863 [2022-07-19 21:50:08,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:50:08,198 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:50:08,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:50:08,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:50:08,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:50:08,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:50:08" (1/1) ... [2022-07-19 21:50:08,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72574520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:08, skipping insertion in model container [2022-07-19 21:50:08,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:50:08" (1/1) ... [2022-07-19 21:50:08,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:50:08,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:50:08,469 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_ensure_capacity_harness.i[4504,4517] [2022-07-19 21:50:08,474 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_ensure_capacity_harness.i[4564,4577] [2022-07-19 21:50:08,933 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 21:50:08,976 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,977 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,977 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,978 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,979 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,986 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,987 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,988 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,988 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,989 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,990 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,990 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,991 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:09,174 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 21:50:09,175 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 21:50:09,176 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 21:50:09,176 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 21:50:09,177 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 21:50:09,178 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 21:50:09,178 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 21:50:09,179 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 21:50:09,179 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 21:50:09,179 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 21:50:09,254 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:09,255 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:09,258 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:09,262 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:09,376 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:09,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:50:09,450 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:50:09,478 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_ensure_capacity_harness.i[4504,4517] [2022-07-19 21:50:09,478 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_ensure_capacity_harness.i[4564,4577] [2022-07-19 21:50:09,499 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 21:50:09,511 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:09,511 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:09,512 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:09,512 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:09,512 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:09,516 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:09,516 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:09,517 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:09,517 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:09,518 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:09,518 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:09,519 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:09,519 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:09,537 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 21:50:09,538 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 21:50:09,538 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 21:50:09,539 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 21:50:09,539 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 21:50:09,540 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 21:50:09,540 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 21:50:09,540 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 21:50:09,541 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 21:50:09,541 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 21:50:09,556 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:09,556 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:09,557 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:09,560 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:09,574 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:09,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:50:09,736 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:50:09,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:09 WrapperNode [2022-07-19 21:50:09,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:50:09,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:50:09,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:50:09,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:50:09,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:09" (1/1) ... [2022-07-19 21:50:09,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:09" (1/1) ... [2022-07-19 21:50:09,846 INFO L137 Inliner]: procedures = 691, calls = 1684, calls flagged for inlining = 52, calls inlined = 11, statements flattened = 804 [2022-07-19 21:50:09,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:50:09,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:50:09,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:50:09,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:50:09,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:09" (1/1) ... [2022-07-19 21:50:09,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:09" (1/1) ... [2022-07-19 21:50:09,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:09" (1/1) ... [2022-07-19 21:50:09,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:09" (1/1) ... [2022-07-19 21:50:09,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:09" (1/1) ... [2022-07-19 21:50:09,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:09" (1/1) ... [2022-07-19 21:50:09,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:09" (1/1) ... [2022-07-19 21:50:09,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:50:09,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:50:09,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:50:09,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:50:09,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:09" (1/1) ... [2022-07-19 21:50:09,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:50:09,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:50:09,962 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) [2022-07-19 21:50:09,981 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 [2022-07-19 21:50:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:50:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-19 21:50:09,992 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-19 21:50:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-19 21:50:09,993 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-19 21:50:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-19 21:50:09,993 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-19 21:50:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-07-19 21:50:09,993 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-07-19 21:50:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:50:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-19 21:50:09,994 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-19 21:50:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 21:50:09,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 21:50:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:50:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:50:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 21:50:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-19 21:50:09,996 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-19 21:50:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:50:09,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:50:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-19 21:50:09,997 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-19 21:50:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-19 21:50:09,997 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-19 21:50:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-19 21:50:09,997 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-19 21:50:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-19 21:50:09,997 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-19 21:50:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-07-19 21:50:09,998 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-07-19 21:50:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 21:50:09,998 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 21:50:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-19 21:50:09,999 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-19 21:50:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-07-19 21:50:09,999 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-07-19 21:50:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:50:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-07-19 21:50:09,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-07-19 21:50:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 21:50:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 21:50:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-19 21:50:10,000 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-19 21:50:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-19 21:50:10,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-19 21:50:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-07-19 21:50:10,001 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-07-19 21:50:10,001 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_ensure_capacity [2022-07-19 21:50:10,001 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_ensure_capacity [2022-07-19 21:50:10,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:50:10,001 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-19 21:50:10,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-19 21:50:10,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:50:10,175 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:50:10,177 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:50:10,749 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:50:10,759 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:50:10,760 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:50:10,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:50:10 BoogieIcfgContainer [2022-07-19 21:50:10,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:50:10,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:50:10,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:50:10,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:50:10,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:50:08" (1/3) ... [2022-07-19 21:50:10,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f67613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:50:10, skipping insertion in model container [2022-07-19 21:50:10,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:09" (2/3) ... [2022-07-19 21:50:10,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f67613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:50:10, skipping insertion in model container [2022-07-19 21:50:10,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:50:10" (3/3) ... [2022-07-19 21:50:10,776 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_ensure_capacity_harness.i [2022-07-19 21:50:10,786 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:50:10,786 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:50:10,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:50:10,844 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@3aa8a864, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4998e1fa [2022-07-19 21:50:10,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 21:50:10,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 241 states, 145 states have (on average 1.206896551724138) internal successors, (175), 146 states have internal predecessors, (175), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-07-19 21:50:10,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-19 21:50:10,859 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:50:10,860 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:50:10,860 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:50:10,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:50:10,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1087274047, now seen corresponding path program 1 times [2022-07-19 21:50:10,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:50:10,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638098015] [2022-07-19 21:50:10,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:10,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:50:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:11,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:50:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:11,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 21:50:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:11,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 21:50:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:11,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:50:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:11,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:50:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:11,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 21:50:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:11,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 21:50:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:11,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 21:50:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:11,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 21:50:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:11,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 21:50:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:11,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 21:50:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:11,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 21:50:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:11,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:50:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:11,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 21:50:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:11,521 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-19 21:50:11,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:50:11,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638098015] [2022-07-19 21:50:11,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638098015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:50:11,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:50:11,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:50:11,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466883653] [2022-07-19 21:50:11,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:50:11,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:50:11,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:50:11,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:50:11,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:50:11,553 INFO L87 Difference]: Start difference. First operand has 241 states, 145 states have (on average 1.206896551724138) internal successors, (175), 146 states have internal predecessors, (175), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-19 21:50:12,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:50:12,010 INFO L93 Difference]: Finished difference Result 502 states and 720 transitions. [2022-07-19 21:50:12,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:50:12,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 87 [2022-07-19 21:50:12,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:50:12,020 INFO L225 Difference]: With dead ends: 502 [2022-07-19 21:50:12,020 INFO L226 Difference]: Without dead ends: 257 [2022-07-19 21:50:12,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:50:12,026 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 78 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 21:50:12,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 442 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 21:50:12,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-07-19 21:50:12,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 230. [2022-07-19 21:50:12,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 136 states have (on average 1.1838235294117647) internal successors, (161), 138 states have internal predecessors, (161), 73 states have call successors, (73), 21 states have call predecessors, (73), 20 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2022-07-19 21:50:12,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 304 transitions. [2022-07-19 21:50:12,067 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 304 transitions. Word has length 87 [2022-07-19 21:50:12,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:50:12,067 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 304 transitions. [2022-07-19 21:50:12,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-19 21:50:12,068 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 304 transitions. [2022-07-19 21:50:12,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-19 21:50:12,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:50:12,070 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:50:12,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:50:12,071 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:50:12,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:50:12,071 INFO L85 PathProgramCache]: Analyzing trace with hash 672902535, now seen corresponding path program 1 times [2022-07-19 21:50:12,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:50:12,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529894902] [2022-07-19 21:50:12,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:12,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:50:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:12,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:50:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:12,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 21:50:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:12,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 21:50:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:12,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:50:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:12,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:50:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:12,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 21:50:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:12,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 21:50:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:12,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 21:50:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:12,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 21:50:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:12,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 21:50:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:12,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 21:50:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:12,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 21:50:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:12,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:50:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:12,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 21:50:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:12,319 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-19 21:50:12,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:50:12,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529894902] [2022-07-19 21:50:12,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529894902] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:50:12,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400002154] [2022-07-19 21:50:12,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:12,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:50:12,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:50:12,335 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) [2022-07-19 21:50:12,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 21:50:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:12,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 2243 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 21:50:12,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:50:12,754 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 21:50:12,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:50:12,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400002154] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:50:12,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:50:12,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-19 21:50:12,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952999992] [2022-07-19 21:50:12,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:50:12,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:50:12,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:50:12,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:50:12,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-19 21:50:12,758 INFO L87 Difference]: Start difference. First operand 230 states and 304 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-19 21:50:13,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:50:13,005 INFO L93 Difference]: Finished difference Result 436 states and 585 transitions. [2022-07-19 21:50:13,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:50:13,005 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 87 [2022-07-19 21:50:13,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:50:13,012 INFO L225 Difference]: With dead ends: 436 [2022-07-19 21:50:13,012 INFO L226 Difference]: Without dead ends: 232 [2022-07-19 21:50:13,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-07-19 21:50:13,014 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 306 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 21:50:13,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 970 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 21:50:13,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-07-19 21:50:13,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2022-07-19 21:50:13,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 137 states have (on average 1.1824817518248176) internal successors, (162), 140 states have internal predecessors, (162), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (80), 70 states have call predecessors, (80), 70 states have call successors, (80) [2022-07-19 21:50:13,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 315 transitions. [2022-07-19 21:50:13,034 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 315 transitions. Word has length 87 [2022-07-19 21:50:13,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:50:13,034 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 315 transitions. [2022-07-19 21:50:13,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-19 21:50:13,035 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 315 transitions. [2022-07-19 21:50:13,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 21:50:13,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:50:13,040 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:50:13,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 21:50:13,247 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 [2022-07-19 21:50:13,248 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:50:13,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:50:13,250 INFO L85 PathProgramCache]: Analyzing trace with hash -149436210, now seen corresponding path program 1 times [2022-07-19 21:50:13,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:50:13,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145085945] [2022-07-19 21:50:13,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:13,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:50:13,341 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:50:13,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276022064] [2022-07-19 21:50:13,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:13,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:50:13,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:50:13,359 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) [2022-07-19 21:50:13,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 21:50:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:13,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 2379 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 21:50:13,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:50:13,750 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-19 21:50:13,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:50:13,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:50:13,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145085945] [2022-07-19 21:50:13,751 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:50:13,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276022064] [2022-07-19 21:50:13,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276022064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:50:13,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:50:13,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:50:13,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218833009] [2022-07-19 21:50:13,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:50:13,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:50:13,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:50:13,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:50:13,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:50:13,756 INFO L87 Difference]: Start difference. First operand 232 states and 315 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 21:50:13,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:50:13,803 INFO L93 Difference]: Finished difference Result 443 states and 614 transitions. [2022-07-19 21:50:13,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:50:13,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 102 [2022-07-19 21:50:13,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:50:13,806 INFO L225 Difference]: With dead ends: 443 [2022-07-19 21:50:13,806 INFO L226 Difference]: Without dead ends: 237 [2022-07-19 21:50:13,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:50:13,808 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 10 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 21:50:13,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 899 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 21:50:13,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-07-19 21:50:13,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 234. [2022-07-19 21:50:13,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 139 states have (on average 1.1798561151079137) internal successors, (164), 142 states have internal predecessors, (164), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (80), 70 states have call predecessors, (80), 70 states have call successors, (80) [2022-07-19 21:50:13,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 317 transitions. [2022-07-19 21:50:13,823 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 317 transitions. Word has length 102 [2022-07-19 21:50:13,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:50:13,824 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 317 transitions. [2022-07-19 21:50:13,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 21:50:13,824 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 317 transitions. [2022-07-19 21:50:13,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 21:50:13,826 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:50:13,826 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:50:13,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 21:50:14,061 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 [2022-07-19 21:50:14,062 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:50:14,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:50:14,062 INFO L85 PathProgramCache]: Analyzing trace with hash -710135988, now seen corresponding path program 1 times [2022-07-19 21:50:14,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:50:14,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372406039] [2022-07-19 21:50:14,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:14,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:50:14,109 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:50:14,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049556603] [2022-07-19 21:50:14,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:14,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:50:14,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:50:14,124 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) [2022-07-19 21:50:14,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 21:50:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:14,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 2384 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 21:50:14,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:50:14,566 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-19 21:50:14,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:50:14,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:50:14,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372406039] [2022-07-19 21:50:14,567 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:50:14,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049556603] [2022-07-19 21:50:14,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049556603] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:50:14,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:50:14,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:50:14,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439321275] [2022-07-19 21:50:14,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:50:14,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:50:14,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:50:14,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:50:14,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:50:14,569 INFO L87 Difference]: Start difference. First operand 234 states and 317 transitions. Second operand has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-19 21:50:14,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:50:14,936 INFO L93 Difference]: Finished difference Result 432 states and 583 transitions. [2022-07-19 21:50:14,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:50:14,936 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 102 [2022-07-19 21:50:14,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:50:14,938 INFO L225 Difference]: With dead ends: 432 [2022-07-19 21:50:14,938 INFO L226 Difference]: Without dead ends: 234 [2022-07-19 21:50:14,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-19 21:50:14,939 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 354 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 21:50:14,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 1238 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 21:50:14,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-07-19 21:50:14,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2022-07-19 21:50:14,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 139 states have (on average 1.1798561151079137) internal successors, (164), 142 states have internal predecessors, (164), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (74), 70 states have call predecessors, (74), 70 states have call successors, (74) [2022-07-19 21:50:14,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 311 transitions. [2022-07-19 21:50:14,950 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 311 transitions. Word has length 102 [2022-07-19 21:50:14,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:50:14,951 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 311 transitions. [2022-07-19 21:50:14,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-19 21:50:14,951 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 311 transitions. [2022-07-19 21:50:14,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-19 21:50:14,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:50:14,952 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:50:14,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-19 21:50:15,173 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 [2022-07-19 21:50:15,174 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:50:15,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:50:15,174 INFO L85 PathProgramCache]: Analyzing trace with hash 191134547, now seen corresponding path program 2 times [2022-07-19 21:50:15,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:50:15,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573828122] [2022-07-19 21:50:15,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:15,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:50:15,215 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:50:15,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1687639386] [2022-07-19 21:50:15,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:50:15,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:50:15,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:50:15,232 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) [2022-07-19 21:50:15,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 21:50:15,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-19 21:50:15,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:50:15,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 1918 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 21:50:15,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:50:15,567 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-19 21:50:15,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:50:15,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:50:15,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573828122] [2022-07-19 21:50:15,568 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:50:15,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687639386] [2022-07-19 21:50:15,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687639386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:50:15,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:50:15,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:50:15,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816825164] [2022-07-19 21:50:15,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:50:15,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:50:15,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:50:15,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:50:15,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:50:15,570 INFO L87 Difference]: Start difference. First operand 234 states and 311 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 21:50:15,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:50:15,594 INFO L93 Difference]: Finished difference Result 409 states and 535 transitions. [2022-07-19 21:50:15,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:50:15,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 117 [2022-07-19 21:50:15,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:50:15,596 INFO L225 Difference]: With dead ends: 409 [2022-07-19 21:50:15,596 INFO L226 Difference]: Without dead ends: 239 [2022-07-19 21:50:15,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:50:15,597 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 2 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 21:50:15,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1198 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 21:50:15,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-07-19 21:50:15,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-07-19 21:50:15,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 143 states have (on average 1.1748251748251748) internal successors, (168), 146 states have internal predecessors, (168), 73 states have call successors, (73), 21 states have call predecessors, (73), 22 states have return successors, (75), 71 states have call predecessors, (75), 70 states have call successors, (75) [2022-07-19 21:50:15,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 316 transitions. [2022-07-19 21:50:15,607 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 316 transitions. Word has length 117 [2022-07-19 21:50:15,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:50:15,608 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 316 transitions. [2022-07-19 21:50:15,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 21:50:15,608 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 316 transitions. [2022-07-19 21:50:15,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 21:50:15,609 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:50:15,609 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:50:15,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 21:50:15,839 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 [2022-07-19 21:50:15,840 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:50:15,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:50:15,840 INFO L85 PathProgramCache]: Analyzing trace with hash 389087133, now seen corresponding path program 1 times [2022-07-19 21:50:15,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:50:15,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176876927] [2022-07-19 21:50:15,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:15,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:50:15,879 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:50:15,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1862912712] [2022-07-19 21:50:15,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:15,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:50:15,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:50:15,900 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) [2022-07-19 21:50:15,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 21:50:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:16,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 2529 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 21:50:16,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:50:16,418 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-19 21:50:16,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:50:16,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:50:16,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176876927] [2022-07-19 21:50:16,418 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:50:16,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862912712] [2022-07-19 21:50:16,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862912712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:50:16,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:50:16,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:50:16,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557660424] [2022-07-19 21:50:16,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:50:16,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:50:16,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:50:16,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:50:16,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:50:16,423 INFO L87 Difference]: Start difference. First operand 239 states and 316 transitions. Second operand has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2022-07-19 21:50:16,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:50:16,767 INFO L93 Difference]: Finished difference Result 439 states and 576 transitions. [2022-07-19 21:50:16,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:50:16,768 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) Word has length 123 [2022-07-19 21:50:16,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:50:16,769 INFO L225 Difference]: With dead ends: 439 [2022-07-19 21:50:16,769 INFO L226 Difference]: Without dead ends: 237 [2022-07-19 21:50:16,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-19 21:50:16,770 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 392 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 21:50:16,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1409 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 21:50:16,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-07-19 21:50:16,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2022-07-19 21:50:16,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 142 states have (on average 1.1690140845070423) internal successors, (166), 144 states have internal predecessors, (166), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (71), 71 states have call predecessors, (71), 70 states have call successors, (71) [2022-07-19 21:50:16,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 310 transitions. [2022-07-19 21:50:16,781 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 310 transitions. Word has length 123 [2022-07-19 21:50:16,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:50:16,781 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 310 transitions. [2022-07-19 21:50:16,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2022-07-19 21:50:16,782 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 310 transitions. [2022-07-19 21:50:16,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-19 21:50:16,783 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:50:16,783 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:50:16,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 21:50:16,999 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 [2022-07-19 21:50:16,999 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:50:17,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:50:17,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1195830657, now seen corresponding path program 1 times [2022-07-19 21:50:17,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:50:17,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094592245] [2022-07-19 21:50:17,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:17,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:50:17,070 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:50:17,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [88269918] [2022-07-19 21:50:17,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:17,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:50:17,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:50:17,092 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) [2022-07-19 21:50:17,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 21:50:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:17,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 2811 conjuncts, 327 conjunts are in the unsatisfiable core [2022-07-19 21:50:17,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:50:17,710 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 [2022-07-19 21:50:17,963 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 [2022-07-19 21:50:17,966 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 [2022-07-19 21:50:18,176 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 6 treesize of output 5 [2022-07-19 21:50:18,446 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-19 21:50:18,447 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 [2022-07-19 21:50:18,679 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-19 21:50:18,679 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 [2022-07-19 21:50:30,147 INFO L356 Elim1Store]: treesize reduction 91, result has 30.0 percent of original size [2022-07-19 21:50:30,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 46 treesize of output 69 [2022-07-19 21:50:30,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-19 21:50:30,742 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-07-19 21:50:30,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-07-19 21:50:33,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:50:33,562 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:50:33,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:50:33,564 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2022-07-19 21:50:33,591 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-19 21:50:33,591 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 2 case distinctions, treesize of input 16 treesize of output 18 [2022-07-19 21:51:05,818 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 28 proven. 114 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 21:51:05,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:51:12,157 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-19 21:51:18,703 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_14| Int)) (let ((.cse0 (let ((.cse1 (select |c_#memory_int| |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.base|))) (* (select .cse1 (+ |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.offset| 24)) (select .cse1 (+ |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.offset| 16)))))) (<= (mod .cse0 18446744073709551616) (mod (select (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_14| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_14|) 0 .cse0)) |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.base|) (+ |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.offset| 8)) 18446744073709551616)))) (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_14| Int)) (let ((.cse4 (+ |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.offset| 24))) (let ((.cse2 (let ((.cse5 (select |c_#memory_int| |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.base|))) (* (select .cse5 .cse4) (select .cse5 (+ |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.offset| 16)))))) (let ((.cse3 (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_14| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_14|) 0 .cse2)) |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.base|))) (or (not (<= (mod .cse2 18446744073709551616) (mod (select .cse3 (+ |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.offset| 8)) 18446744073709551616))) (not (= (mod (select .cse3 .cse4) 18446744073709551616) 0)))))))) is different from false [2022-07-19 21:51:18,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:51:18,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094592245] [2022-07-19 21:51:18,707 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:51:18,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88269918] [2022-07-19 21:51:18,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88269918] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:51:18,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:51:18,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2022-07-19 21:51:18,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939012433] [2022-07-19 21:51:18,707 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 21:51:18,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-07-19 21:51:18,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:51:18,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-07-19 21:51:18,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=4434, Unknown=35, NotChecked=134, Total=4830 [2022-07-19 21:51:18,709 INFO L87 Difference]: Start difference. First operand 237 states and 310 transitions. Second operand has 66 states, 53 states have (on average 1.8679245283018868) internal successors, (99), 48 states have internal predecessors, (99), 20 states have call successors, (24), 11 states have call predecessors, (24), 17 states have return successors, (22), 18 states have call predecessors, (22), 18 states have call successors, (22) [2022-07-19 21:51:59,278 WARN L233 SmtUtils]: Spent 10.33s on a formula simplification. DAG size of input: 88 DAG size of output: 87 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 21:52:04,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:52:04,143 INFO L93 Difference]: Finished difference Result 335 states and 440 transitions. [2022-07-19 21:52:04,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-07-19 21:52:04,143 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 53 states have (on average 1.8679245283018868) internal successors, (99), 48 states have internal predecessors, (99), 20 states have call successors, (24), 11 states have call predecessors, (24), 17 states have return successors, (22), 18 states have call predecessors, (22), 18 states have call successors, (22) Word has length 153 [2022-07-19 21:52:04,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:52:04,146 INFO L225 Difference]: With dead ends: 335 [2022-07-19 21:52:04,146 INFO L226 Difference]: Without dead ends: 333 [2022-07-19 21:52:04,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 90 SyntacticMatches, 5 SemanticMatches, 98 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2665 ImplicationChecksByTransitivity, 86.3s TimeCoverageRelationStatistics Valid=524, Invalid=9133, Unknown=49, NotChecked=194, Total=9900 [2022-07-19 21:52:04,148 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 267 mSDsluCounter, 3327 mSDsCounter, 0 mSdLazyCounter, 3746 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 3591 SdHoareTripleChecker+Invalid, 8347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 3746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4292 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-19 21:52:04,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 3591 Invalid, 8347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 3746 Invalid, 0 Unknown, 4292 Unchecked, 2.7s Time] [2022-07-19 21:52:04,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-07-19 21:52:04,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 308. [2022-07-19 21:52:04,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 189 states have (on average 1.164021164021164) internal successors, (220), 194 states have internal predecessors, (220), 86 states have call successors, (86), 29 states have call predecessors, (86), 32 states have return successors, (105), 84 states have call predecessors, (105), 83 states have call successors, (105) [2022-07-19 21:52:04,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 411 transitions. [2022-07-19 21:52:04,167 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 411 transitions. Word has length 153 [2022-07-19 21:52:04,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:52:04,184 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 411 transitions. [2022-07-19 21:52:04,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 53 states have (on average 1.8679245283018868) internal successors, (99), 48 states have internal predecessors, (99), 20 states have call successors, (24), 11 states have call predecessors, (24), 17 states have return successors, (22), 18 states have call predecessors, (22), 18 states have call successors, (22) [2022-07-19 21:52:04,184 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 411 transitions. [2022-07-19 21:52:04,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-19 21:52:04,187 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:52:04,187 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1] [2022-07-19 21:52:04,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-19 21:52:04,407 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 [2022-07-19 21:52:04,407 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:52:04,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:52:04,408 INFO L85 PathProgramCache]: Analyzing trace with hash -352820289, now seen corresponding path program 1 times [2022-07-19 21:52:04,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:52:04,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001186622] [2022-07-19 21:52:04,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:52:04,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:52:04,464 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:52:04,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953332055] [2022-07-19 21:52:04,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:52:04,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:52:04,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:52:04,466 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) [2022-07-19 21:52:04,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 21:52:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:04,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 2815 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-19 21:52:04,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:52:05,052 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-19 21:52:05,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:52:05,570 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-19 21:52:05,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:52:05,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001186622] [2022-07-19 21:52:05,570 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:52:05,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953332055] [2022-07-19 21:52:05,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953332055] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:52:05,571 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:52:05,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 21 [2022-07-19 21:52:05,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291732616] [2022-07-19 21:52:05,571 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 21:52:05,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-19 21:52:05,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:52:05,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-19 21:52:05,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2022-07-19 21:52:05,573 INFO L87 Difference]: Start difference. First operand 308 states and 411 transitions. Second operand has 21 states, 18 states have (on average 5.666666666666667) internal successors, (102), 14 states have internal predecessors, (102), 5 states have call successors, (28), 3 states have call predecessors, (28), 7 states have return successors, (28), 8 states have call predecessors, (28), 4 states have call successors, (28) [2022-07-19 21:52:05,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:52:05,985 INFO L93 Difference]: Finished difference Result 524 states and 712 transitions. [2022-07-19 21:52:05,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 21:52:05,986 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 5.666666666666667) internal successors, (102), 14 states have internal predecessors, (102), 5 states have call successors, (28), 3 states have call predecessors, (28), 7 states have return successors, (28), 8 states have call predecessors, (28), 4 states have call successors, (28) Word has length 159 [2022-07-19 21:52:05,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:52:05,987 INFO L225 Difference]: With dead ends: 524 [2022-07-19 21:52:05,988 INFO L226 Difference]: Without dead ends: 316 [2022-07-19 21:52:05,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 296 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2022-07-19 21:52:05,989 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 19 mSDsluCounter, 5309 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 5613 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 21:52:05,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 5613 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 21:52:05,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-07-19 21:52:06,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2022-07-19 21:52:06,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 195 states have (on average 1.1641025641025642) internal successors, (227), 201 states have internal predecessors, (227), 86 states have call successors, (86), 29 states have call predecessors, (86), 33 states have return successors, (119), 84 states have call predecessors, (119), 83 states have call successors, (119) [2022-07-19 21:52:06,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 432 transitions. [2022-07-19 21:52:06,003 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 432 transitions. Word has length 159 [2022-07-19 21:52:06,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:52:06,004 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 432 transitions. [2022-07-19 21:52:06,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 5.666666666666667) internal successors, (102), 14 states have internal predecessors, (102), 5 states have call successors, (28), 3 states have call predecessors, (28), 7 states have return successors, (28), 8 states have call predecessors, (28), 4 states have call successors, (28) [2022-07-19 21:52:06,004 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 432 transitions. [2022-07-19 21:52:06,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-19 21:52:06,006 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:52:06,006 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1] [2022-07-19 21:52:06,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-19 21:52:06,227 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 [2022-07-19 21:52:06,227 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:52:06,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:52:06,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1336359999, now seen corresponding path program 2 times [2022-07-19 21:52:06,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:52:06,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301610885] [2022-07-19 21:52:06,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:52:06,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:52:06,273 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:52:06,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [959965620] [2022-07-19 21:52:06,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:52:06,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:52:06,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:52:06,275 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) [2022-07-19 21:52:06,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 21:52:07,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 21:52:07,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:52:07,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 2815 conjuncts, 55 conjunts are in the unsatisfiable core [2022-07-19 21:52:07,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:52:07,480 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 109 proven. 15 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-19 21:52:07,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:52:08,182 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-19 21:52:08,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:52:08,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301610885] [2022-07-19 21:52:08,183 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:52:08,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959965620] [2022-07-19 21:52:08,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959965620] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:52:08,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:52:08,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 26 [2022-07-19 21:52:08,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743281467] [2022-07-19 21:52:08,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 21:52:08,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:52:08,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:52:08,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:52:08,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:52:08,189 INFO L87 Difference]: Start difference. First operand 315 states and 432 transitions. Second operand has 26 states, 22 states have (on average 5.2727272727272725) internal successors, (116), 18 states have internal predecessors, (116), 8 states have call successors, (35), 5 states have call predecessors, (35), 9 states have return successors, (35), 10 states have call predecessors, (35), 7 states have call successors, (35) [2022-07-19 21:52:10,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:52:10,007 INFO L93 Difference]: Finished difference Result 541 states and 739 transitions. [2022-07-19 21:52:10,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-19 21:52:10,008 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 5.2727272727272725) internal successors, (116), 18 states have internal predecessors, (116), 8 states have call successors, (35), 5 states have call predecessors, (35), 9 states have return successors, (35), 10 states have call predecessors, (35), 7 states have call successors, (35) Word has length 159 [2022-07-19 21:52:10,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:52:10,009 INFO L225 Difference]: With dead ends: 541 [2022-07-19 21:52:10,009 INFO L226 Difference]: Without dead ends: 323 [2022-07-19 21:52:10,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 291 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=155, Invalid=1737, Unknown=0, NotChecked=0, Total=1892 [2022-07-19 21:52:10,011 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 121 mSDsluCounter, 2957 mSDsCounter, 0 mSdLazyCounter, 2365 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 3234 SdHoareTripleChecker+Invalid, 2686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 230 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 21:52:10,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 3234 Invalid, 2686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2365 Invalid, 0 Unknown, 230 Unchecked, 1.4s Time] [2022-07-19 21:52:10,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-07-19 21:52:10,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 315. [2022-07-19 21:52:10,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 195 states have (on average 1.1641025641025642) internal successors, (227), 201 states have internal predecessors, (227), 86 states have call successors, (86), 29 states have call predecessors, (86), 33 states have return successors, (117), 84 states have call predecessors, (117), 83 states have call successors, (117) [2022-07-19 21:52:10,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 430 transitions. [2022-07-19 21:52:10,028 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 430 transitions. Word has length 159 [2022-07-19 21:52:10,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:52:10,028 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 430 transitions. [2022-07-19 21:52:10,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 5.2727272727272725) internal successors, (116), 18 states have internal predecessors, (116), 8 states have call successors, (35), 5 states have call predecessors, (35), 9 states have return successors, (35), 10 states have call predecessors, (35), 7 states have call successors, (35) [2022-07-19 21:52:10,029 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 430 transitions. [2022-07-19 21:52:10,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-19 21:52:10,030 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:52:10,030 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:52:10,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-19 21:52:10,239 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 [2022-07-19 21:52:10,240 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:52:10,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:52:10,240 INFO L85 PathProgramCache]: Analyzing trace with hash 939814841, now seen corresponding path program 1 times [2022-07-19 21:52:10,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:52:10,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605177290] [2022-07-19 21:52:10,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:52:10,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:52:10,284 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:52:10,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1794978069] [2022-07-19 21:52:10,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:52:10,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:52:10,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:52:10,300 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) [2022-07-19 21:52:10,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 21:52:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:10,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 2811 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 21:52:10,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:52:10,791 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-19 21:52:10,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:52:10,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:52:10,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605177290] [2022-07-19 21:52:10,791 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:52:10,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794978069] [2022-07-19 21:52:10,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794978069] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:52:10,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:52:10,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:52:10,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599185185] [2022-07-19 21:52:10,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:52:10,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:52:10,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:52:10,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:52:10,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:52:10,792 INFO L87 Difference]: Start difference. First operand 315 states and 430 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-19 21:52:10,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:52:10,994 INFO L93 Difference]: Finished difference Result 553 states and 811 transitions. [2022-07-19 21:52:10,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:52:10,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2022-07-19 21:52:10,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:52:10,998 INFO L225 Difference]: With dead ends: 553 [2022-07-19 21:52:10,999 INFO L226 Difference]: Without dead ends: 325 [2022-07-19 21:52:11,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:52:11,000 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 7 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:52:11,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1151 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 21:52:11,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-07-19 21:52:11,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 317. [2022-07-19 21:52:11,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 197 states have (on average 1.1624365482233503) internal successors, (229), 203 states have internal predecessors, (229), 86 states have call successors, (86), 29 states have call predecessors, (86), 33 states have return successors, (117), 84 states have call predecessors, (117), 83 states have call successors, (117) [2022-07-19 21:52:11,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 432 transitions. [2022-07-19 21:52:11,039 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 432 transitions. Word has length 155 [2022-07-19 21:52:11,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:52:11,039 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 432 transitions. [2022-07-19 21:52:11,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-19 21:52:11,040 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 432 transitions. [2022-07-19 21:52:11,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-19 21:52:11,041 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:52:11,041 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:52:11,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-19 21:52:11,262 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 [2022-07-19 21:52:11,262 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:52:11,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:52:11,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1180054587, now seen corresponding path program 1 times [2022-07-19 21:52:11,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:52:11,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214565899] [2022-07-19 21:52:11,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:52:11,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:52:11,311 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:52:11,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788124719] [2022-07-19 21:52:11,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:52:11,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:52:11,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:52:11,329 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) [2022-07-19 21:52:11,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-19 21:52:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:11,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 2816 conjuncts, 166 conjunts are in the unsatisfiable core [2022-07-19 21:52:11,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:52:11,988 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 [2022-07-19 21:52:11,991 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 [2022-07-19 21:52:12,709 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1221 Int) (v_ArrVal_1222 (Array Int Int)) (v_ArrVal_1219 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1221))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1222) |c_#memory_int|) (= |c_#memory_$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_1219))))) is different from true [2022-07-19 21:52:13,381 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 [2022-07-19 21:52:13,385 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 [2022-07-19 21:52:13,396 INFO L356 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-07-19 21:52:13,396 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 18 treesize of output 18 [2022-07-19 21:52:13,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-07-19 21:52:25,663 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 112 proven. 20 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-19 21:52:25,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:52:26,000 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1229 (Array Int Int)) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_67| Int)) (not (= (mod (select (select (store |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_67| v_ArrVal_1229) |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.base|) (+ |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.offset| 8)) 18446744073709551616) 0))) is different from false [2022-07-19 21:52:26,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:52:26,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214565899] [2022-07-19 21:52:26,002 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:52:26,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788124719] [2022-07-19 21:52:26,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788124719] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:52:26,002 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:52:26,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2022-07-19 21:52:26,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615618863] [2022-07-19 21:52:26,003 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 21:52:26,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-19 21:52:26,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:52:26,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-19 21:52:26,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1286, Unknown=15, NotChecked=146, Total=1560 [2022-07-19 21:52:26,005 INFO L87 Difference]: Start difference. First operand 317 states and 432 transitions. Second operand has 36 states, 31 states have (on average 2.935483870967742) internal successors, (91), 29 states have internal predecessors, (91), 12 states have call successors, (23), 8 states have call predecessors, (23), 10 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) [2022-07-19 21:52:30,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:52:30,257 INFO L93 Difference]: Finished difference Result 621 states and 873 transitions. [2022-07-19 21:52:30,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-07-19 21:52:30,258 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 31 states have (on average 2.935483870967742) internal successors, (91), 29 states have internal predecessors, (91), 12 states have call successors, (23), 8 states have call predecessors, (23), 10 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) Word has length 155 [2022-07-19 21:52:30,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:52:30,260 INFO L225 Difference]: With dead ends: 621 [2022-07-19 21:52:30,261 INFO L226 Difference]: Without dead ends: 393 [2022-07-19 21:52:30,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 162 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=345, Invalid=3927, Unknown=26, NotChecked=258, Total=4556 [2022-07-19 21:52:30,263 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 196 mSDsluCounter, 2483 mSDsCounter, 0 mSdLazyCounter, 3504 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 6326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 3504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2689 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 21:52:30,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 2748 Invalid, 6326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 3504 Invalid, 0 Unknown, 2689 Unchecked, 2.8s Time] [2022-07-19 21:52:30,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-07-19 21:52:30,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 342. [2022-07-19 21:52:30,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 214 states have (on average 1.1542056074766356) internal successors, (247), 222 states have internal predecessors, (247), 90 states have call successors, (90), 33 states have call predecessors, (90), 37 states have return successors, (149), 86 states have call predecessors, (149), 87 states have call successors, (149) [2022-07-19 21:52:30,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 486 transitions. [2022-07-19 21:52:30,287 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 486 transitions. Word has length 155 [2022-07-19 21:52:30,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:52:30,289 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 486 transitions. [2022-07-19 21:52:30,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 31 states have (on average 2.935483870967742) internal successors, (91), 29 states have internal predecessors, (91), 12 states have call successors, (23), 8 states have call predecessors, (23), 10 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) [2022-07-19 21:52:30,290 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 486 transitions. [2022-07-19 21:52:30,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-19 21:52:30,292 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:52:30,292 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:52:30,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-07-19 21:52:30,512 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 [2022-07-19 21:52:30,513 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:52:30,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:52:30,514 INFO L85 PathProgramCache]: Analyzing trace with hash -179029957, now seen corresponding path program 2 times [2022-07-19 21:52:30,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:52:30,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216911085] [2022-07-19 21:52:30,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:52:30,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:52:30,562 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:52:30,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [358815224] [2022-07-19 21:52:30,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:52:30,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:52:30,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:52:30,564 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) [2022-07-19 21:52:30,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-19 21:52:31,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 21:52:31,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:52:31,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 2816 conjuncts, 74 conjunts are in the unsatisfiable core [2022-07-19 21:52:31,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:52:31,880 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-07-19 21:52:31,880 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 38 treesize of output 20 [2022-07-19 21:52:31,883 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 21 treesize of output 13 [2022-07-19 21:52:31,885 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 18 treesize of output 10 [2022-07-19 21:52:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-19 21:52:31,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:52:31,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:52:31,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216911085] [2022-07-19 21:52:31,913 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:52:31,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358815224] [2022-07-19 21:52:31,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358815224] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:52:31,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:52:31,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-19 21:52:31,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29587008] [2022-07-19 21:52:31,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:52:31,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 21:52:31,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:52:31,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 21:52:31,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-07-19 21:52:31,915 INFO L87 Difference]: Start difference. First operand 342 states and 486 transitions. Second operand has 16 states, 15 states have (on average 4.866666666666666) internal successors, (73), 12 states have internal predecessors, (73), 5 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-19 21:52:33,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:52:33,805 INFO L93 Difference]: Finished difference Result 614 states and 888 transitions. [2022-07-19 21:52:33,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:52:33,806 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.866666666666666) internal successors, (73), 12 states have internal predecessors, (73), 5 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 155 [2022-07-19 21:52:33,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:52:33,808 INFO L225 Difference]: With dead ends: 614 [2022-07-19 21:52:33,808 INFO L226 Difference]: Without dead ends: 383 [2022-07-19 21:52:33,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2022-07-19 21:52:33,810 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 337 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 2645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 485 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 21:52:33,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 1486 Invalid, 2645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2107 Invalid, 0 Unknown, 485 Unchecked, 1.5s Time] [2022-07-19 21:52:33,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-07-19 21:52:33,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 353. [2022-07-19 21:52:33,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 222 states have (on average 1.1486486486486487) internal successors, (255), 230 states have internal predecessors, (255), 91 states have call successors, (91), 34 states have call predecessors, (91), 39 states have return successors, (162), 88 states have call predecessors, (162), 88 states have call successors, (162) [2022-07-19 21:52:33,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 508 transitions. [2022-07-19 21:52:33,849 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 508 transitions. Word has length 155 [2022-07-19 21:52:33,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:52:33,850 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 508 transitions. [2022-07-19 21:52:33,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.866666666666666) internal successors, (73), 12 states have internal predecessors, (73), 5 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-19 21:52:33,851 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 508 transitions. [2022-07-19 21:52:33,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 21:52:33,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:52:33,854 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:52:33,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-19 21:52:34,055 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 [2022-07-19 21:52:34,055 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:52:34,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:52:34,056 INFO L85 PathProgramCache]: Analyzing trace with hash 89676904, now seen corresponding path program 1 times [2022-07-19 21:52:34,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:52:34,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967286212] [2022-07-19 21:52:34,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:52:34,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:52:34,128 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:52:34,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [286435012] [2022-07-19 21:52:34,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:52:34,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:52:34,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:52:34,140 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) [2022-07-19 21:52:34,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-19 21:52:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:34,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 2859 conjuncts, 90 conjunts are in the unsatisfiable core [2022-07-19 21:52:34,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:52:37,003 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1527 Int) (v_ArrVal_1526 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1527))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1526)) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-19 21:53:04,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:53:04,281 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 31 treesize of output 19 [2022-07-19 21:53:04,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:53:04,286 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 121 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-19 21:53:04,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:53:06,565 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1543 Int) (v_ArrVal_1542 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_85| Int)) (let ((.cse0 (+ |c_aws_array_list_ensure_capacity_~list#1.offset| 32))) (or (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_85| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_85|) 0 v_ArrVal_1543)) |c_aws_array_list_ensure_capacity_~list#1.base|) .cse0) 0)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_85| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_85|) 0 v_ArrVal_1542)) |c_aws_array_list_ensure_capacity_~list#1.base|) .cse0) 0))))) is different from false [2022-07-19 21:53:06,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:53:06,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967286212] [2022-07-19 21:53:06,567 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:53:06,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286435012] [2022-07-19 21:53:06,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286435012] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:53:06,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:53:06,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-07-19 21:53:06,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48282138] [2022-07-19 21:53:06,568 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 21:53:06,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-19 21:53:06,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:53:06,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-19 21:53:06,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=287, Unknown=11, NotChecked=70, Total=420 [2022-07-19 21:53:06,568 INFO L87 Difference]: Start difference. First operand 353 states and 508 transitions. Second operand has 20 states, 18 states have (on average 5.055555555555555) internal successors, (91), 18 states have internal predecessors, (91), 8 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (23), 7 states have call predecessors, (23), 8 states have call successors, (23) [2022-07-19 21:53:28,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:53:28,650 INFO L93 Difference]: Finished difference Result 651 states and 939 transitions. [2022-07-19 21:53:28,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:53:28,651 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 5.055555555555555) internal successors, (91), 18 states have internal predecessors, (91), 8 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (23), 7 states have call predecessors, (23), 8 states have call successors, (23) Word has length 167 [2022-07-19 21:53:28,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:53:28,653 INFO L225 Difference]: With dead ends: 651 [2022-07-19 21:53:28,653 INFO L226 Difference]: Without dead ends: 409 [2022-07-19 21:53:28,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 51.7s TimeCoverageRelationStatistics Valid=128, Invalid=671, Unknown=21, NotChecked=110, Total=930 [2022-07-19 21:53:28,655 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 133 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2057 SdHoareTripleChecker+Invalid, 3533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1273 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 21:53:28,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2057 Invalid, 3533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2166 Invalid, 0 Unknown, 1273 Unchecked, 1.7s Time] [2022-07-19 21:53:28,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-07-19 21:53:28,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 361. [2022-07-19 21:53:28,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 227 states have (on average 1.145374449339207) internal successors, (260), 236 states have internal predecessors, (260), 93 states have call successors, (93), 36 states have call predecessors, (93), 40 states have return successors, (165), 88 states have call predecessors, (165), 90 states have call successors, (165) [2022-07-19 21:53:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 518 transitions. [2022-07-19 21:53:28,692 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 518 transitions. Word has length 167 [2022-07-19 21:53:28,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:53:28,692 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 518 transitions. [2022-07-19 21:53:28,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 5.055555555555555) internal successors, (91), 18 states have internal predecessors, (91), 8 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (23), 7 states have call predecessors, (23), 8 states have call successors, (23) [2022-07-19 21:53:28,692 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 518 transitions. [2022-07-19 21:53:28,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-19 21:53:28,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:53:28,694 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:53:28,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-19 21:53:28,915 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 [2022-07-19 21:53:28,915 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:53:28,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:53:28,916 INFO L85 PathProgramCache]: Analyzing trace with hash -187139840, now seen corresponding path program 1 times [2022-07-19 21:53:28,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:53:28,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114397391] [2022-07-19 21:53:28,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:53:28,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:53:28,961 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:53:28,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92388506] [2022-07-19 21:53:28,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:53:28,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:53:28,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:53:28,963 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) [2022-07-19 21:53:28,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-19 21:53:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:53:29,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 2860 conjuncts, 34 conjunts are in the unsatisfiable core [2022-07-19 21:53:29,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:53:29,606 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 15 treesize of output 7 [2022-07-19 21:53:29,609 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 15 treesize of output 7 [2022-07-19 21:53:29,624 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-07-19 21:53:29,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:53:29,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:53:29,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114397391] [2022-07-19 21:53:29,625 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:53:29,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92388506] [2022-07-19 21:53:29,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92388506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:53:29,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:53:29,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:53:29,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410988517] [2022-07-19 21:53:29,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:53:29,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:53:29,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:53:29,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:53:29,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:53:29,626 INFO L87 Difference]: Start difference. First operand 361 states and 518 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 5 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-19 21:53:30,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:53:30,070 INFO L93 Difference]: Finished difference Result 624 states and 906 transitions. [2022-07-19 21:53:30,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 21:53:30,071 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 5 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 166 [2022-07-19 21:53:30,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:53:30,073 INFO L225 Difference]: With dead ends: 624 [2022-07-19 21:53:30,073 INFO L226 Difference]: Without dead ends: 386 [2022-07-19 21:53:30,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-07-19 21:53:30,074 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 73 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 2176 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 21:53:30,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 2176 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 340 Invalid, 0 Unknown, 60 Unchecked, 0.3s Time] [2022-07-19 21:53:30,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-07-19 21:53:30,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 361. [2022-07-19 21:53:30,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 227 states have (on average 1.1365638766519823) internal successors, (258), 236 states have internal predecessors, (258), 93 states have call successors, (93), 36 states have call predecessors, (93), 40 states have return successors, (165), 88 states have call predecessors, (165), 90 states have call successors, (165) [2022-07-19 21:53:30,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 516 transitions. [2022-07-19 21:53:30,090 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 516 transitions. Word has length 166 [2022-07-19 21:53:30,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:53:30,091 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 516 transitions. [2022-07-19 21:53:30,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 5 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-19 21:53:30,091 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 516 transitions. [2022-07-19 21:53:30,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-19 21:53:30,092 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:53:30,092 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1] [2022-07-19 21:53:30,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-19 21:53:30,303 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 [2022-07-19 21:53:30,303 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:53:30,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:53:30,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1860558923, now seen corresponding path program 1 times [2022-07-19 21:53:30,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:53:30,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494697569] [2022-07-19 21:53:30,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:53:30,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:53:30,361 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:53:30,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742724762] [2022-07-19 21:53:30,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:53:30,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:53:30,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:53:30,363 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) [2022-07-19 21:53:30,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-19 21:53:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:53:30,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 2821 conjuncts, 76 conjunts are in the unsatisfiable core [2022-07-19 21:53:30,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:53:30,839 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 [2022-07-19 21:53:35,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:53:35,063 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 [2022-07-19 21:53:35,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:53:35,071 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 [2022-07-19 21:53:36,349 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1857 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1857))) (exists ((v_ArrVal_1858 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1858) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-19 21:53:36,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:53:36,660 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 16 treesize of output 18 [2022-07-19 21:53:36,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:53:36,667 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 16 treesize of output 18 [2022-07-19 21:53:36,669 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-19 21:53:36,671 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 83 proven. 4 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-19 21:53:36,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:53:36,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:53:36,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494697569] [2022-07-19 21:53:36,997 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:53:36,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742724762] [2022-07-19 21:53:36,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742724762] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:53:36,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:53:36,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-07-19 21:53:36,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417099432] [2022-07-19 21:53:36,997 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 21:53:36,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 21:53:36,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:53:36,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 21:53:36,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=193, Unknown=11, NotChecked=28, Total=272 [2022-07-19 21:53:36,998 INFO L87 Difference]: Start difference. First operand 361 states and 516 transitions. Second operand has 16 states, 15 states have (on average 5.133333333333334) internal successors, (77), 14 states have internal predecessors, (77), 5 states have call successors, (21), 5 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-19 21:53:40,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:53:40,246 INFO L93 Difference]: Finished difference Result 631 states and 902 transitions. [2022-07-19 21:53:40,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:53:40,246 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.133333333333334) internal successors, (77), 14 states have internal predecessors, (77), 5 states have call successors, (21), 5 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 157 [2022-07-19 21:53:40,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:53:40,248 INFO L225 Difference]: With dead ends: 631 [2022-07-19 21:53:40,248 INFO L226 Difference]: Without dead ends: 379 [2022-07-19 21:53:40,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 246 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=50, Invalid=247, Unknown=13, NotChecked=32, Total=342 [2022-07-19 21:53:40,250 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 102 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 3528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2099 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:53:40,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 1468 Invalid, 3528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1336 Invalid, 0 Unknown, 2099 Unchecked, 1.1s Time] [2022-07-19 21:53:40,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-07-19 21:53:40,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 361. [2022-07-19 21:53:40,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 227 states have (on average 1.1365638766519823) internal successors, (258), 236 states have internal predecessors, (258), 93 states have call successors, (93), 36 states have call predecessors, (93), 40 states have return successors, (164), 88 states have call predecessors, (164), 90 states have call successors, (164) [2022-07-19 21:53:40,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 515 transitions. [2022-07-19 21:53:40,285 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 515 transitions. Word has length 157 [2022-07-19 21:53:40,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:53:40,285 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 515 transitions. [2022-07-19 21:53:40,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.133333333333334) internal successors, (77), 14 states have internal predecessors, (77), 5 states have call successors, (21), 5 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-19 21:53:40,285 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 515 transitions. [2022-07-19 21:53:40,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-19 21:53:40,286 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:53:40,287 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:53:40,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-19 21:53:40,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:53:40,496 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:53:40,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:53:40,498 INFO L85 PathProgramCache]: Analyzing trace with hash -240524280, now seen corresponding path program 1 times [2022-07-19 21:53:40,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:53:40,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324815355] [2022-07-19 21:53:40,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:53:40,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:53:40,542 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:53:40,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1785776753] [2022-07-19 21:53:40,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:53:40,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:53:40,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:53:40,557 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:53:40,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-19 21:53:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:53:41,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 2861 conjuncts, 74 conjunts are in the unsatisfiable core [2022-07-19 21:53:41,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:53:41,079 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 [2022-07-19 21:53:45,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:53:45,415 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 [2022-07-19 21:53:45,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:53:45,421 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 [2022-07-19 21:53:46,463 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2054 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2054) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2055 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2055)))) is different from true [2022-07-19 21:53:46,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:53:46,567 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 16 treesize of output 18 [2022-07-19 21:53:46,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:53:46,570 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 16 treesize of output 18 [2022-07-19 21:53:46,577 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-19 21:53:46,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-19 21:53:46,689 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 15 treesize of output 7 [2022-07-19 21:53:46,691 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 15 treesize of output 7 [2022-07-19 21:53:46,711 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 97 proven. 8 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-19 21:53:46,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:53:46,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:53:46,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324815355] [2022-07-19 21:53:46,973 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:53:46,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785776753] [2022-07-19 21:53:46,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785776753] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:53:46,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:53:46,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-07-19 21:53:46,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842821226] [2022-07-19 21:53:46,973 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 21:53:46,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-19 21:53:46,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:53:46,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-19 21:53:46,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=250, Unknown=9, NotChecked=32, Total=342 [2022-07-19 21:53:46,975 INFO L87 Difference]: Start difference. First operand 361 states and 515 transitions. Second operand has 17 states, 16 states have (on average 4.875) internal successors, (78), 14 states have internal predecessors, (78), 6 states have call successors, (22), 6 states have call predecessors, (22), 7 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2022-07-19 21:53:51,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:53:51,336 INFO L93 Difference]: Finished difference Result 624 states and 889 transitions. [2022-07-19 21:53:51,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:53:51,337 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.875) internal successors, (78), 14 states have internal predecessors, (78), 6 states have call successors, (22), 6 states have call predecessors, (22), 7 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) Word has length 162 [2022-07-19 21:53:51,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:53:51,339 INFO L225 Difference]: With dead ends: 624 [2022-07-19 21:53:51,339 INFO L226 Difference]: Without dead ends: 379 [2022-07-19 21:53:51,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 255 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=74, Invalid=379, Unknown=13, NotChecked=40, Total=506 [2022-07-19 21:53:51,341 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 178 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 2650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1211 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 21:53:51,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1147 Invalid, 2650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1251 Invalid, 0 Unknown, 1211 Unchecked, 0.9s Time] [2022-07-19 21:53:51,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-07-19 21:53:51,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 361. [2022-07-19 21:53:51,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 227 states have (on average 1.1365638766519823) internal successors, (258), 236 states have internal predecessors, (258), 93 states have call successors, (93), 36 states have call predecessors, (93), 40 states have return successors, (163), 88 states have call predecessors, (163), 90 states have call successors, (163) [2022-07-19 21:53:51,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 514 transitions. [2022-07-19 21:53:51,359 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 514 transitions. Word has length 162 [2022-07-19 21:53:51,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:53:51,360 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 514 transitions. [2022-07-19 21:53:51,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.875) internal successors, (78), 14 states have internal predecessors, (78), 6 states have call successors, (22), 6 states have call predecessors, (22), 7 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2022-07-19 21:53:51,360 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 514 transitions. [2022-07-19 21:53:51,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-19 21:53:51,361 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:53:51,361 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2022-07-19 21:53:51,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-19 21:53:51,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-19 21:53:51,583 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:53:51,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:53:51,587 INFO L85 PathProgramCache]: Analyzing trace with hash -422116935, now seen corresponding path program 1 times [2022-07-19 21:53:51,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:53:51,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919588468] [2022-07-19 21:53:51,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:53:51,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:53:51,669 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:53:51,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [957950601] [2022-07-19 21:53:51,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:53:51,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:53:51,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:53:51,684 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:53:51,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-19 21:53:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:53:52,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 2820 conjuncts, 82 conjunts are in the unsatisfiable core [2022-07-19 21:53:52,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:53:54,504 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2199 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2198 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2198)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$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_2199))))) is different from true [2022-07-19 21:54:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 121 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-19 21:54:28,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:54:30,944 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_147| Int) (v_ArrVal_2214 Int)) (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_147| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_147|) 0 v_ArrVal_2214)) |c_aws_array_list_ensure_capacity_~list#1.base|) (+ |c_aws_array_list_ensure_capacity_~list#1.offset| 32)) 0)) (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_147| Int) (v_ArrVal_2215 Int)) (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_147| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_147|) 0 v_ArrVal_2215)) |c_aws_array_list_ensure_capacity_~list#1.base|) (+ |c_aws_array_list_ensure_capacity_~list#1.offset| 32)) 0))) is different from false [2022-07-19 21:54:30,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:54:30,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919588468] [2022-07-19 21:54:30,946 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:54:30,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957950601] [2022-07-19 21:54:30,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957950601] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:54:30,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:54:30,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-07-19 21:54:30,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492905323] [2022-07-19 21:54:30,946 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 21:54:30,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-19 21:54:30,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:54:30,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-19 21:54:30,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=287, Unknown=11, NotChecked=70, Total=420 [2022-07-19 21:54:30,947 INFO L87 Difference]: Start difference. First operand 361 states and 514 transitions. Second operand has 20 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 8 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22)