./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 791161d1 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-?-791161d [2022-07-22 22:04:07,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:04:07,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:04:07,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:04:07,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:04:07,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:04:07,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:04:07,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:04:07,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:04:07,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:04:07,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:04:07,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:04:07,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:04:07,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:04:07,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:04:07,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:04:07,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:04:07,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:04:07,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:04:07,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:04:07,600 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:04:07,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:04:07,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:04:07,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:04:07,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:04:07,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:04:07,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:04:07,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:04:07,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:04:07,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:04:07,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:04:07,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:04:07,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:04:07,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:04:07,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:04:07,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:04:07,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:04:07,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:04:07,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:04:07,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:04:07,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:04:07,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:04:07,617 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 22:04:07,640 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:04:07,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:04:07,641 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:04:07,641 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:04:07,642 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:04:07,642 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:04:07,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:04:07,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:04:07,643 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:04:07,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:04:07,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 22:04:07,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:04:07,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:04:07,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:04:07,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:04:07,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:04:07,645 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:04:07,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:04:07,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:04:07,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:04:07,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:04:07,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:04:07,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:04:07,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:04:07,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:04:07,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 22:04:07,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 22:04:07,647 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:04:07,647 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:04:07,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:04:07,648 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c12ad62b7b197015493bfb3c1dd9a5de2922d9b16e39f249961c276d8b82591b [2022-07-22 22:04:07,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:04:07,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:04:07,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:04:07,894 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:04:07,895 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:04:07,896 INFO L432 ainManager$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 [2022-07-22 22:04:07,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f3fe895a/37c358bff1ca40a384f57e75c430ffc2/FLAGf9a054e5d [2022-07-22 22:04:08,519 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:04:08,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i [2022-07-22 22:04:08,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f3fe895a/37c358bff1ca40a384f57e75c430ffc2/FLAGf9a054e5d [2022-07-22 22:04:08,986 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f3fe895a/37c358bff1ca40a384f57e75c430ffc2 [2022-07-22 22:04:08,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:04:08,989 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:04:08,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:04:08,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:04:08,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:04:08,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:04:08" (1/1) ... [2022-07-22 22:04:08,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@744c8ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:08, skipping insertion in model container [2022-07-22 22:04:08,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:04:08" (1/1) ... [2022-07-22 22:04:09,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:04:09,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:04:09,288 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] [2022-07-22 22:04:09,292 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] [2022-07-22 22:04:09,746 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:04:09,804 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:09,805 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:09,805 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:09,807 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:09,808 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:09,820 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:09,820 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:09,822 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:09,822 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:09,823 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:09,824 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:09,825 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:09,825 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:09,987 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:04:09,987 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:04:09,988 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:04:09,989 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:04:09,991 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:04:09,991 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:04:09,992 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:04:09,993 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:04:09,994 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:04:09,994 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:04:10,085 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:10,093 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:10,097 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:10,103 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:10,147 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:10,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:04:10,189 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 22:04:10,222 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] [2022-07-22 22:04:10,223 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] [2022-07-22 22:04:10,261 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:04:10,271 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:10,274 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:10,275 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:10,275 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:10,276 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:10,280 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:10,281 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:10,282 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:10,282 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:10,282 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:10,283 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:10,283 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:10,283 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:10,304 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:04:10,305 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:04:10,306 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:04:10,307 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:04:10,307 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:04:10,307 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:04:10,308 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:04:10,308 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:04:10,309 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:04:10,309 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:04:10,338 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:10,339 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:10,339 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:10,342 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:10,363 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:10,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:04:10,536 INFO L208 MainTranslator]: Completed translation [2022-07-22 22:04:10,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:10 WrapperNode [2022-07-22 22:04:10,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 22:04:10,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 22:04:10,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 22:04:10,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 22:04:10,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:10" (1/1) ... [2022-07-22 22:04:10,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:10" (1/1) ... [2022-07-22 22:04:10,709 INFO L137 Inliner]: procedures = 691, calls = 1684, calls flagged for inlining = 52, calls inlined = 11, statements flattened = 804 [2022-07-22 22:04:10,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 22:04:10,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 22:04:10,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 22:04:10,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 22:04:10,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:10" (1/1) ... [2022-07-22 22:04:10,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:10" (1/1) ... [2022-07-22 22:04:10,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:10" (1/1) ... [2022-07-22 22:04:10,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:10" (1/1) ... [2022-07-22 22:04:10,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:10" (1/1) ... [2022-07-22 22:04:10,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:10" (1/1) ... [2022-07-22 22:04:10,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:10" (1/1) ... [2022-07-22 22:04:10,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 22:04:10,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 22:04:10,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 22:04:10,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 22:04:10,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:10" (1/1) ... [2022-07-22 22:04:10,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:04:10,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:04:10,854 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) [2022-07-22 22:04:10,856 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 [2022-07-22 22:04:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 22:04:10,891 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-22 22:04:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-22 22:04:10,891 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-22 22:04:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-22 22:04:10,891 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-22 22:04:10,892 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-22 22:04:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-07-22 22:04:10,892 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-07-22 22:04:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 22:04:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-22 22:04:10,893 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-22 22:04:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 22:04:10,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 22:04:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 22:04:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 22:04:10,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 22:04:10,894 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-22 22:04:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-22 22:04:10,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 22:04:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 22:04:10,894 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-22 22:04:10,895 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-22 22:04:10,895 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-22 22:04:10,895 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-22 22:04:10,895 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-22 22:04:10,895 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-22 22:04:10,895 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-22 22:04:10,895 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-22 22:04:10,895 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-07-22 22:04:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-07-22 22:04:10,896 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 22:04:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 22:04:10,896 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-22 22:04:10,897 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-22 22:04:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-07-22 22:04:10,898 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-07-22 22:04:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 22:04:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-07-22 22:04:10,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-07-22 22:04:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 22:04:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 22:04:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-22 22:04:10,899 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-22 22:04:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-22 22:04:10,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-22 22:04:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-07-22 22:04:10,899 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-07-22 22:04:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_ensure_capacity [2022-07-22 22:04:10,902 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_ensure_capacity [2022-07-22 22:04:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 22:04:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-22 22:04:10,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-22 22:04:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 22:04:11,158 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 22:04:11,160 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 22:04:11,727 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 22:04:11,732 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 22:04:11,733 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 22:04:11,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:04:11 BoogieIcfgContainer [2022-07-22 22:04:11,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 22:04:11,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 22:04:11,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 22:04:11,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 22:04:11,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:04:08" (1/3) ... [2022-07-22 22:04:11,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c46922f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:04:11, skipping insertion in model container [2022-07-22 22:04:11,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:10" (2/3) ... [2022-07-22 22:04:11,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c46922f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:04:11, skipping insertion in model container [2022-07-22 22:04:11,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:04:11" (3/3) ... [2022-07-22 22:04:11,740 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_ensure_capacity_harness.i [2022-07-22 22:04:11,749 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 22:04:11,749 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 22:04:11,781 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 22:04:11,786 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@77ee9259, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@cef6239 [2022-07-22 22:04:11,786 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 22:04:11,789 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) [2022-07-22 22:04:11,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-22 22:04:11,797 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:04:11,798 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] [2022-07-22 22:04:11,798 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:04:11,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:04:11,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1087274047, now seen corresponding path program 1 times [2022-07-22 22:04:11,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:04:11,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806114598] [2022-07-22 22:04:11,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:11,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:04:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:12,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:04:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:12,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:04:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:12,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:04:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:12,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:04:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:12,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:04:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:12,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 22:04:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:12,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 22:04:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:12,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:04:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:12,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:04:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:12,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:04:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:12,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:04:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:12,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 22:04:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:12,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:04:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:12,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:04:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:12,329 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-22 22:04:12,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:04:12,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806114598] [2022-07-22 22:04:12,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806114598] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:04:12,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:04:12,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:04:12,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096731301] [2022-07-22 22:04:12,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:04:12,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:04:12,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:04:12,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:04:12,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:04:12,354 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) [2022-07-22 22:04:12,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:04:12,847 INFO L93 Difference]: Finished difference Result 502 states and 720 transitions. [2022-07-22 22:04:12,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:04:12,849 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 [2022-07-22 22:04:12,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:04:12,857 INFO L225 Difference]: With dead ends: 502 [2022-07-22 22:04:12,858 INFO L226 Difference]: Without dead ends: 257 [2022-07-22 22:04:12,862 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 [2022-07-22 22:04:12,864 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 78 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2022-07-22 22:04:12,864 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] [2022-07-22 22:04:12,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-07-22 22:04:12,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 230. [2022-07-22 22:04:12,905 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) [2022-07-22 22:04:12,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 304 transitions. [2022-07-22 22:04:12,908 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 304 transitions. Word has length 87 [2022-07-22 22:04:12,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:04:12,908 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 304 transitions. [2022-07-22 22:04:12,909 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) [2022-07-22 22:04:12,909 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 304 transitions. [2022-07-22 22:04:12,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-22 22:04:12,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:04:12,911 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] [2022-07-22 22:04:12,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 22:04:12,912 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:04:12,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:04:12,912 INFO L85 PathProgramCache]: Analyzing trace with hash 672902535, now seen corresponding path program 1 times [2022-07-22 22:04:12,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:04:12,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395254191] [2022-07-22 22:04:12,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:12,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:04:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:13,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:04:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:13,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:04:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:13,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:04:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:13,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:04:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:13,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:04:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:13,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 22:04:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:13,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 22:04:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:13,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:04:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:13,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:04:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:13,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:04:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:13,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:04:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:13,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 22:04:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:13,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:04:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:13,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:04:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-22 22:04:13,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:04:13,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395254191] [2022-07-22 22:04:13,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395254191] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:04:13,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437647562] [2022-07-22 22:04:13,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:13,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:04:13,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:04:13,244 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) [2022-07-22 22:04:13,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 22:04:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:13,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 2243 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 22:04:13,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:04:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 22:04:13,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:04:13,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437647562] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:04:13,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:04:13,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-22 22:04:13,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674774067] [2022-07-22 22:04:13,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:04:13,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:04:13,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:04:13,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:04:13,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-22 22:04:13,721 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) [2022-07-22 22:04:13,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:04:13,924 INFO L93 Difference]: Finished difference Result 436 states and 585 transitions. [2022-07-22 22:04:13,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:04:13,924 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 [2022-07-22 22:04:13,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:04:13,926 INFO L225 Difference]: With dead ends: 436 [2022-07-22 22:04:13,926 INFO L226 Difference]: Without dead ends: 232 [2022-07-22 22:04:13,927 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 [2022-07-22 22:04:13,928 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 [2022-07-22 22:04:13,928 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] [2022-07-22 22:04:13,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-07-22 22:04:13,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2022-07-22 22:04:13,943 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) [2022-07-22 22:04:13,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 315 transitions. [2022-07-22 22:04:13,944 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 315 transitions. Word has length 87 [2022-07-22 22:04:13,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:04:13,945 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 315 transitions. [2022-07-22 22:04:13,945 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) [2022-07-22 22:04:13,945 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 315 transitions. [2022-07-22 22:04:13,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 22:04:13,946 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:04:13,946 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] [2022-07-22 22:04:13,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 22:04:14,182 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 [2022-07-22 22:04:14,182 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:04:14,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:04:14,183 INFO L85 PathProgramCache]: Analyzing trace with hash -149436210, now seen corresponding path program 1 times [2022-07-22 22:04:14,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:04:14,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632660502] [2022-07-22 22:04:14,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:14,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:04:14,226 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:04:14,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1912189303] [2022-07-22 22:04:14,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:14,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:04:14,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:04:14,232 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) [2022-07-22 22:04:14,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 22:04:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:14,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 2379 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:04:14,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:04:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-22 22:04:14,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:04:14,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:04:14,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632660502] [2022-07-22 22:04:14,647 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:04:14,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912189303] [2022-07-22 22:04:14,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912189303] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:04:14,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:04:14,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 22:04:14,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132874253] [2022-07-22 22:04:14,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:04:14,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:04:14,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:04:14,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:04:14,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:04:14,649 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) [2022-07-22 22:04:14,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:04:14,673 INFO L93 Difference]: Finished difference Result 443 states and 614 transitions. [2022-07-22 22:04:14,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:04:14,674 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 [2022-07-22 22:04:14,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:04:14,676 INFO L225 Difference]: With dead ends: 443 [2022-07-22 22:04:14,676 INFO L226 Difference]: Without dead ends: 237 [2022-07-22 22:04:14,677 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 [2022-07-22 22:04:14,677 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 [2022-07-22 22:04:14,678 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] [2022-07-22 22:04:14,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-07-22 22:04:14,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 234. [2022-07-22 22:04:14,690 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) [2022-07-22 22:04:14,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 317 transitions. [2022-07-22 22:04:14,691 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 317 transitions. Word has length 102 [2022-07-22 22:04:14,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:04:14,692 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 317 transitions. [2022-07-22 22:04:14,692 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) [2022-07-22 22:04:14,692 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 317 transitions. [2022-07-22 22:04:14,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 22:04:14,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:04:14,693 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] [2022-07-22 22:04:14,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 22:04:14,925 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 [2022-07-22 22:04:14,925 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:04:14,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:04:14,926 INFO L85 PathProgramCache]: Analyzing trace with hash -710135988, now seen corresponding path program 1 times [2022-07-22 22:04:14,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:04:14,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305372265] [2022-07-22 22:04:14,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:14,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:04:14,968 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:04:14,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925798565] [2022-07-22 22:04:14,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:14,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:04:14,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:04:14,987 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) [2022-07-22 22:04:14,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 22:04:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:15,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 2384 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 22:04:15,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:04:15,408 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 22:04:15,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:04:15,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:04:15,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305372265] [2022-07-22 22:04:15,411 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:04:15,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925798565] [2022-07-22 22:04:15,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925798565] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:04:15,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:04:15,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 22:04:15,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232196513] [2022-07-22 22:04:15,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:04:15,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:04:15,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:04:15,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:04:15,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:04:15,414 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) [2022-07-22 22:04:15,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:04:15,755 INFO L93 Difference]: Finished difference Result 432 states and 583 transitions. [2022-07-22 22:04:15,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:04:15,755 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 [2022-07-22 22:04:15,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:04:15,757 INFO L225 Difference]: With dead ends: 432 [2022-07-22 22:04:15,757 INFO L226 Difference]: Without dead ends: 234 [2022-07-22 22:04:15,758 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 [2022-07-22 22:04:15,759 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 354 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-07-22 22:04:15,759 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] [2022-07-22 22:04:15,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-07-22 22:04:15,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2022-07-22 22:04:15,771 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) [2022-07-22 22:04:15,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 311 transitions. [2022-07-22 22:04:15,773 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 311 transitions. Word has length 102 [2022-07-22 22:04:15,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:04:15,773 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 311 transitions. [2022-07-22 22:04:15,774 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) [2022-07-22 22:04:15,774 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 311 transitions. [2022-07-22 22:04:15,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-22 22:04:15,775 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:04:15,775 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] [2022-07-22 22:04:15,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 22:04:15,996 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 [2022-07-22 22:04:15,996 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:04:15,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:04:15,997 INFO L85 PathProgramCache]: Analyzing trace with hash 191134547, now seen corresponding path program 2 times [2022-07-22 22:04:15,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:04:15,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546681500] [2022-07-22 22:04:15,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:15,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:04:16,041 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:04:16,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380729931] [2022-07-22 22:04:16,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:04:16,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:04:16,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:04:16,043 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) [2022-07-22 22:04:16,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 22:04:16,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 22:04:16,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:04:16,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 1918 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 22:04:16,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:04:16,412 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-22 22:04:16,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:04:16,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:04:16,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546681500] [2022-07-22 22:04:16,413 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:04:16,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380729931] [2022-07-22 22:04:16,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380729931] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:04:16,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:04:16,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:04:16,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123194678] [2022-07-22 22:04:16,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:04:16,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:04:16,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:04:16,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:04:16,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:04:16,415 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) [2022-07-22 22:04:16,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:04:16,437 INFO L93 Difference]: Finished difference Result 409 states and 535 transitions. [2022-07-22 22:04:16,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:04:16,437 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 [2022-07-22 22:04:16,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:04:16,439 INFO L225 Difference]: With dead ends: 409 [2022-07-22 22:04:16,439 INFO L226 Difference]: Without dead ends: 239 [2022-07-22 22:04:16,439 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 [2022-07-22 22:04:16,440 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 [2022-07-22 22:04:16,440 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] [2022-07-22 22:04:16,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-07-22 22:04:16,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-07-22 22:04:16,448 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) [2022-07-22 22:04:16,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 316 transitions. [2022-07-22 22:04:16,449 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 316 transitions. Word has length 117 [2022-07-22 22:04:16,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:04:16,450 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 316 transitions. [2022-07-22 22:04:16,450 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) [2022-07-22 22:04:16,450 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 316 transitions. [2022-07-22 22:04:16,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 22:04:16,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:04:16,451 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] [2022-07-22 22:04:16,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-22 22:04:16,688 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 [2022-07-22 22:04:16,688 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:04:16,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:04:16,689 INFO L85 PathProgramCache]: Analyzing trace with hash 389087133, now seen corresponding path program 1 times [2022-07-22 22:04:16,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:04:16,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288996996] [2022-07-22 22:04:16,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:16,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:04:16,734 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:04:16,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1792694785] [2022-07-22 22:04:16,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:16,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:04:16,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:04:16,736 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) [2022-07-22 22:04:16,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 22:04:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:17,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 2529 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 22:04:17,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:04:17,194 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-22 22:04:17,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:04:17,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:04:17,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288996996] [2022-07-22 22:04:17,194 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:04:17,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792694785] [2022-07-22 22:04:17,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792694785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:04:17,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:04:17,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 22:04:17,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510201890] [2022-07-22 22:04:17,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:04:17,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:04:17,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:04:17,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:04:17,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:04:17,196 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) [2022-07-22 22:04:17,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:04:17,654 INFO L93 Difference]: Finished difference Result 439 states and 576 transitions. [2022-07-22 22:04:17,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:04:17,655 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 [2022-07-22 22:04:17,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:04:17,656 INFO L225 Difference]: With dead ends: 439 [2022-07-22 22:04:17,656 INFO L226 Difference]: Without dead ends: 237 [2022-07-22 22:04:17,657 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 [2022-07-22 22:04:17,657 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 392 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:04:17,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1409 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 22:04:17,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-07-22 22:04:17,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2022-07-22 22:04:17,665 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) [2022-07-22 22:04:17,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 310 transitions. [2022-07-22 22:04:17,666 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 310 transitions. Word has length 123 [2022-07-22 22:04:17,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:04:17,667 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 310 transitions. [2022-07-22 22:04:17,667 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) [2022-07-22 22:04:17,667 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 310 transitions. [2022-07-22 22:04:17,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-22 22:04:17,668 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:04:17,668 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] [2022-07-22 22:04:17,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 22:04:17,882 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 [2022-07-22 22:04:17,882 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:04:17,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:04:17,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1195830657, now seen corresponding path program 1 times [2022-07-22 22:04:17,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:04:17,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563230097] [2022-07-22 22:04:17,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:17,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:04:17,952 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:04:17,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144044445] [2022-07-22 22:04:17,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:17,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:04:17,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:04:17,954 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) [2022-07-22 22:04:17,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 22:04:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:18,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 2811 conjuncts, 327 conjunts are in the unsatisfiable core [2022-07-22 22:04:18,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:04:18,543 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 [2022-07-22 22:04:18,810 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 [2022-07-22 22:04:18,813 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 [2022-07-22 22:04:19,068 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 [2022-07-22 22:04:19,409 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-22 22:04:19,410 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 [2022-07-22 22:04:19,653 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-22 22:04:19,653 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 [2022-07-22 22:04:30,890 INFO L356 Elim1Store]: treesize reduction 91, result has 30.0 percent of original size [2022-07-22 22:04:30,891 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 [2022-07-22 22:04:30,906 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 [2022-07-22 22:04:31,435 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-07-22 22:04:31,436 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 [2022-07-22 22:04:32,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:04:32,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 22:04:32,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:04:32,441 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 138 [2022-07-22 22:04:32,470 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:04:32,470 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 148 treesize of output 180 [2022-07-22 22:04:32,746 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-22 22:04:32,746 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 51 [2022-07-22 22:04:32,753 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 19 treesize of output 17 [2022-07-22 22:05:36,561 WARN L233 SmtUtils]: Spent 11.43s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:05:42,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:05:45,646 INFO L356 Elim1Store]: treesize reduction 72, result has 28.7 percent of original size [2022-07-22 22:05:45,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 362 treesize of output 468 [2022-07-22 22:05:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 28 proven. 114 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 22:05:46,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:06:01,942 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_13| Int)) (let ((.cse1 (+ |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.offset| 24))) (let ((.cse2 (let ((.cse3 (select |c_#memory_int| |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.base|))) (* (select .cse3 .cse1) (select .cse3 (+ |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.offset| 16)))))) (let ((.cse0 (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_13| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_13|) 0 .cse2)) |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.base|))) (or (not (= (mod (select .cse0 .cse1) 18446744073709551616) 0)) (not (<= (mod .cse2 18446744073709551616) (mod (select .cse0 (+ |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_13| Int)) (let ((.cse4 (let ((.cse5 (select |c_#memory_int| |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.base|))) (* (select .cse5 (+ |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.offset| 24)) (select .cse5 (+ |c_aws_array_list_ensure_capacity_aws_array_list_calc_necessary_size_~list#1.offset| 16)))))) (<= (mod .cse4 18446744073709551616) (mod (select (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_13| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_13|) 0 .cse4)) |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))))) is different from false [2022-07-22 22:06:01,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:06:01,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563230097] [2022-07-22 22:06:01,946 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:06:01,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144044445] [2022-07-22 22:06:01,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144044445] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:06:01,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:06:01,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2022-07-22 22:06:01,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898969774] [2022-07-22 22:06:01,947 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:06:01,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-07-22 22:06:01,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:06:01,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-07-22 22:06:01,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=4428, Unknown=41, NotChecked=134, Total=4830 [2022-07-22 22:06:01,949 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) [2022-07-22 22:06:34,236 WARN L233 SmtUtils]: Spent 14.17s on a formula simplification. DAG size of input: 102 DAG size of output: 72 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:06:49,500 WARN L233 SmtUtils]: Spent 10.24s on a formula simplification. DAG size of input: 96 DAG size of output: 66 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:07:04,848 WARN L233 SmtUtils]: Spent 8.56s on a formula simplification. DAG size of input: 97 DAG size of output: 67 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:07:38,834 WARN L233 SmtUtils]: Spent 31.65s on a formula simplification. DAG size of input: 97 DAG size of output: 86 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:07:46,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:07:46,655 INFO L93 Difference]: Finished difference Result 335 states and 440 transitions. [2022-07-22 22:07:46,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-07-22 22:07:46,656 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 [2022-07-22 22:07:46,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:07:46,658 INFO L225 Difference]: With dead ends: 335 [2022-07-22 22:07:46,658 INFO L226 Difference]: Without dead ends: 333 [2022-07-22 22:07:46,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 90 SyntacticMatches, 5 SemanticMatches, 101 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2823 ImplicationChecksByTransitivity, 174.5s TimeCoverageRelationStatistics Valid=561, Invalid=9685, Unknown=60, NotChecked=200, Total=10506 [2022-07-22 22:07:46,661 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 267 mSDsluCounter, 3307 mSDsCounter, 0 mSdLazyCounter, 3746 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 3572 SdHoareTripleChecker+Invalid, 8394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 3746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4339 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 22:07:46,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 3572 Invalid, 8394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 3746 Invalid, 0 Unknown, 4339 Unchecked, 2.6s Time] [2022-07-22 22:07:46,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-07-22 22:07:46,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 308. [2022-07-22 22:07:46,673 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) [2022-07-22 22:07:46,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 411 transitions. [2022-07-22 22:07:46,675 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 411 transitions. Word has length 153 [2022-07-22 22:07:46,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:07:46,676 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 411 transitions. [2022-07-22 22:07:46,676 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) [2022-07-22 22:07:46,676 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 411 transitions. [2022-07-22 22:07:46,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-22 22:07:46,677 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:07:46,678 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, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:07:46,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 22:07:46,892 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 [2022-07-22 22:07:46,892 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:07:46,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:07:46,892 INFO L85 PathProgramCache]: Analyzing trace with hash 867805371, now seen corresponding path program 1 times [2022-07-22 22:07:46,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:07:46,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433485269] [2022-07-22 22:07:46,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:07:46,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:07:46,971 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:07:46,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [506139141] [2022-07-22 22:07:46,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:07:46,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:07:46,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:07:46,988 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) [2022-07-22 22:07:46,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 22:07:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:07:47,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 2823 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-22 22:07:47,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:07:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 126 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-22 22:07:47,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:07:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 19 proven. 31 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-07-22 22:07:48,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:07:48,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433485269] [2022-07-22 22:07:48,009 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:07:48,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506139141] [2022-07-22 22:07:48,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506139141] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:07:48,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:07:48,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 21 [2022-07-22 22:07:48,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468569169] [2022-07-22 22:07:48,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:07:48,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 22:07:48,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:07:48,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 22:07:48,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:07:48,010 INFO L87 Difference]: Start difference. First operand 308 states and 411 transitions. Second operand has 21 states, 18 states have (on average 5.944444444444445) internal successors, (107), 14 states have internal predecessors, (107), 5 states have call successors, (31), 3 states have call predecessors, (31), 7 states have return successors, (32), 8 states have call predecessors, (32), 4 states have call successors, (32) [2022-07-22 22:07:48,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:07:48,415 INFO L93 Difference]: Finished difference Result 527 states and 718 transitions. [2022-07-22 22:07:48,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 22:07:48,415 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 5.944444444444445) internal successors, (107), 14 states have internal predecessors, (107), 5 states have call successors, (31), 3 states have call predecessors, (31), 7 states have return successors, (32), 8 states have call predecessors, (32), 4 states have call successors, (32) Word has length 171 [2022-07-22 22:07:48,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:07:48,420 INFO L225 Difference]: With dead ends: 527 [2022-07-22 22:07:48,421 INFO L226 Difference]: Without dead ends: 316 [2022-07-22 22:07:48,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 320 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2022-07-22 22:07:48,422 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 19 mSDsluCounter, 4343 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4642 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:07:48,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 4642 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 22:07:48,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-07-22 22:07:48,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2022-07-22 22:07:48,437 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) [2022-07-22 22:07:48,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 432 transitions. [2022-07-22 22:07:48,438 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 432 transitions. Word has length 171 [2022-07-22 22:07:48,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:07:48,439 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 432 transitions. [2022-07-22 22:07:48,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 5.944444444444445) internal successors, (107), 14 states have internal predecessors, (107), 5 states have call successors, (31), 3 states have call predecessors, (31), 7 states have return successors, (32), 8 states have call predecessors, (32), 4 states have call successors, (32) [2022-07-22 22:07:48,439 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 432 transitions. [2022-07-22 22:07:48,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-22 22:07:48,441 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:07:48,441 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, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:07:48,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 22:07:48,662 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 [2022-07-22 22:07:48,662 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:07:48,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:07:48,662 INFO L85 PathProgramCache]: Analyzing trace with hash 180166188, now seen corresponding path program 1 times [2022-07-22 22:07:48,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:07:48,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804445809] [2022-07-22 22:07:48,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:07:48,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:07:48,716 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:07:48,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [935890542] [2022-07-22 22:07:48,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:07:48,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:07:48,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:07:48,718 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) [2022-07-22 22:07:48,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 22:07:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:07:49,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 2858 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-22 22:07:49,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:07:49,171 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 9 [2022-07-22 22:07:49,373 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 98 proven. 8 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-22 22:07:49,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:07:50,084 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 32 proven. 15 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-22 22:07:50,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:07:50,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804445809] [2022-07-22 22:07:50,085 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:07:50,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935890542] [2022-07-22 22:07:50,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935890542] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:07:50,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:07:50,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 26 [2022-07-22 22:07:50,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83661276] [2022-07-22 22:07:50,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:07:50,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-22 22:07:50,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:07:50,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-22 22:07:50,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2022-07-22 22:07:50,086 INFO L87 Difference]: Start difference. First operand 315 states and 432 transitions. Second operand has 26 states, 21 states have (on average 5.428571428571429) internal successors, (114), 19 states have internal predecessors, (114), 7 states have call successors, (32), 3 states have call predecessors, (32), 8 states have return successors, (33), 9 states have call predecessors, (33), 6 states have call successors, (33) [2022-07-22 22:07:50,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:07:50,941 INFO L93 Difference]: Finished difference Result 545 states and 746 transitions. [2022-07-22 22:07:50,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 22:07:50,942 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 5.428571428571429) internal successors, (114), 19 states have internal predecessors, (114), 7 states have call successors, (32), 3 states have call predecessors, (32), 8 states have return successors, (33), 9 states have call predecessors, (33), 6 states have call successors, (33) Word has length 171 [2022-07-22 22:07:50,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:07:50,944 INFO L225 Difference]: With dead ends: 545 [2022-07-22 22:07:50,944 INFO L226 Difference]: Without dead ends: 330 [2022-07-22 22:07:50,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 315 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2022-07-22 22:07:50,948 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 26 mSDsluCounter, 6205 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 6499 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 22:07:50,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 6499 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 22:07:50,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-07-22 22:07:50,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 315. [2022-07-22 22:07:50,960 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) [2022-07-22 22:07:50,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 430 transitions. [2022-07-22 22:07:50,961 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 430 transitions. Word has length 171 [2022-07-22 22:07:50,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:07:50,962 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 430 transitions. [2022-07-22 22:07:50,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 5.428571428571429) internal successors, (114), 19 states have internal predecessors, (114), 7 states have call successors, (32), 3 states have call predecessors, (32), 8 states have return successors, (33), 9 states have call predecessors, (33), 6 states have call successors, (33) [2022-07-22 22:07:50,962 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 430 transitions. [2022-07-22 22:07:50,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-22 22:07:50,963 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:07:50,963 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, 1, 1, 1, 1, 1, 1] [2022-07-22 22:07:50,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-22 22:07:51,176 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 [2022-07-22 22:07:51,176 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:07:51,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:07:51,177 INFO L85 PathProgramCache]: Analyzing trace with hash 264936878, now seen corresponding path program 2 times [2022-07-22 22:07:51,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:07:51,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362374923] [2022-07-22 22:07:51,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:07:51,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:07:51,253 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:07:51,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453821345] [2022-07-22 22:07:51,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:07:51,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:07:51,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:07:51,273 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) [2022-07-22 22:07:51,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 22:07:52,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:07:52,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:07:52,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 2854 conjuncts, 67 conjunts are in the unsatisfiable core [2022-07-22 22:07:52,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:07:52,071 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 [2022-07-22 22:07:52,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:07:52,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-22 22:07:52,243 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-22 22:07:52,244 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 27 [2022-07-22 22:07:52,273 INFO L356 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2022-07-22 22:07:52,274 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2022-07-22 22:07:52,435 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1054 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1054) |c_#memory_$Pointer$.base|)) is different from true [2022-07-22 22:07:52,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:07:52,587 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 81 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-22 22:07:52,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:07:52,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:07:52,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362374923] [2022-07-22 22:07:52,797 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:07:52,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453821345] [2022-07-22 22:07:52,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453821345] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:07:52,797 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:07:52,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-07-22 22:07:52,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409202780] [2022-07-22 22:07:52,798 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:07:52,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 22:07:52,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:07:52,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 22:07:52,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=4, NotChecked=40, Total=506 [2022-07-22 22:07:52,799 INFO L87 Difference]: Start difference. First operand 315 states and 430 transitions. Second operand has 22 states, 20 states have (on average 3.85) internal successors, (77), 18 states have internal predecessors, (77), 8 states have call successors, (23), 7 states have call predecessors, (23), 8 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2022-07-22 22:07:53,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:07:53,907 INFO L93 Difference]: Finished difference Result 564 states and 765 transitions. [2022-07-22 22:07:53,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 22:07:53,908 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.85) internal successors, (77), 18 states have internal predecessors, (77), 8 states have call successors, (23), 7 states have call predecessors, (23), 8 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) Word has length 165 [2022-07-22 22:07:53,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:07:53,909 INFO L225 Difference]: With dead ends: 564 [2022-07-22 22:07:53,910 INFO L226 Difference]: Without dead ends: 336 [2022-07-22 22:07:53,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 253 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=699, Unknown=12, NotChecked=54, Total=870 [2022-07-22 22:07:53,911 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 197 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 3105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1378 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:07:53,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1301 Invalid, 3105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1531 Invalid, 0 Unknown, 1378 Unchecked, 1.0s Time] [2022-07-22 22:07:53,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-07-22 22:07:53,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 318. [2022-07-22 22:07:53,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 197 states have (on average 1.1624365482233503) internal successors, (229), 203 states have internal predecessors, (229), 86 states have call successors, (86), 30 states have call predecessors, (86), 34 states have return successors, (116), 84 states have call predecessors, (116), 83 states have call successors, (116) [2022-07-22 22:07:53,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 431 transitions. [2022-07-22 22:07:53,927 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 431 transitions. Word has length 165 [2022-07-22 22:07:53,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:07:53,928 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 431 transitions. [2022-07-22 22:07:53,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.85) internal successors, (77), 18 states have internal predecessors, (77), 8 states have call successors, (23), 7 states have call predecessors, (23), 8 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2022-07-22 22:07:53,929 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 431 transitions. [2022-07-22 22:07:53,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-22 22:07:53,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:07:53,930 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] [2022-07-22 22:07:53,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-22 22:07:54,143 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 [2022-07-22 22:07:54,144 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:07:54,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:07:54,144 INFO L85 PathProgramCache]: Analyzing trace with hash 939814841, now seen corresponding path program 1 times [2022-07-22 22:07:54,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:07:54,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255080336] [2022-07-22 22:07:54,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:07:54,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:07:54,196 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:07:54,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [874334734] [2022-07-22 22:07:54,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:07:54,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:07:54,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:07:54,197 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) [2022-07-22 22:07:54,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 22:07:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:07:54,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 2811 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 22:07:54,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:07:54,695 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-22 22:07:54,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:07:54,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:07:54,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255080336] [2022-07-22 22:07:54,696 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:07:54,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874334734] [2022-07-22 22:07:54,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874334734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:07:54,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:07:54,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:07:54,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20494261] [2022-07-22 22:07:54,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:07:54,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:07:54,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:07:54,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:07:54,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:07:54,698 INFO L87 Difference]: Start difference. First operand 318 states and 431 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) [2022-07-22 22:07:54,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:07:54,908 INFO L93 Difference]: Finished difference Result 556 states and 812 transitions. [2022-07-22 22:07:54,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:07:54,909 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 [2022-07-22 22:07:54,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:07:54,911 INFO L225 Difference]: With dead ends: 556 [2022-07-22 22:07:54,911 INFO L226 Difference]: Without dead ends: 328 [2022-07-22 22:07:54,912 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 [2022-07-22 22:07:54,912 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, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:07:54,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1151 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:07:54,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-07-22 22:07:54,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 320. [2022-07-22 22:07:54,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 199 states have (on average 1.1608040201005025) internal successors, (231), 205 states have internal predecessors, (231), 86 states have call successors, (86), 30 states have call predecessors, (86), 34 states have return successors, (116), 84 states have call predecessors, (116), 83 states have call successors, (116) [2022-07-22 22:07:54,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 433 transitions. [2022-07-22 22:07:54,931 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 433 transitions. Word has length 155 [2022-07-22 22:07:54,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:07:54,933 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 433 transitions. [2022-07-22 22:07:54,933 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) [2022-07-22 22:07:54,933 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 433 transitions. [2022-07-22 22:07:54,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-22 22:07:54,934 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:07:54,935 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, 1, 1, 1, 1, 1, 1] [2022-07-22 22:07:54,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 22:07:55,172 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 [2022-07-22 22:07:55,172 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:07:55,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:07:55,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1063071274, now seen corresponding path program 1 times [2022-07-22 22:07:55,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:07:55,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981273358] [2022-07-22 22:07:55,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:07:55,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:07:55,232 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:07:55,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50702244] [2022-07-22 22:07:55,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:07:55,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:07:55,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:07:55,252 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) [2022-07-22 22:07:55,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 22:07:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:07:55,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 2855 conjuncts, 102 conjunts are in the unsatisfiable core [2022-07-22 22:07:55,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:07:55,734 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 [2022-07-22 22:07:55,894 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 9 [2022-07-22 22:07:56,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:07:56,139 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-07-22 22:08:00,314 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-22 22:08:00,314 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 45 treesize of output 32 [2022-07-22 22:08:00,380 INFO L356 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-07-22 22:08:00,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2022-07-22 22:08:00,619 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_1379 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1379)))) is different from true [2022-07-22 22:08:06,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:08:06,891 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 27 treesize of output 27 [2022-07-22 22:08:06,899 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-22 22:08:06,900 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 [2022-07-22 22:08:25,328 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 24 treesize of output 12 [2022-07-22 22:08:25,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-07-22 22:08:25,361 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 82 proven. 11 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-22 22:08:25,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:08:25,760 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 40 treesize of output 28 [2022-07-22 22:08:28,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:28,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981273358] [2022-07-22 22:08:28,589 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:08:28,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50702244] [2022-07-22 22:08:28,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50702244] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:08:28,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:08:28,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2022-07-22 22:08:28,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408232129] [2022-07-22 22:08:28,590 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:08:28,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-22 22:08:28,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:28,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-22 22:08:28,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1121, Unknown=21, NotChecked=68, Total=1332 [2022-07-22 22:08:28,591 INFO L87 Difference]: Start difference. First operand 320 states and 433 transitions. Second operand has 31 states, 27 states have (on average 2.962962962962963) internal successors, (80), 22 states have internal predecessors, (80), 9 states have call successors, (22), 8 states have call predecessors, (22), 10 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-07-22 22:08:39,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:39,873 INFO L93 Difference]: Finished difference Result 767 states and 1074 transitions. [2022-07-22 22:08:39,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-07-22 22:08:39,874 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 2.962962962962963) internal successors, (80), 22 states have internal predecessors, (80), 9 states have call successors, (22), 8 states have call predecessors, (22), 10 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) Word has length 161 [2022-07-22 22:08:39,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:39,877 INFO L225 Difference]: With dead ends: 767 [2022-07-22 22:08:39,877 INFO L226 Difference]: Without dead ends: 543 [2022-07-22 22:08:39,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 226 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 41.6s TimeCoverageRelationStatistics Valid=283, Invalid=2864, Unknown=49, NotChecked=110, Total=3306 [2022-07-22 22:08:39,879 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 292 mSDsluCounter, 2042 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 2473 SdHoareTripleChecker+Invalid, 5522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2929 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:39,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 2473 Invalid, 5522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 2332 Invalid, 0 Unknown, 2929 Unchecked, 1.7s Time] [2022-07-22 22:08:39,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-07-22 22:08:39,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 482. [2022-07-22 22:08:39,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 299 states have (on average 1.1705685618729098) internal successors, (350), 311 states have internal predecessors, (350), 128 states have call successors, (128), 47 states have call predecessors, (128), 54 states have return successors, (206), 123 states have call predecessors, (206), 125 states have call successors, (206) [2022-07-22 22:08:39,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 684 transitions. [2022-07-22 22:08:39,901 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 684 transitions. Word has length 161 [2022-07-22 22:08:39,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:39,901 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 684 transitions. [2022-07-22 22:08:39,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 2.962962962962963) internal successors, (80), 22 states have internal predecessors, (80), 9 states have call successors, (22), 8 states have call predecessors, (22), 10 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-07-22 22:08:39,902 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 684 transitions. [2022-07-22 22:08:39,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-22 22:08:39,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:39,903 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] [2022-07-22 22:08:39,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 22:08:40,123 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 [2022-07-22 22:08:40,123 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:40,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:40,124 INFO L85 PathProgramCache]: Analyzing trace with hash -179029957, now seen corresponding path program 1 times [2022-07-22 22:08:40,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:40,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612815229] [2022-07-22 22:08:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:40,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:40,167 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:08:40,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [266642889] [2022-07-22 22:08:40,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:40,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:40,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:40,184 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) [2022-07-22 22:08:40,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 22:08:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:40,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 2816 conjuncts, 111 conjunts are in the unsatisfiable core [2022-07-22 22:08:40,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:40,727 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2022-07-22 22:08:41,040 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 [2022-07-22 22:08:43,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:08:43,383 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 [2022-07-22 22:08:43,388 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 [2022-07-22 22:08:43,583 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_1535 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1535) |c_#memory_$Pointer$.base|))) is different from true [2022-07-22 22:08:44,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:08:44,263 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 39 treesize of output 27 [2022-07-22 22:08:44,271 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-22 22:08:44,272 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