./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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_pop_front_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 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 16:59:39,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 16:59:39,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 16:59:39,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 16:59:39,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 16:59:39,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 16:59:39,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 16:59:39,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 16:59:39,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 16:59:39,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 16:59:39,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 16:59:39,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 16:59:39,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 16:59:39,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 16:59:39,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 16:59:39,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 16:59:39,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 16:59:39,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 16:59:39,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 16:59:39,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 16:59:39,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 16:59:39,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 16:59:39,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 16:59:39,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 16:59:39,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 16:59:39,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 16:59:39,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 16:59:39,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 16:59:39,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 16:59:39,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 16:59:39,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 16:59:39,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 16:59:39,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 16:59:39,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 16:59:39,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 16:59:39,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 16:59:39,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 16:59:39,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 16:59:39,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 16:59:39,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 16:59:39,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 16:59:39,314 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 16:59:39,348 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 16:59:39,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 16:59:39,349 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 16:59:39,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 16:59:39,350 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 16:59:39,350 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 16:59:39,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 16:59:39,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 16:59:39,352 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 16:59:39,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 16:59:39,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 16:59:39,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 16:59:39,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 16:59:39,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 16:59:39,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 16:59:39,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 16:59:39,354 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 16:59:39,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 16:59:39,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 16:59:39,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 16:59:39,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 16:59:39,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:59:39,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 16:59:39,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 16:59:39,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 16:59:39,356 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 16:59:39,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 16:59:39,357 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 16:59:39,357 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 16:59:39,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 16:59:39,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 16:59:39,358 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 [2021-12-14 16:59:39,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 16:59:39,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 16:59:39,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 16:59:39,618 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 16:59:39,619 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 16:59:39,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2021-12-14 16:59:39,676 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3989a085/59cf3d4156a9417cbc61d3f29d307250/FLAGa832bd8d1 [2021-12-14 16:59:40,344 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 16:59:40,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2021-12-14 16:59:40,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3989a085/59cf3d4156a9417cbc61d3f29d307250/FLAGa832bd8d1 [2021-12-14 16:59:40,497 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3989a085/59cf3d4156a9417cbc61d3f29d307250 [2021-12-14 16:59:40,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 16:59:40,501 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 16:59:40,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 16:59:40,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 16:59:40,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 16:59:40,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:59:40" (1/1) ... [2021-12-14 16:59:40,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1af4ddfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:40, skipping insertion in model container [2021-12-14 16:59:40,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:59:40" (1/1) ... [2021-12-14 16:59:40,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 16:59:40,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 16:59:40,833 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_pop_front_harness.i[4498,4511] [2021-12-14 16:59:40,841 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_pop_front_harness.i[4558,4571] [2021-12-14 16:59:41,511 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 16:59:41,580 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:41,593 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:41,595 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:41,597 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:41,601 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:41,609 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:41,610 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:41,611 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:41,611 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:41,613 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:41,613 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:41,614 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:41,614 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:41,854 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 16:59:41,864 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 16:59:41,866 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 16:59:41,866 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 16:59:41,867 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 16:59:41,868 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 16:59:41,868 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 16:59:41,869 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 16:59:41,869 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 16:59:41,870 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 16:59:41,985 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:41,990 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:42,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:59:42,102 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 16:59:42,114 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_pop_front_harness.i[4498,4511] [2021-12-14 16:59:42,114 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_pop_front_harness.i[4558,4571] [2021-12-14 16:59:42,138 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 16:59:42,149 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:42,150 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:42,150 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:42,151 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:42,151 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:42,157 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:42,157 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:42,158 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:42,158 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:42,159 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:42,159 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:42,160 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:42,160 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:42,192 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 16:59:42,196 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 16:59:42,198 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 16:59:42,199 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 16:59:42,201 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 16:59:42,201 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 16:59:42,202 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 16:59:42,202 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 16:59:42,204 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 16:59:42,205 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 16:59:42,253 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:42,262 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:42,299 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:59:42,501 INFO L208 MainTranslator]: Completed translation [2021-12-14 16:59:42,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:42 WrapperNode [2021-12-14 16:59:42,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 16:59:42,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 16:59:42,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 16:59:42,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 16:59:42,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:42" (1/1) ... [2021-12-14 16:59:42,607 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:42" (1/1) ... [2021-12-14 16:59:42,682 INFO L137 Inliner]: procedures = 691, calls = 1684, calls flagged for inlining = 51, calls inlined = 10, statements flattened = 684 [2021-12-14 16:59:42,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 16:59:42,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 16:59:42,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 16:59:42,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 16:59:42,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:42" (1/1) ... [2021-12-14 16:59:42,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:42" (1/1) ... [2021-12-14 16:59:42,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:42" (1/1) ... [2021-12-14 16:59:42,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:42" (1/1) ... [2021-12-14 16:59:42,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:42" (1/1) ... [2021-12-14 16:59:42,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:42" (1/1) ... [2021-12-14 16:59:42,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:42" (1/1) ... [2021-12-14 16:59:42,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 16:59:42,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 16:59:42,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 16:59:42,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 16:59:42,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:42" (1/1) ... [2021-12-14 16:59:42,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:59:42,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:59:42,786 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 16:59:42,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 16:59:42,857 INFO L130 BoogieDeclarations]: Found specification of procedure memmove_impl [2021-12-14 16:59:42,857 INFO L138 BoogieDeclarations]: Found implementation of procedure memmove_impl [2021-12-14 16:59:42,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 16:59:42,858 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-14 16:59:42,859 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-14 16:59:42,859 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-14 16:59:42,859 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-14 16:59:42,859 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-14 16:59:42,860 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-14 16:59:42,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 16:59:42,860 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-14 16:59:42,860 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-14 16:59:42,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 16:59:42,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 16:59:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 16:59:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 16:59:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 16:59:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 16:59:42,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 16:59:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-14 16:59:42,862 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-14 16:59:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-14 16:59:42,863 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-14 16:59:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-14 16:59:42,863 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-14 16:59:42,884 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-14 16:59:42,885 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-14 16:59:42,885 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 16:59:42,885 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 16:59:42,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 16:59:42,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 16:59:42,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 16:59:42,886 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-14 16:59:42,886 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-14 16:59:42,886 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-14 16:59:42,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-14 16:59:42,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 16:59:42,887 INFO L130 BoogieDeclarations]: Found specification of procedure my_memmove [2021-12-14 16:59:42,887 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memmove [2021-12-14 16:59:42,887 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_front [2021-12-14 16:59:42,888 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_front [2021-12-14 16:59:42,888 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-14 16:59:42,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-14 16:59:42,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 16:59:43,185 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 16:59:43,187 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 16:59:43,953 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 16:59:43,965 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 16:59:43,965 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 16:59:43,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:59:43 BoogieIcfgContainer [2021-12-14 16:59:43,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 16:59:43,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 16:59:43,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 16:59:43,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 16:59:43,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:59:40" (1/3) ... [2021-12-14 16:59:43,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f4ae05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:59:43, skipping insertion in model container [2021-12-14 16:59:43,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:42" (2/3) ... [2021-12-14 16:59:43,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f4ae05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:59:43, skipping insertion in model container [2021-12-14 16:59:43,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:59:43" (3/3) ... [2021-12-14 16:59:43,975 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_front_harness.i [2021-12-14 16:59:43,982 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 16:59:43,982 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 16:59:44,038 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 16:59:44,049 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 16:59:44,050 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 16:59:44,074 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 110 states have (on average 1.2) internal successors, (132), 111 states have internal predecessors, (132), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2021-12-14 16:59:44,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-14 16:59:44,085 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:59:44,086 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-14 16:59:44,087 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:59:44,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:59:44,093 INFO L85 PathProgramCache]: Analyzing trace with hash 928387541, now seen corresponding path program 1 times [2021-12-14 16:59:44,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:59:44,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591108277] [2021-12-14 16:59:44,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:59:44,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:59:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:44,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 16:59:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:44,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 16:59:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:44,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:59:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:44,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 16:59:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:44,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 16:59:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:44,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 16:59:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:44,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 16:59:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:44,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 16:59:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:44,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-14 16:59:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:44,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 16:59:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:44,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 16:59:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:44,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 16:59:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:44,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 16:59:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:44,780 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-14 16:59:44,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:59:44,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591108277] [2021-12-14 16:59:44,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591108277] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:59:44,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:59:44,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 16:59:44,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317813690] [2021-12-14 16:59:44,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:59:44,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 16:59:44,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:59:44,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 16:59:44,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-14 16:59:44,823 INFO L87 Difference]: Start difference. First operand has 185 states, 110 states have (on average 1.2) internal successors, (132), 111 states have internal predecessors, (132), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 16:59:45,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:59:45,559 INFO L93 Difference]: Finished difference Result 413 states and 633 transitions. [2021-12-14 16:59:45,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 16:59:45,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 84 [2021-12-14 16:59:45,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:59:45,571 INFO L225 Difference]: With dead ends: 413 [2021-12-14 16:59:45,572 INFO L226 Difference]: Without dead ends: 230 [2021-12-14 16:59:45,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-14 16:59:45,581 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 70 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 16:59:45,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 352 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 16:59:45,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-12-14 16:59:45,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 180. [2021-12-14 16:59:45,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 106 states have (on average 1.1886792452830188) internal successors, (126), 107 states have internal predecessors, (126), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2021-12-14 16:59:45,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 239 transitions. [2021-12-14 16:59:45,654 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 239 transitions. Word has length 84 [2021-12-14 16:59:45,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:59:45,655 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 239 transitions. [2021-12-14 16:59:45,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 16:59:45,658 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 239 transitions. [2021-12-14 16:59:45,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-14 16:59:45,662 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:59:45,662 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-14 16:59:45,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 16:59:45,665 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:59:45,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:59:45,665 INFO L85 PathProgramCache]: Analyzing trace with hash -734960815, now seen corresponding path program 1 times [2021-12-14 16:59:45,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:59:45,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969709807] [2021-12-14 16:59:45,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:59:45,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:59:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:45,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 16:59:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:45,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 16:59:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:45,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:59:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:45,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 16:59:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:45,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 16:59:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:45,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 16:59:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:45,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 16:59:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:45,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 16:59:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:45,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-14 16:59:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:45,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 16:59:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:45,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 16:59:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:45,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 16:59:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:45,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 16:59:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:45,984 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-14 16:59:45,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:59:45,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969709807] [2021-12-14 16:59:45,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969709807] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 16:59:45,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552512262] [2021-12-14 16:59:45,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:59:45,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:59:45,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:59:45,991 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 16:59:46,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 16:59:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:46,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 16:59:46,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:59:46,608 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-14 16:59:46,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 16:59:46,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552512262] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:59:46,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 16:59:46,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-14 16:59:46,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073976124] [2021-12-14 16:59:46,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:59:46,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 16:59:46,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:59:46,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 16:59:46,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-14 16:59:46,612 INFO L87 Difference]: Start difference. First operand 180 states and 239 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-14 16:59:46,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:59:46,881 INFO L93 Difference]: Finished difference Result 325 states and 446 transitions. [2021-12-14 16:59:46,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 16:59:46,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 84 [2021-12-14 16:59:46,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:59:46,887 INFO L225 Difference]: With dead ends: 325 [2021-12-14 16:59:46,888 INFO L226 Difference]: Without dead ends: 182 [2021-12-14 16:59:46,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-14 16:59:46,890 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 245 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 16:59:46,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 717 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 16:59:46,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-12-14 16:59:46,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-12-14 16:59:46,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 109 states have internal predecessors, (127), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (66), 56 states have call predecessors, (66), 56 states have call successors, (66) [2021-12-14 16:59:46,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 250 transitions. [2021-12-14 16:59:46,935 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 250 transitions. Word has length 84 [2021-12-14 16:59:46,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:59:46,935 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 250 transitions. [2021-12-14 16:59:46,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-14 16:59:46,936 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 250 transitions. [2021-12-14 16:59:46,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-14 16:59:46,944 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:59:46,944 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-14 16:59:46,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 16:59:47,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:59:47,161 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:59:47,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:59:47,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1141222523, now seen corresponding path program 1 times [2021-12-14 16:59:47,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:59:47,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296475040] [2021-12-14 16:59:47,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:59:47,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:59:47,211 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 16:59:47,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [267146087] [2021-12-14 16:59:47,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:59:47,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:59:47,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:59:47,213 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 16:59:47,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 16:59:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:47,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 2272 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 16:59:47,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:59:47,890 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-14 16:59:47,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 16:59:47,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:59:47,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296475040] [2021-12-14 16:59:47,895 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 16:59:47,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267146087] [2021-12-14 16:59:47,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267146087] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:59:47,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:59:47,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 16:59:47,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248219915] [2021-12-14 16:59:47,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:59:47,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 16:59:47,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:59:47,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 16:59:47,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 16:59:47,898 INFO L87 Difference]: Start difference. First operand 182 states and 250 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-14 16:59:48,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:59:48,308 INFO L93 Difference]: Finished difference Result 317 states and 440 transitions. [2021-12-14 16:59:48,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 16:59:48,309 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 99 [2021-12-14 16:59:48,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:59:48,311 INFO L225 Difference]: With dead ends: 317 [2021-12-14 16:59:48,311 INFO L226 Difference]: Without dead ends: 182 [2021-12-14 16:59:48,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-14 16:59:48,313 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 265 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 16:59:48,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 968 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 16:59:48,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-12-14 16:59:48,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-12-14 16:59:48,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 109 states have internal predecessors, (127), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2021-12-14 16:59:48,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 247 transitions. [2021-12-14 16:59:48,328 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 247 transitions. Word has length 99 [2021-12-14 16:59:48,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:59:48,328 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 247 transitions. [2021-12-14 16:59:48,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-14 16:59:48,329 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 247 transitions. [2021-12-14 16:59:48,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-14 16:59:48,330 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:59:48,330 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-14 16:59:48,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 16:59:48,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-14 16:59:48,556 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:59:48,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:59:48,556 INFO L85 PathProgramCache]: Analyzing trace with hash 232916013, now seen corresponding path program 2 times [2021-12-14 16:59:48,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:59:48,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377763663] [2021-12-14 16:59:48,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:59:48,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:59:48,605 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 16:59:48,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1745497737] [2021-12-14 16:59:48,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 16:59:48,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:59:48,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:59:48,607 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 16:59:48,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 16:59:49,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 16:59:49,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 16:59:49,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-14 16:59:49,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:59:49,457 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-14 16:59:49,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 16:59:49,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:59:49,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377763663] [2021-12-14 16:59:49,458 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 16:59:49,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745497737] [2021-12-14 16:59:49,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745497737] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:59:49,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:59:49,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-14 16:59:49,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782305139] [2021-12-14 16:59:49,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:59:49,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 16:59:49,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:59:49,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 16:59:49,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-14 16:59:49,461 INFO L87 Difference]: Start difference. First operand 182 states and 247 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-14 16:59:49,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:59:49,942 INFO L93 Difference]: Finished difference Result 326 states and 450 transitions. [2021-12-14 16:59:49,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 16:59:49,942 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 114 [2021-12-14 16:59:49,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:59:49,944 INFO L225 Difference]: With dead ends: 326 [2021-12-14 16:59:49,944 INFO L226 Difference]: Without dead ends: 194 [2021-12-14 16:59:49,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-12-14 16:59:49,946 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 283 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 16:59:49,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 1297 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 16:59:49,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-12-14 16:59:49,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2021-12-14 16:59:49,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 113 states have (on average 1.1858407079646018) internal successors, (134), 115 states have internal predecessors, (134), 62 states have call successors, (62), 17 states have call predecessors, (62), 18 states have return successors, (68), 61 states have call predecessors, (68), 61 states have call successors, (68) [2021-12-14 16:59:49,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 264 transitions. [2021-12-14 16:59:49,962 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 264 transitions. Word has length 114 [2021-12-14 16:59:49,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:59:49,964 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 264 transitions. [2021-12-14 16:59:49,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-14 16:59:49,964 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 264 transitions. [2021-12-14 16:59:49,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-14 16:59:49,966 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:59:49,967 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-14 16:59:50,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 16:59:50,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:59:50,192 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:59:50,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:59:50,192 INFO L85 PathProgramCache]: Analyzing trace with hash -159680425, now seen corresponding path program 1 times [2021-12-14 16:59:50,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:59:50,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302928241] [2021-12-14 16:59:50,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:59:50,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:59:50,274 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 16:59:50,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1633538672] [2021-12-14 16:59:50,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:59:50,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:59:50,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:59:50,280 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 16:59:50,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 16:59:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:50,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 323 conjunts are in the unsatisfiable core [2021-12-14 16:59:50,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:59:51,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-14 16:59:51,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 16:59:51,512 INFO L354 Elim1Store]: treesize reduction 44, result has 47.0 percent of original size [2021-12-14 16:59:51,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 48 [2021-12-14 17:00:12,271 INFO L354 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2021-12-14 17:00:12,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 53 [2021-12-14 17:00:17,804 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-12-14 17:00:17,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2021-12-14 17:00:22,348 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_344 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_344)))) is different from true [2021-12-14 17:00:36,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:00:36,642 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-14 17:00:36,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 68 [2021-12-14 17:00:36,673 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-14 17:00:36,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18