./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_get_at_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 4074842a6d6900f214884b5b0ef94aa1b36f37c81b70cefd0198f88d1e717beb --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:13:19,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:13:19,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:13:19,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:13:19,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:13:19,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:13:19,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:13:19,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:13:19,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:13:19,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:13:19,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:13:19,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:13:19,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:13:19,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:13:19,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:13:19,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:13:19,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:13:19,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:13:19,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:13:19,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:13:19,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:13:19,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:13:19,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:13:19,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:13:19,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:13:19,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:13:19,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:13:19,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:13:19,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:13:19,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:13:19,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:13:19,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:13:19,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:13:19,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:13:19,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:13:19,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:13:19,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:13:19,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:13:19,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:13:19,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:13:19,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:13:19,599 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:13:19,617 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:13:19,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:13:19,617 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:13:19,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:13:19,618 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:13:19,618 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:13:19,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:13:19,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:13:19,620 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:13:19,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:13:19,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:13:19,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:13:19,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:13:19,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:13:19,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:13:19,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:13:19,621 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:13:19,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:13:19,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:13:19,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:13:19,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:13:19,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:13:19,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:13:19,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:13:19,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:13:19,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:13:19,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:13:19,623 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:13:19,624 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:13:19,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:13:19,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:13:19,624 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4074842a6d6900f214884b5b0ef94aa1b36f37c81b70cefd0198f88d1e717beb [2021-12-16 03:13:19,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:13:19,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:13:19,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:13:19,891 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:13:19,892 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:13:19,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i [2021-12-16 03:13:19,950 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28308cff7/fc8b21d9e394440bbf7f007888b9df32/FLAG604873976 [2021-12-16 03:13:20,570 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:13:20,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i [2021-12-16 03:13:20,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28308cff7/fc8b21d9e394440bbf7f007888b9df32/FLAG604873976 [2021-12-16 03:13:20,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28308cff7/fc8b21d9e394440bbf7f007888b9df32 [2021-12-16 03:13:20,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:13:20,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:13:20,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:13:20,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:13:20,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:13:20,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:13:20" (1/1) ... [2021-12-16 03:13:20,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@224debc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:20, skipping insertion in model container [2021-12-16 03:13:20,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:13:20" (1/1) ... [2021-12-16 03:13:20,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:13:21,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:13:21,259 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_get_at_harness.i[4495,4508] [2021-12-16 03:13:21,266 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_get_at_harness.i[4555,4568] [2021-12-16 03:13:21,815 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:13:21,869 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:21,870 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:21,870 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:21,871 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:21,880 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:21,892 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:21,893 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:21,894 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:21,895 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:21,896 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:21,897 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:21,897 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:21,898 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:22,175 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:13:22,176 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:13:22,177 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:13:22,179 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:13:22,180 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:13:22,181 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:13:22,181 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:13:22,183 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:13:22,184 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:13:22,185 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:13:22,316 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:22,320 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:22,381 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:22,382 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:22,385 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:13:22,425 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:13:22,442 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_get_at_harness.i[4495,4508] [2021-12-16 03:13:22,443 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_get_at_harness.i[4555,4568] [2021-12-16 03:13:22,465 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:13:22,476 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:22,480 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:22,480 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:22,481 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:22,481 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:22,487 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:22,488 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:22,492 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:22,493 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:22,494 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:22,495 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:22,495 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:22,496 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:22,535 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:13:22,536 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:13:22,537 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:13:22,537 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:13:22,539 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:13:22,539 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:13:22,540 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:13:22,540 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:13:22,541 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:13:22,541 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:13:22,584 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:22,589 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:22,611 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:22,612 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:13:22,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:13:22,809 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:13:22,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:22 WrapperNode [2021-12-16 03:13:22,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:13:22,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:13:22,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:13:22,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:13:22,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:22" (1/1) ... [2021-12-16 03:13:22,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:22" (1/1) ... [2021-12-16 03:13:23,003 INFO L137 Inliner]: procedures = 691, calls = 1682, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 655 [2021-12-16 03:13:23,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:13:23,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:13:23,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:13:23,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:13:23,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:22" (1/1) ... [2021-12-16 03:13:23,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:22" (1/1) ... [2021-12-16 03:13:23,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:22" (1/1) ... [2021-12-16 03:13:23,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:22" (1/1) ... [2021-12-16 03:13:23,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:22" (1/1) ... [2021-12-16 03:13:23,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:22" (1/1) ... [2021-12-16 03:13:23,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:22" (1/1) ... [2021-12-16 03:13:23,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:13:23,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:13:23,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:13:23,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:13:23,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:22" (1/1) ... [2021-12-16 03:13:23,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:13:23,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:13:23,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 03:13:23,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 03:13:23,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:13:23,224 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-16 03:13:23,224 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-16 03:13:23,224 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-16 03:13:23,224 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-16 03:13:23,224 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-16 03:13:23,224 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-16 03:13:23,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:13:23,224 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-16 03:13:23,225 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-16 03:13:23,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 03:13:23,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 03:13:23,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:13:23,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:13:23,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 03:13:23,226 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-16 03:13:23,226 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-16 03:13:23,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:13:23,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:13:23,226 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-16 03:13:23,227 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-16 03:13:23,227 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-16 03:13:23,227 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-16 03:13:23,227 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-16 03:13:23,227 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-16 03:13:23,227 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-16 03:13:23,228 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-16 03:13:23,228 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-16 03:13:23,228 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-16 03:13:23,228 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 03:13:23,228 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 03:13:23,228 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-16 03:13:23,229 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-16 03:13:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:13:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:13:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:13:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-16 03:13:23,229 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-16 03:13:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-16 03:13:23,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-16 03:13:23,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:13:23,231 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-16 03:13:23,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-16 03:13:23,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:13:23,559 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:13:23,560 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:13:24,141 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:13:24,151 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:13:24,152 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 03:13:24,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:13:24 BoogieIcfgContainer [2021-12-16 03:13:24,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:13:24,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:13:24,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:13:24,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:13:24,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:13:20" (1/3) ... [2021-12-16 03:13:24,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41216445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:13:24, skipping insertion in model container [2021-12-16 03:13:24,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:13:22" (2/3) ... [2021-12-16 03:13:24,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41216445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:13:24, skipping insertion in model container [2021-12-16 03:13:24,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:13:24" (3/3) ... [2021-12-16 03:13:24,163 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_get_at_harness.i [2021-12-16 03:13:24,169 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:13:24,171 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:13:24,228 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:13:24,245 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 03:13:24,247 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:13:24,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 108 states have (on average 1.212962962962963) internal successors, (131), 109 states have internal predecessors, (131), 52 states have call successors, (52), 16 states have call predecessors, (52), 16 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-16 03:13:24,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 03:13:24,293 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:13:24,294 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:13:24,295 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:13:24,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:13:24,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1881445885, now seen corresponding path program 1 times [2021-12-16 03:13:24,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:13:24,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035540367] [2021-12-16 03:13:24,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:24,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:13:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:24,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:13:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:24,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:13:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:24,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:13:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:24,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:13:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:24,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:13:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:24,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-16 03:13:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:24,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 03:13:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:24,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 03:13:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:24,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 03:13:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:24,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:13:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:25,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 03:13:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:25,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-16 03:13:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:25,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-16 03:13:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:25,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 03:13:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:25,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 03:13:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:25,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 03:13:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:25,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 03:13:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:25,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 03:13:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:25,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 03:13:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:25,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 03:13:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:25,159 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-12-16 03:13:25,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:13:25,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035540367] [2021-12-16 03:13:25,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035540367] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:13:25,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:13:25,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:13:25,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822474794] [2021-12-16 03:13:25,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:13:25,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:13:25,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:13:25,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:13:25,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:13:25,200 INFO L87 Difference]: Start difference. First operand has 178 states, 108 states have (on average 1.212962962962963) internal successors, (131), 109 states have internal predecessors, (131), 52 states have call successors, (52), 16 states have call predecessors, (52), 16 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-16 03:13:25,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:13:25,641 INFO L93 Difference]: Finished difference Result 370 states and 533 transitions. [2021-12-16 03:13:25,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:13:25,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 124 [2021-12-16 03:13:25,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:13:25,657 INFO L225 Difference]: With dead ends: 370 [2021-12-16 03:13:25,657 INFO L226 Difference]: Without dead ends: 190 [2021-12-16 03:13:25,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:13:25,665 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 114 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 03:13:25,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 279 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 03:13:25,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-12-16 03:13:25,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 169. [2021-12-16 03:13:25,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 102 states have internal predecessors, (118), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-12-16 03:13:25,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 220 transitions. [2021-12-16 03:13:25,722 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 220 transitions. Word has length 124 [2021-12-16 03:13:25,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:13:25,722 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 220 transitions. [2021-12-16 03:13:25,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-16 03:13:25,722 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 220 transitions. [2021-12-16 03:13:25,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 03:13:25,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:13:25,727 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:13:25,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:13:25,727 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:13:25,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:13:25,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1730209477, now seen corresponding path program 1 times [2021-12-16 03:13:25,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:13:25,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009705230] [2021-12-16 03:13:25,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:25,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:13:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:25,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:13:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:25,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:13:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:25,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:13:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:25,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:13:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:25,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:13:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:25,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-16 03:13:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:26,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 03:13:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:26,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 03:13:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:26,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 03:13:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:26,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:13:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:26,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 03:13:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:26,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-16 03:13:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:26,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-16 03:13:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:26,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 03:13:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:26,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 03:13:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:26,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 03:13:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:26,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 03:13:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:26,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 03:13:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:26,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 03:13:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:26,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 03:13:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:26,142 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-12-16 03:13:26,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:13:26,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009705230] [2021-12-16 03:13:26,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009705230] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:13:26,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846015616] [2021-12-16 03:13:26,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:26,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:26,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:13:26,147 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:13:26,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 03:13:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:26,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 2243 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 03:13:26,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:13:26,894 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-16 03:13:26,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:13:26,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846015616] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:13:26,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:13:26,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-12-16 03:13:26,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205074682] [2021-12-16 03:13:26,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:13:26,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:13:26,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:13:26,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:13:26,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:13:26,899 INFO L87 Difference]: Start difference. First operand 169 states and 220 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-16 03:13:27,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:13:27,169 INFO L93 Difference]: Finished difference Result 311 states and 411 transitions. [2021-12-16 03:13:27,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:13:27,169 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 124 [2021-12-16 03:13:27,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:13:27,172 INFO L225 Difference]: With dead ends: 311 [2021-12-16 03:13:27,172 INFO L226 Difference]: Without dead ends: 171 [2021-12-16 03:13:27,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-12-16 03:13:27,174 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 229 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:13:27,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 627 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 03:13:27,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-12-16 03:13:27,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2021-12-16 03:13:27,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 104 states have internal predecessors, (119), 52 states have call successors, (52), 16 states have call predecessors, (52), 16 states have return successors, (55), 50 states have call predecessors, (55), 50 states have call successors, (55) [2021-12-16 03:13:27,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 226 transitions. [2021-12-16 03:13:27,191 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 226 transitions. Word has length 124 [2021-12-16 03:13:27,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:13:27,191 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 226 transitions. [2021-12-16 03:13:27,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-16 03:13:27,192 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 226 transitions. [2021-12-16 03:13:27,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-16 03:13:27,194 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:13:27,194 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:13:27,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 03:13:27,418 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 [2021-12-16 03:13:27,418 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:13:27,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:13:27,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1300515237, now seen corresponding path program 1 times [2021-12-16 03:13:27,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:13:27,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002582243] [2021-12-16 03:13:27,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:27,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:13:27,481 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:13:27,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1249764681] [2021-12-16 03:13:27,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:27,481 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:27,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:13:27,483 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:13:27,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 03:13:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:27,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 2525 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 03:13:27,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:13:28,212 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-12-16 03:13:28,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:13:28,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:13:28,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002582243] [2021-12-16 03:13:28,213 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:13:28,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249764681] [2021-12-16 03:13:28,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249764681] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:13:28,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:13:28,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 03:13:28,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124332788] [2021-12-16 03:13:28,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:13:28,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:13:28,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:13:28,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:13:28,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:13:28,215 INFO L87 Difference]: Start difference. First operand 171 states and 226 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-16 03:13:28,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:13:28,535 INFO L93 Difference]: Finished difference Result 279 states and 368 transitions. [2021-12-16 03:13:28,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:13:28,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 154 [2021-12-16 03:13:28,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:13:28,545 INFO L225 Difference]: With dead ends: 279 [2021-12-16 03:13:28,546 INFO L226 Difference]: Without dead ends: 171 [2021-12-16 03:13:28,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:13:28,549 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 245 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 03:13:28,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 771 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 03:13:28,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-12-16 03:13:28,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2021-12-16 03:13:28,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 104 states have internal predecessors, (119), 52 states have call successors, (52), 16 states have call predecessors, (52), 16 states have return successors, (52), 50 states have call predecessors, (52), 50 states have call successors, (52) [2021-12-16 03:13:28,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 223 transitions. [2021-12-16 03:13:28,576 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 223 transitions. Word has length 154 [2021-12-16 03:13:28,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:13:28,577 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 223 transitions. [2021-12-16 03:13:28,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-16 03:13:28,577 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 223 transitions. [2021-12-16 03:13:28,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-16 03:13:28,583 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:13:28,583 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:13:28,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 03:13:28,803 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 [2021-12-16 03:13:28,804 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:13:28,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:13:28,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1091978033, now seen corresponding path program 2 times [2021-12-16 03:13:28,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:13:28,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105102730] [2021-12-16 03:13:28,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:28,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:13:28,870 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:13:28,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [567053907] [2021-12-16 03:13:28,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:13:28,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:28,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:13:28,872 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:13:28,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 03:13:29,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:13:29,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:13:29,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 2666 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 03:13:29,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:13:29,924 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-12-16 03:13:29,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:13:29,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:13:29,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105102730] [2021-12-16 03:13:29,925 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:13:29,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567053907] [2021-12-16 03:13:29,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567053907] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:13:29,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:13:29,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 03:13:29,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415173253] [2021-12-16 03:13:29,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:13:29,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 03:13:29,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:13:29,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 03:13:29,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:13:29,928 INFO L87 Difference]: Start difference. First operand 171 states and 223 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 5 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-16 03:13:30,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:13:30,269 INFO L93 Difference]: Finished difference Result 268 states and 345 transitions. [2021-12-16 03:13:30,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 03:13:30,270 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 5 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) Word has length 169 [2021-12-16 03:13:30,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:13:30,272 INFO L225 Difference]: With dead ends: 268 [2021-12-16 03:13:30,272 INFO L226 Difference]: Without dead ends: 169 [2021-12-16 03:13:30,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-12-16 03:13:30,273 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 246 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 03:13:30,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 1056 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 03:13:30,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-16 03:13:30,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-12-16 03:13:30,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 101 states have (on average 1.1584158415841583) internal successors, (117), 102 states have internal predecessors, (117), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-12-16 03:13:30,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 219 transitions. [2021-12-16 03:13:30,313 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 219 transitions. Word has length 169 [2021-12-16 03:13:30,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:13:30,314 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 219 transitions. [2021-12-16 03:13:30,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 5 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-16 03:13:30,314 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 219 transitions. [2021-12-16 03:13:30,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-12-16 03:13:30,316 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:13:30,317 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:13:30,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 03:13:30,521 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 [2021-12-16 03:13:30,521 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:13:30,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:13:30,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1928427287, now seen corresponding path program 1 times [2021-12-16 03:13:30,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:13:30,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820126835] [2021-12-16 03:13:30,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:30,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:13:30,585 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:13:30,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772444079] [2021-12-16 03:13:30,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:30,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:30,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:13:30,588 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:13:30,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 03:13:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:31,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 2948 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-16 03:13:31,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:13:31,572 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-12-16 03:13:31,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:13:31,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:13:31,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820126835] [2021-12-16 03:13:31,573 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:13:31,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772444079] [2021-12-16 03:13:31,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772444079] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:13:31,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:13:31,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 03:13:31,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980609458] [2021-12-16 03:13:31,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:13:31,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:13:31,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:13:31,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:13:31,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:13:31,576 INFO L87 Difference]: Start difference. First operand 169 states and 219 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) [2021-12-16 03:13:31,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:13:31,689 INFO L93 Difference]: Finished difference Result 329 states and 436 transitions. [2021-12-16 03:13:31,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 03:13:31,690 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) Word has length 199 [2021-12-16 03:13:31,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:13:31,693 INFO L225 Difference]: With dead ends: 329 [2021-12-16 03:13:31,693 INFO L226 Difference]: Without dead ends: 226 [2021-12-16 03:13:31,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:13:31,695 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 50 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:13:31,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 1664 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:13:31,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-12-16 03:13:31,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 188. [2021-12-16 03:13:31,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 113 states have (on average 1.1592920353982301) internal successors, (131), 114 states have internal predecessors, (131), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (57), 57 states have call predecessors, (57), 56 states have call successors, (57) [2021-12-16 03:13:31,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 246 transitions. [2021-12-16 03:13:31,720 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 246 transitions. Word has length 199 [2021-12-16 03:13:31,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:13:31,722 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 246 transitions. [2021-12-16 03:13:31,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) [2021-12-16 03:13:31,722 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 246 transitions. [2021-12-16 03:13:31,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-12-16 03:13:31,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:13:31,726 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:13:31,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 03:13:31,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:31,940 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:13:31,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:13:31,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1634572583, now seen corresponding path program 1 times [2021-12-16 03:13:31,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:13:31,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294689232] [2021-12-16 03:13:31,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:31,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:13:32,003 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:13:32,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1286061943] [2021-12-16 03:13:32,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:32,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:32,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:13:32,005 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:13:32,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 03:13:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:32,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 2945 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 03:13:32,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:13:32,931 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-12-16 03:13:32,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:13:32,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:13:32,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294689232] [2021-12-16 03:13:32,932 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:13:32,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286061943] [2021-12-16 03:13:32,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286061943] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:13:32,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:13:32,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:13:32,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293934128] [2021-12-16 03:13:32,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:13:32,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:13:32,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:13:32,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:13:32,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:13:32,933 INFO L87 Difference]: Start difference. First operand 188 states and 246 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 4 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-12-16 03:13:33,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:13:33,062 INFO L93 Difference]: Finished difference Result 339 states and 451 transitions. [2021-12-16 03:13:33,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:13:33,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 4 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 199 [2021-12-16 03:13:33,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:13:33,064 INFO L225 Difference]: With dead ends: 339 [2021-12-16 03:13:33,064 INFO L226 Difference]: Without dead ends: 230 [2021-12-16 03:13:33,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:13:33,065 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 43 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:13:33,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 1210 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:13:33,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-12-16 03:13:33,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 194. [2021-12-16 03:13:33,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 116 states have (on average 1.146551724137931) internal successors, (133), 117 states have internal predecessors, (133), 61 states have call successors, (61), 16 states have call predecessors, (61), 16 states have return successors, (60), 60 states have call predecessors, (60), 59 states have call successors, (60) [2021-12-16 03:13:33,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 254 transitions. [2021-12-16 03:13:33,097 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 254 transitions. Word has length 199 [2021-12-16 03:13:33,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:13:33,097 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 254 transitions. [2021-12-16 03:13:33,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 4 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-12-16 03:13:33,097 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 254 transitions. [2021-12-16 03:13:33,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-12-16 03:13:33,099 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:13:33,099 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:13:33,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-16 03:13:33,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:33,316 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:13:33,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:13:33,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1629353815, now seen corresponding path program 1 times [2021-12-16 03:13:33,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:13:33,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349454019] [2021-12-16 03:13:33,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:33,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:13:33,385 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:13:33,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1679675848] [2021-12-16 03:13:33,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:33,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:33,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:13:33,388 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) [2021-12-16 03:13:33,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 03:13:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:33,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 2942 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-16 03:13:33,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:13:34,199 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-16 03:13:34,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:13:34,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:13:34,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349454019] [2021-12-16 03:13:34,200 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:13:34,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679675848] [2021-12-16 03:13:34,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679675848] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:13:34,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:13:34,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:13:34,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511196571] [2021-12-16 03:13:34,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:13:34,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:13:34,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:13:34,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:13:34,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:13:34,201 INFO L87 Difference]: Start difference. First operand 194 states and 254 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-16 03:13:34,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:13:34,297 INFO L93 Difference]: Finished difference Result 297 states and 385 transitions. [2021-12-16 03:13:34,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:13:34,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) Word has length 199 [2021-12-16 03:13:34,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:13:34,299 INFO L225 Difference]: With dead ends: 297 [2021-12-16 03:13:34,299 INFO L226 Difference]: Without dead ends: 169 [2021-12-16 03:13:34,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:13:34,301 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 2 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:13:34,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 769 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:13:34,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-16 03:13:34,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-12-16 03:13:34,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 101 states have (on average 1.1287128712871286) internal successors, (114), 102 states have internal predecessors, (114), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-12-16 03:13:34,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 216 transitions. [2021-12-16 03:13:34,311 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 216 transitions. Word has length 199 [2021-12-16 03:13:34,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:13:34,311 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 216 transitions. [2021-12-16 03:13:34,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-16 03:13:34,312 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 216 transitions. [2021-12-16 03:13:34,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-16 03:13:34,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:13:34,314 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:13:34,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 03:13:34,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:34,540 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:13:34,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:13:34,540 INFO L85 PathProgramCache]: Analyzing trace with hash 140333254, now seen corresponding path program 1 times [2021-12-16 03:13:34,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:13:34,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725183358] [2021-12-16 03:13:34,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:34,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:13:34,608 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:13:34,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [302818807] [2021-12-16 03:13:34,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:13:34,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:13:34,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:13:34,610 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) [2021-12-16 03:13:34,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 03:13:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:13:36,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 2983 conjuncts, 336 conjunts are in the unsatisfiable core [2021-12-16 03:13:36,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:13:36,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:13:36,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-16 03:13:36,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-16 03:13:37,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:13:37,283 INFO L354 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2021-12-16 03:13:37,283 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 [2021-12-16 03:13:37,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-16 03:13:37,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:13:37,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-16 03:13:37,655 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-12-16 03:13:37,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2021-12-16 03:13:37,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-16 03:13:38,301 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-12-16 03:13:38,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 37 treesize of output 53 [2021-12-16 03:13:38,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:13:38,886 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|v___CPROVER_overflow_mult_~#c~1.base_54| Int) (v_ArrVal_898 Int)) (and (= 0 (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_54|)) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_54| v_ArrVal_898)))) (exists ((v_ArrVal_911 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_911)))) is different from true [2021-12-16 03:13:43,990 INFO L354 Elim1Store]: treesize reduction 91, result has 30.0 percent of original size [2021-12-16 03:13:43,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 46 treesize of output 69 [2021-12-16 03:13:44,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:13:56,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:13:56,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:13:56,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:13:56,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:13:56,727 INFO L354 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2021-12-16 03:13:56,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 62 [2021-12-16 03:13:56,774 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-16 03:13:56,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18