./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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_priority_queue_init_static_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 23ef598a219073b4e1ea2c3302ab5b9fcd0bd41db1d8d7141c8967f07530c02d --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-03 23:32:57,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 23:32:57,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 23:32:57,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 23:32:57,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 23:32:57,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 23:32:57,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 23:32:57,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 23:32:57,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 23:32:57,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 23:32:57,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 23:32:57,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 23:32:57,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 23:32:57,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 23:32:57,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 23:32:57,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 23:32:57,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 23:32:57,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 23:32:57,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 23:32:57,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 23:32:57,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 23:32:57,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 23:32:57,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 23:32:57,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 23:32:57,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 23:32:57,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 23:32:57,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 23:32:57,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 23:32:57,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 23:32:57,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 23:32:57,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 23:32:57,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 23:32:57,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 23:32:57,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 23:32:57,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 23:32:57,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 23:32:57,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 23:32:57,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 23:32:57,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 23:32:57,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 23:32:57,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 23:32:57,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 23:32:57,806 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 23:32:57,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 23:32:57,810 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 23:32:57,810 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 23:32:57,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 23:32:57,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 23:32:57,811 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 23:32:57,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 23:32:57,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 23:32:57,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 23:32:57,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 23:32:57,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 23:32:57,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 23:32:57,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 23:32:57,813 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 23:32:57,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 23:32:57,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 23:32:57,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 23:32:57,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 23:32:57,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 23:32:57,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 23:32:57,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 23:32:57,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 23:32:57,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 23:32:57,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 23:32:57,814 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 23:32:57,815 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 23:32:57,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 23:32:57,816 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 23:32:57,816 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23ef598a219073b4e1ea2c3302ab5b9fcd0bd41db1d8d7141c8967f07530c02d [2021-11-03 23:32:57,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 23:32:57,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 23:32:57,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 23:32:57,987 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 23:32:58,004 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 23:32:58,005 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness.i [2021-11-03 23:32:58,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/910027a88/e2388b3b2e15453f97c78ce5ae93d970/FLAGbc5ce082f [2021-11-03 23:32:58,676 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 23:32:58,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness.i [2021-11-03 23:32:58,699 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/910027a88/e2388b3b2e15453f97c78ce5ae93d970/FLAGbc5ce082f [2021-11-03 23:32:59,027 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/910027a88/e2388b3b2e15453f97c78ce5ae93d970 [2021-11-03 23:32:59,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 23:32:59,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 23:32:59,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 23:32:59,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 23:32:59,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 23:32:59,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 11:32:59" (1/1) ... [2021-11-03 23:32:59,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6db16265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:32:59, skipping insertion in model container [2021-11-03 23:32:59,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 11:32:59" (1/1) ... [2021-11-03 23:32:59,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 23:32:59,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 23:32:59,379 WARN L228 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_priority_queue_init_static_harness.i[4504,4517] [2021-11-03 23:32:59,386 WARN L228 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_priority_queue_init_static_harness.i[4564,4577] [2021-11-03 23:32:59,405 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 23:32:59,410 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 23:32:59,865 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 23:32:59,925 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:32:59,926 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:32:59,927 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:32:59,927 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:32:59,928 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:32:59,934 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:32:59,935 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:32:59,936 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:32:59,938 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:33:00,125 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 23:33:00,130 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 23:33:00,131 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 23:33:00,136 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 23:33:00,138 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 23:33:00,140 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 23:33:00,140 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 23:33:00,143 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 23:33:00,144 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 23:33:00,144 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 23:33:00,211 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:33:00,212 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:33:00,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 23:33:00,250 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 23:33:00,258 WARN L228 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_priority_queue_init_static_harness.i[4504,4517] [2021-11-03 23:33:00,258 WARN L228 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_priority_queue_init_static_harness.i[4564,4577] [2021-11-03 23:33:00,259 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 23:33:00,259 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 23:33:00,275 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 23:33:00,282 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:33:00,282 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:33:00,282 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:33:00,283 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:33:00,283 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:33:00,286 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:33:00,287 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:33:00,287 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:33:00,287 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:33:00,356 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 23:33:00,357 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 23:33:00,357 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 23:33:00,358 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 23:33:00,358 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 23:33:00,358 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 23:33:00,359 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 23:33:00,359 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 23:33:00,359 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 23:33:00,359 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 23:33:00,376 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:33:00,376 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:33:00,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 23:33:00,536 INFO L208 MainTranslator]: Completed translation [2021-11-03 23:33:00,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:33:00 WrapperNode [2021-11-03 23:33:00,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 23:33:00,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 23:33:00,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 23:33:00,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 23:33:00,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:33:00" (1/1) ... [2021-11-03 23:33:00,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:33:00" (1/1) ... [2021-11-03 23:33:00,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 23:33:00,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 23:33:00,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 23:33:00,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 23:33:00,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:33:00" (1/1) ... [2021-11-03 23:33:00,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:33:00" (1/1) ... [2021-11-03 23:33:00,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:33:00" (1/1) ... [2021-11-03 23:33:00,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:33:00" (1/1) ... [2021-11-03 23:33:00,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:33:00" (1/1) ... [2021-11-03 23:33:00,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:33:00" (1/1) ... [2021-11-03 23:33:00,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:33:00" (1/1) ... [2021-11-03 23:33:00,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 23:33:00,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 23:33:00,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 23:33:00,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 23:33:00,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:33:00" (1/1) ... [2021-11-03 23:33:00,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 23:33:00,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:33:00,828 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) [2021-11-03 23:33:00,859 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 [2021-11-03 23:33:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 23:33:00,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 23:33:00,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 23:33:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 23:33:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 23:33:00,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 23:33:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 23:33:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-03 23:33:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 23:33:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 23:33:00,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 23:33:00,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 23:33:04,986 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 23:33:04,987 INFO L299 CfgBuilder]: Removed 165 assume(true) statements. [2021-11-03 23:33:04,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 11:33:04 BoogieIcfgContainer [2021-11-03 23:33:04,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 23:33:04,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 23:33:04,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 23:33:04,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 23:33:04,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 11:32:59" (1/3) ... [2021-11-03 23:33:04,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218f3f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 11:33:04, skipping insertion in model container [2021-11-03 23:33:04,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:33:00" (2/3) ... [2021-11-03 23:33:04,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218f3f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 11:33:04, skipping insertion in model container [2021-11-03 23:33:04,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 11:33:04" (3/3) ... [2021-11-03 23:33:04,997 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_static_harness.i [2021-11-03 23:33:05,002 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 23:33:05,002 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-03 23:33:05,042 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 23:33:05,050 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 [2021-11-03 23:33:05,051 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-03 23:33:05,073 INFO L276 IsEmpty]: Start isEmpty. Operand has 205 states, 195 states have (on average 1.441025641025641) internal successors, (281), 204 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:33:05,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-03 23:33:05,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:33:05,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:33:05,080 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 23:33:05,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:33:05,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1473699063, now seen corresponding path program 1 times [2021-11-03 23:33:05,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:33:05,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961174428] [2021-11-03 23:33:05,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:33:05,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:33:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:33:05,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:33:05,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:33:05,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961174428] [2021-11-03 23:33:05,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961174428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:33:05,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:33:05,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 23:33:05,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278569278] [2021-11-03 23:33:05,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:33:05,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 23:33:05,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:33:05,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 23:33:05,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 23:33:05,595 INFO L87 Difference]: Start difference. First operand has 205 states, 195 states have (on average 1.441025641025641) internal successors, (281), 204 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:33:07,668 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:33:08,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:33:08,937 INFO L93 Difference]: Finished difference Result 407 states and 558 transitions. [2021-11-03 23:33:08,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 23:33:08,940 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-03 23:33:08,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:33:08,945 INFO L225 Difference]: With dead ends: 407 [2021-11-03 23:33:08,945 INFO L226 Difference]: Without dead ends: 199 [2021-11-03 23:33:08,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 23:33:08,953 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2892.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.65ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3274.01ms IncrementalHoareTripleChecker+Time [2021-11-03 23:33:08,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 252 Unknown, 0 Unchecked, 3.65ms Time], IncrementalHoareTripleChecker [0 Valid, 251 Invalid, 1 Unknown, 0 Unchecked, 3274.01ms Time] [2021-11-03 23:33:08,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-03 23:33:09,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2021-11-03 23:33:09,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 190 states have (on average 1.2894736842105263) internal successors, (245), 198 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:33:09,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 245 transitions. [2021-11-03 23:33:09,022 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 245 transitions. Word has length 43 [2021-11-03 23:33:09,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:33:09,026 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 245 transitions. [2021-11-03 23:33:09,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:33:09,027 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 245 transitions. [2021-11-03 23:33:09,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 23:33:09,029 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:33:09,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:33:09,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 23:33:09,030 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 23:33:09,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:33:09,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1036054349, now seen corresponding path program 1 times [2021-11-03 23:33:09,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:33:09,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273360115] [2021-11-03 23:33:09,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:33:09,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:33:09,198 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:33:09,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761291992] [2021-11-03 23:33:09,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:33:09,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:33:09,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:33:09,212 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) [2021-11-03 23:33:09,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 23:33:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:33:09,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 2463 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 23:33:09,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:33:10,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:33:10,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:33:10,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:33:10,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273360115] [2021-11-03 23:33:10,110 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:33:10,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761291992] [2021-11-03 23:33:10,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761291992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:33:10,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:33:10,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 23:33:10,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954551475] [2021-11-03 23:33:10,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:33:10,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 23:33:10,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:33:10,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 23:33:10,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 23:33:10,112 INFO L87 Difference]: Start difference. First operand 199 states and 245 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:33:12,176 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:33:13,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:33:13,429 INFO L93 Difference]: Finished difference Result 368 states and 457 transitions. [2021-11-03 23:33:13,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 23:33:13,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-03 23:33:13,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:33:13,433 INFO L225 Difference]: With dead ends: 368 [2021-11-03 23:33:13,433 INFO L226 Difference]: Without dead ends: 199 [2021-11-03 23:33:13,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 23:33:13,434 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 216 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3012.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.66ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3264.29ms IncrementalHoareTripleChecker+Time [2021-11-03 23:33:13,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 0 Invalid, 269 Unknown, 0 Unchecked, 6.66ms Time], IncrementalHoareTripleChecker [0 Valid, 268 Invalid, 1 Unknown, 0 Unchecked, 3264.29ms Time] [2021-11-03 23:33:13,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-03 23:33:13,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2021-11-03 23:33:13,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 190 states have (on average 1.2842105263157895) internal successors, (244), 198 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:33:13,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 244 transitions. [2021-11-03 23:33:13,447 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 244 transitions. Word has length 49 [2021-11-03 23:33:13,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:33:13,447 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 244 transitions. [2021-11-03 23:33:13,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:33:13,447 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 244 transitions. [2021-11-03 23:33:13,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 23:33:13,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:33:13,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:33:13,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 23:33:13,668 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 [2021-11-03 23:33:13,669 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 23:33:13,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:33:13,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1480006462, now seen corresponding path program 1 times [2021-11-03 23:33:13,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:33:13,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970771890] [2021-11-03 23:33:13,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:33:13,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:33:13,752 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:33:13,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488599719] [2021-11-03 23:33:13,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:33:13,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:33:13,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:33:13,756 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) [2021-11-03 23:33:13,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 23:33:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:33:14,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 2470 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 23:33:14,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:33:14,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:33:14,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:33:14,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:33:14,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970771890] [2021-11-03 23:33:14,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:33:14,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488599719] [2021-11-03 23:33:14,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488599719] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:33:14,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:33:14,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:33:14,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249205012] [2021-11-03 23:33:14,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:33:14,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:33:14,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:33:14,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:33:14,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:33:14,742 INFO L87 Difference]: Start difference. First operand 199 states and 244 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:33:16,780 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:33:18,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:33:18,354 INFO L93 Difference]: Finished difference Result 372 states and 454 transitions. [2021-11-03 23:33:18,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 23:33:18,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-03 23:33:18,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:33:18,358 INFO L225 Difference]: With dead ends: 372 [2021-11-03 23:33:18,359 INFO L226 Difference]: Without dead ends: 237 [2021-11-03 23:33:18,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 194.29ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-03 23:33:18,360 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1086 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3190.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.24ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3442.49ms IncrementalHoareTripleChecker+Time [2021-11-03 23:33:18,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1086 Valid, 0 Invalid, 511 Unknown, 0 Unchecked, 12.24ms Time], IncrementalHoareTripleChecker [0 Valid, 510 Invalid, 1 Unknown, 0 Unchecked, 3442.49ms Time] [2021-11-03 23:33:18,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-03 23:33:18,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 199. [2021-11-03 23:33:18,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 190 states have (on average 1.2789473684210526) internal successors, (243), 198 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:33:18,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 243 transitions. [2021-11-03 23:33:18,369 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 243 transitions. Word has length 50 [2021-11-03 23:33:18,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:33:18,370 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 243 transitions. [2021-11-03 23:33:18,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:33:18,370 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 243 transitions. [2021-11-03 23:33:18,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-03 23:33:18,371 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:33:18,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:33:18,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 23:33:18,596 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 [2021-11-03 23:33:18,596 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 23:33:18,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:33:18,597 INFO L85 PathProgramCache]: Analyzing trace with hash -463972184, now seen corresponding path program 1 times [2021-11-03 23:33:18,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:33:18,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889394875] [2021-11-03 23:33:18,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:33:18,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:33:18,680 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:33:18,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904712838] [2021-11-03 23:33:18,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:33:18,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:33:18,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:33:18,682 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) [2021-11-03 23:33:18,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 23:33:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:33:19,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 23:33:19,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:33:19,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:33:19,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:33:19,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:33:19,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889394875] [2021-11-03 23:33:19,409 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:33:19,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904712838] [2021-11-03 23:33:19,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904712838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:33:19,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:33:19,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:33:19,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823613165] [2021-11-03 23:33:19,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:33:19,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:33:19,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:33:19,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:33:19,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:33:19,411 INFO L87 Difference]: Start difference. First operand 199 states and 243 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:33:21,446 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:33:23,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:33:23,963 INFO L93 Difference]: Finished difference Result 360 states and 451 transitions. [2021-11-03 23:33:23,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:33:23,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-03 23:33:23,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:33:23,964 INFO L225 Difference]: With dead ends: 360 [2021-11-03 23:33:23,964 INFO L226 Difference]: Without dead ends: 224 [2021-11-03 23:33:23,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.32ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:33:23,965 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4069.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.93ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4488.49ms IncrementalHoareTripleChecker+Time [2021-11-03 23:33:23,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 763 Unknown, 0 Unchecked, 4.93ms Time], IncrementalHoareTripleChecker [17 Valid, 745 Invalid, 1 Unknown, 0 Unchecked, 4488.49ms Time] [2021-11-03 23:33:23,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-11-03 23:33:23,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 209. [2021-11-03 23:33:23,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 200 states have (on average 1.265) internal successors, (253), 208 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:33:23,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 253 transitions. [2021-11-03 23:33:23,982 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 253 transitions. Word has length 58 [2021-11-03 23:33:23,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:33:23,984 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 253 transitions. [2021-11-03 23:33:23,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:33:23,984 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 253 transitions. [2021-11-03 23:33:23,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-03 23:33:23,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:33:23,992 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:33:24,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 23:33:24,207 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 [2021-11-03 23:33:24,207 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 23:33:24,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:33:24,208 INFO L85 PathProgramCache]: Analyzing trace with hash 2055987750, now seen corresponding path program 1 times [2021-11-03 23:33:24,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:33:24,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602765795] [2021-11-03 23:33:24,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:33:24,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:33:24,257 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:33:24,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2143831443] [2021-11-03 23:33:24,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:33:24,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:33:24,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:33:24,259 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) [2021-11-03 23:33:24,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 23:33:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:33:24,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 2565 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-03 23:33:24,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:33:25,457 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 16 treesize of output 12 [2021-11-03 23:33:25,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-03 23:33:25,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:33:25,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:33:25,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:33:25,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602765795] [2021-11-03 23:33:25,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:33:25,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143831443] [2021-11-03 23:33:25,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143831443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:33:25,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:33:25,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 23:33:25,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257812138] [2021-11-03 23:33:25,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:33:25,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 23:33:25,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:33:25,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 23:33:25,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-03 23:33:25,743 INFO L87 Difference]: Start difference. First operand 209 states and 253 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:33:27,784 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:33:32,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:33:32,009 INFO L93 Difference]: Finished difference Result 403 states and 488 transitions. [2021-11-03 23:33:32,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 23:33:32,010 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-03 23:33:32,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:33:32,011 INFO L225 Difference]: With dead ends: 403 [2021-11-03 23:33:32,011 INFO L226 Difference]: Without dead ends: 259 [2021-11-03 23:33:32,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 715.09ms TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2021-11-03 23:33:32,012 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1084 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5340.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.43ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5681.29ms IncrementalHoareTripleChecker+Time [2021-11-03 23:33:32,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1084 Valid, 0 Invalid, 1313 Unknown, 0 Unchecked, 22.43ms Time], IncrementalHoareTripleChecker [31 Valid, 1281 Invalid, 1 Unknown, 0 Unchecked, 5681.29ms Time] [2021-11-03 23:33:32,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-03 23:33:32,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 207. [2021-11-03 23:33:32,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 198 states have (on average 1.2626262626262625) internal successors, (250), 206 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:33:32,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 250 transitions. [2021-11-03 23:33:32,032 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 250 transitions. Word has length 58 [2021-11-03 23:33:32,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:33:32,032 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 250 transitions. [2021-11-03 23:33:32,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:33:32,033 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 250 transitions. [2021-11-03 23:33:32,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 23:33:32,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:33:32,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:33:32,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 23:33:32,259 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 [2021-11-03 23:33:32,259 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 23:33:32,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:33:32,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1896244914, now seen corresponding path program 1 times [2021-11-03 23:33:32,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:33:32,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335295839] [2021-11-03 23:33:32,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:33:32,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:33:32,327 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:33:32,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1202599073] [2021-11-03 23:33:32,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:33:32,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:33:32,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:33:32,344 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) [2021-11-03 23:33:32,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 23:33:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:33:32,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 2565 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 23:33:32,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:33:33,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:33:33,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:33:33,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:33:33,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335295839] [2021-11-03 23:33:33,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:33:33,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202599073] [2021-11-03 23:33:33,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202599073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:33:33,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:33:33,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:33:33,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190794963] [2021-11-03 23:33:33,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:33:33,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:33:33,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:33:33,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:33:33,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:33:33,285 INFO L87 Difference]: Start difference. First operand 207 states and 250 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:33:35,370 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:33:38,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:33:38,640 INFO L93 Difference]: Finished difference Result 452 states and 554 transitions. [2021-11-03 23:33:38,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 23:33:38,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-03 23:33:38,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:33:38,642 INFO L225 Difference]: With dead ends: 452 [2021-11-03 23:33:38,642 INFO L226 Difference]: Without dead ends: 307 [2021-11-03 23:33:38,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 238.07ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:33:38,643 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 130 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4728.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.36ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5168.87ms IncrementalHoareTripleChecker+Time [2021-11-03 23:33:38,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 0 Invalid, 1185 Unknown, 0 Unchecked, 7.36ms Time], IncrementalHoareTripleChecker [31 Valid, 1153 Invalid, 1 Unknown, 0 Unchecked, 5168.87ms Time] [2021-11-03 23:33:38,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-03 23:33:38,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 214. [2021-11-03 23:33:38,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 205 states have (on average 1.2536585365853659) internal successors, (257), 213 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:33:38,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 257 transitions. [2021-11-03 23:33:38,653 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 257 transitions. Word has length 60 [2021-11-03 23:33:38,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:33:38,654 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 257 transitions. [2021-11-03 23:33:38,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:33:38,654 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 257 transitions. [2021-11-03 23:33:38,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 23:33:38,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:33:38,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:33:38,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-03 23:33:38,855 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 [2021-11-03 23:33:38,855 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 23:33:38,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:33:38,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1838986612, now seen corresponding path program 1 times [2021-11-03 23:33:38,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:33:38,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354421754] [2021-11-03 23:33:38,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:33:38,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:33:38,906 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:33:38,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [448512164] [2021-11-03 23:33:38,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:33:38,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:33:38,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:33:38,924 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) [2021-11-03 23:33:38,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 23:36:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:36:17,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 2570 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 23:36:17,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:36:17,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:36:17,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:36:17,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:36:17,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354421754] [2021-11-03 23:36:17,491 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:36:17,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448512164] [2021-11-03 23:36:17,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448512164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:36:17,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:36:17,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:36:17,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794703136] [2021-11-03 23:36:17,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:36:17,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:36:17,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:36:17,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:36:17,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:36:17,492 INFO L87 Difference]: Start difference. First operand 214 states and 257 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:36:19,530 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:36:21,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:36:21,063 INFO L93 Difference]: Finished difference Result 400 states and 485 transitions. [2021-11-03 23:36:21,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:36:21,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-03 23:36:21,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:36:21,065 INFO L225 Difference]: With dead ends: 400 [2021-11-03 23:36:21,065 INFO L226 Difference]: Without dead ends: 216 [2021-11-03 23:36:21,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.56ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:36:21,066 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 215 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3195.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.15ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3536.20ms IncrementalHoareTripleChecker+Time [2021-11-03 23:36:21,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 0 Invalid, 508 Unknown, 0 Unchecked, 3.15ms Time], IncrementalHoareTripleChecker [1 Valid, 506 Invalid, 1 Unknown, 0 Unchecked, 3536.20ms Time] [2021-11-03 23:36:21,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-03 23:36:21,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2021-11-03 23:36:21,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 206 states have (on average 1.2524271844660195) internal successors, (258), 214 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:36:21,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 258 transitions. [2021-11-03 23:36:21,072 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 258 transitions. Word has length 60 [2021-11-03 23:36:21,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:36:21,072 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 258 transitions. [2021-11-03 23:36:21,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:36:21,072 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 258 transitions. [2021-11-03 23:36:21,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-03 23:36:21,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:36:21,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:36:21,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-03 23:36:21,283 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 [2021-11-03 23:36:21,283 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-03 23:36:21,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:36:21,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1314664846, now seen corresponding path program 1 times [2021-11-03 23:36:21,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:36:21,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505391807] [2021-11-03 23:36:21,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:36:21,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:36:21,353 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:36:21,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1426896937] [2021-11-03 23:36:21,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:36:21,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:36:21,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:36:21,355 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) [2021-11-03 23:36:21,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process Killed by 15