./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_capacity_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b8e2b19500a9ff32f182f41fca1db48d6268985503aaacd0cb9efdaafa7d6419 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:20:58,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:20:58,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:20:58,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:20:58,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:20:58,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:20:58,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:20:58,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:20:58,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:20:58,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:20:58,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:20:58,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:20:58,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:20:58,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:20:58,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:20:58,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:20:58,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:20:58,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:20:58,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:20:58,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:20:58,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:20:58,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:20:58,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:20:58,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:20:58,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:20:58,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:20:58,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:20:58,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:20:58,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:20:58,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:20:58,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:20:58,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:20:58,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:20:58,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:20:58,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:20:58,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:20:58,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:20:58,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:20:58,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:20:58,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:20:58,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:20:58,788 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:20:58,822 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:20:58,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:20:58,823 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:20:58,823 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:20:58,824 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:20:58,824 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:20:58,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:20:58,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:20:58,826 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:20:58,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:20:58,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:20:58,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:20:58,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:20:58,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:20:58,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:20:58,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:20:58,827 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:20:58,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:20:58,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:20:58,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:20:58,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:20:58,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:20:58,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:20:58,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:20:58,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:20:58,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:20:58,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:20:58,829 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:20:58,829 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:20:58,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:20:58,829 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8e2b19500a9ff32f182f41fca1db48d6268985503aaacd0cb9efdaafa7d6419 [2021-12-28 03:20:59,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:20:59,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:20:59,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:20:59,152 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:20:59,152 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:20:59,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i [2021-12-28 03:20:59,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df205d298/ebf00360c4074971b2976ca15ff45314/FLAG800c25a78 [2021-12-28 03:20:59,805 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:20:59,806 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i [2021-12-28 03:20:59,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df205d298/ebf00360c4074971b2976ca15ff45314/FLAG800c25a78 [2021-12-28 03:21:00,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df205d298/ebf00360c4074971b2976ca15ff45314 [2021-12-28 03:21:00,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:21:00,246 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:21:00,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:21:00,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:21:00,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:21:00,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:21:00" (1/1) ... [2021-12-28 03:21:00,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@360d8e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:00, skipping insertion in model container [2021-12-28 03:21:00,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:21:00" (1/1) ... [2021-12-28 03:21:00,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:21:00,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:21:00,699 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i[4501,4514] [2021-12-28 03:21:00,705 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i[4561,4574] [2021-12-28 03:21:01,130 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:21:01,178 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:01,179 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:01,179 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:01,180 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:01,180 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:01,187 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:01,187 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:01,188 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:01,189 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:01,386 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:21:01,393 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:21:01,394 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:21:01,395 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:21:01,395 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:21:01,396 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:21:01,396 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:21:01,397 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:21:01,397 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:21:01,397 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:21:01,471 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:01,472 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:01,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:21:01,528 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:21:01,538 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i[4501,4514] [2021-12-28 03:21:01,538 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_capacity_harness.i[4561,4574] [2021-12-28 03:21:01,603 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:21:01,615 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:01,626 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:01,626 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:01,627 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:01,627 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:01,632 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:01,632 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:01,633 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:01,641 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:01,662 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:21:01,662 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:21:01,663 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:21:01,663 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:21:01,664 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:21:01,664 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:21:01,665 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:21:01,665 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:21:01,665 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:21:01,666 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:21:01,694 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:01,696 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:01,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:21:01,880 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:21:01,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:01 WrapperNode [2021-12-28 03:21:01,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:21:01,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:21:01,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:21:01,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:21:01,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:01" (1/1) ... [2021-12-28 03:21:01,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:01" (1/1) ... [2021-12-28 03:21:02,026 INFO L137 Inliner]: procedures = 689, calls = 1536, calls flagged for inlining = 55, calls inlined = 11, statements flattened = 692 [2021-12-28 03:21:02,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:21:02,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:21:02,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:21:02,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:21:02,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:01" (1/1) ... [2021-12-28 03:21:02,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:01" (1/1) ... [2021-12-28 03:21:02,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:01" (1/1) ... [2021-12-28 03:21:02,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:01" (1/1) ... [2021-12-28 03:21:02,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:01" (1/1) ... [2021-12-28 03:21:02,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:01" (1/1) ... [2021-12-28 03:21:02,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:01" (1/1) ... [2021-12-28 03:21:02,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:21:02,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:21:02,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:21:02,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:21:02,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:01" (1/1) ... [2021-12-28 03:21:02,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:21:02,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:02,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 03:21:02,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 03:21:02,233 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-28 03:21:02,233 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-28 03:21:02,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:21:02,233 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-28 03:21:02,234 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-28 03:21:02,234 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-28 03:21:02,234 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-28 03:21:02,234 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-28 03:21:02,235 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-28 03:21:02,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:21:02,235 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-28 03:21:02,236 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-28 03:21:02,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 03:21:02,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 03:21:02,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:21:02,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:21:02,237 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-12-28 03:21:02,237 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-12-28 03:21:02,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:21:02,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:21:02,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:21:02,237 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-28 03:21:02,238 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-28 03:21:02,238 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-28 03:21:02,238 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-28 03:21:02,238 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-28 03:21:02,238 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-28 03:21:02,238 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-28 03:21:02,238 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-28 03:21:02,238 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:21:02,238 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:21:02,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:21:02,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:21:02,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:21:02,239 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-28 03:21:02,239 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-28 03:21:02,240 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-28 03:21:02,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-28 03:21:02,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:21:02,240 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2021-12-28 03:21:02,240 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2021-12-28 03:21:02,240 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-28 03:21:02,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-28 03:21:02,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:21:02,478 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:21:02,479 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:21:03,043 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:21:03,048 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:21:03,049 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 03:21:03,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:21:03 BoogieIcfgContainer [2021-12-28 03:21:03,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:21:03,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:21:03,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:21:03,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:21:03,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:21:00" (1/3) ... [2021-12-28 03:21:03,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625525d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:21:03, skipping insertion in model container [2021-12-28 03:21:03,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:01" (2/3) ... [2021-12-28 03:21:03,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625525d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:21:03, skipping insertion in model container [2021-12-28 03:21:03,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:21:03" (3/3) ... [2021-12-28 03:21:03,056 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_capacity_harness.i [2021-12-28 03:21:03,060 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:21:03,060 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:21:03,092 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:21:03,097 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 03:21:03,098 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:21:03,110 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 112 states have (on average 1.2232142857142858) internal successors, (137), 113 states have internal predecessors, (137), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-12-28 03:21:03,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-28 03:21:03,118 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:03,119 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:03,119 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:03,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:03,123 INFO L85 PathProgramCache]: Analyzing trace with hash -626335346, now seen corresponding path program 1 times [2021-12-28 03:21:03,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:03,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540901588] [2021-12-28 03:21:03,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:03,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:03,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:21:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:03,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:21:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:03,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:21:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:03,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 03:21:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:03,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:21:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:03,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:21:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:03,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:21:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:03,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:21:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:03,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:21:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:03,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 03:21:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:03,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:21:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:03,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 03:21:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:03,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 03:21:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:03,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 03:21:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:03,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 03:21:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:03,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 03:21:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:03,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 03:21:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:03,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 03:21:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:03,777 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-12-28 03:21:03,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:03,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540901588] [2021-12-28 03:21:03,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540901588] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:03,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:03,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:21:03,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709338251] [2021-12-28 03:21:03,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:03,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:21:03,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:03,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:21:03,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:21:03,808 INFO L87 Difference]: Start difference. First operand has 170 states, 112 states have (on average 1.2232142857142858) internal successors, (137), 113 states have internal predecessors, (137), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 03:21:04,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:04,160 INFO L93 Difference]: Finished difference Result 383 states and 537 transitions. [2021-12-28 03:21:04,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:21:04,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 110 [2021-12-28 03:21:04,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:04,169 INFO L225 Difference]: With dead ends: 383 [2021-12-28 03:21:04,170 INFO L226 Difference]: Without dead ends: 219 [2021-12-28 03:21:04,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:21:04,175 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 200 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:04,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 330 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 03:21:04,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-12-28 03:21:04,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 165. [2021-12-28 03:21:04,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 108 states have (on average 1.2037037037037037) internal successors, (130), 109 states have internal predecessors, (130), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-12-28 03:21:04,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 209 transitions. [2021-12-28 03:21:04,214 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 209 transitions. Word has length 110 [2021-12-28 03:21:04,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:04,215 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 209 transitions. [2021-12-28 03:21:04,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 03:21:04,215 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 209 transitions. [2021-12-28 03:21:04,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-28 03:21:04,217 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:04,218 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:04,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:21:04,218 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:04,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:04,219 INFO L85 PathProgramCache]: Analyzing trace with hash 726994572, now seen corresponding path program 1 times [2021-12-28 03:21:04,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:04,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024958475] [2021-12-28 03:21:04,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:04,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:04,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:21:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:04,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:21:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:04,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:21:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:04,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 03:21:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:04,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:21:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:04,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:21:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:04,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:21:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:04,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:21:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:04,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:21:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:04,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 03:21:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:04,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:21:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:04,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 03:21:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:04,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 03:21:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:04,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 03:21:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:04,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 03:21:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:04,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 03:21:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:04,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 03:21:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:04,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 03:21:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:04,519 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-12-28 03:21:04,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:04,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024958475] [2021-12-28 03:21:04,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024958475] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:04,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:04,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:21:04,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259666197] [2021-12-28 03:21:04,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:04,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:21:04,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:04,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:21:04,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:21:04,522 INFO L87 Difference]: Start difference. First operand 165 states and 209 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-28 03:21:05,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:05,044 INFO L93 Difference]: Finished difference Result 342 states and 453 transitions. [2021-12-28 03:21:05,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:21:05,045 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 110 [2021-12-28 03:21:05,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:05,047 INFO L225 Difference]: With dead ends: 342 [2021-12-28 03:21:05,047 INFO L226 Difference]: Without dead ends: 219 [2021-12-28 03:21:05,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:21:05,049 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 326 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:05,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 540 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 03:21:05,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-12-28 03:21:05,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 165. [2021-12-28 03:21:05,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 108 states have (on average 1.1944444444444444) internal successors, (129), 109 states have internal predecessors, (129), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-12-28 03:21:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 208 transitions. [2021-12-28 03:21:05,062 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 208 transitions. Word has length 110 [2021-12-28 03:21:05,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:05,062 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 208 transitions. [2021-12-28 03:21:05,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-28 03:21:05,062 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 208 transitions. [2021-12-28 03:21:05,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-28 03:21:05,064 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:05,064 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:05,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:21:05,064 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:05,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:05,065 INFO L85 PathProgramCache]: Analyzing trace with hash 691144694, now seen corresponding path program 1 times [2021-12-28 03:21:05,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:05,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357087706] [2021-12-28 03:21:05,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:05,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:05,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:21:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:05,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:21:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:05,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:21:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:05,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 03:21:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:05,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:21:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:05,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:21:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:05,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:21:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:05,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:21:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:05,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:21:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:05,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 03:21:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:05,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:21:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:05,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:21:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:05,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 03:21:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:05,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 03:21:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:05,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 03:21:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:05,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 03:21:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:05,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 03:21:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:05,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 03:21:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:05,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 03:21:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:05,431 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-12-28 03:21:05,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:05,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357087706] [2021-12-28 03:21:05,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357087706] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:21:05,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255440734] [2021-12-28 03:21:05,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:05,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:05,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:05,444 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:21:05,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:21:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:05,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 2338 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:21:05,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:06,049 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-12-28 03:21:06,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:06,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255440734] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:06,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:21:06,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2021-12-28 03:21:06,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997766987] [2021-12-28 03:21:06,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:06,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:21:06,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:06,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:21:06,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:21:06,052 INFO L87 Difference]: Start difference. First operand 165 states and 208 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-28 03:21:06,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:06,159 INFO L93 Difference]: Finished difference Result 307 states and 396 transitions. [2021-12-28 03:21:06,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:21:06,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 118 [2021-12-28 03:21:06,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:06,161 INFO L225 Difference]: With dead ends: 307 [2021-12-28 03:21:06,161 INFO L226 Difference]: Without dead ends: 167 [2021-12-28 03:21:06,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:21:06,163 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 70 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:06,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 1126 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:21:06,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-12-28 03:21:06,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2021-12-28 03:21:06,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 109 states have (on average 1.1926605504587156) internal successors, (130), 111 states have internal predecessors, (130), 40 states have call successors, (40), 16 states have call predecessors, (40), 17 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2021-12-28 03:21:06,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 212 transitions. [2021-12-28 03:21:06,176 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 212 transitions. Word has length 118 [2021-12-28 03:21:06,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:06,176 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 212 transitions. [2021-12-28 03:21:06,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-28 03:21:06,177 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 212 transitions. [2021-12-28 03:21:06,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-28 03:21:06,178 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:06,178 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:06,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:06,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:06,400 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:06,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:06,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1403025034, now seen corresponding path program 1 times [2021-12-28 03:21:06,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:06,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374136460] [2021-12-28 03:21:06,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:06,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:06,453 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:06,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915460692] [2021-12-28 03:21:06,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:06,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:06,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:06,455 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:21:06,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:21:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:06,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 03:21:06,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:07,048 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-28 03:21:07,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:07,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:07,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374136460] [2021-12-28 03:21:07,049 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:07,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915460692] [2021-12-28 03:21:07,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915460692] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:07,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:07,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:21:07,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211301810] [2021-12-28 03:21:07,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:07,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:21:07,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:07,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:21:07,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:21:07,051 INFO L87 Difference]: Start difference. First operand 167 states and 212 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-28 03:21:07,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:07,072 INFO L93 Difference]: Finished difference Result 295 states and 383 transitions. [2021-12-28 03:21:07,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:21:07,072 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), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 133 [2021-12-28 03:21:07,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:07,074 INFO L225 Difference]: With dead ends: 295 [2021-12-28 03:21:07,074 INFO L226 Difference]: Without dead ends: 172 [2021-12-28 03:21:07,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:21:07,075 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 10 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:07,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 611 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:21:07,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-12-28 03:21:07,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 169. [2021-12-28 03:21:07,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 111 states have (on average 1.1891891891891893) internal successors, (132), 113 states have internal predecessors, (132), 40 states have call successors, (40), 16 states have call predecessors, (40), 17 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2021-12-28 03:21:07,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 214 transitions. [2021-12-28 03:21:07,085 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 214 transitions. Word has length 133 [2021-12-28 03:21:07,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:07,085 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 214 transitions. [2021-12-28 03:21:07,086 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), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-28 03:21:07,086 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 214 transitions. [2021-12-28 03:21:07,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-28 03:21:07,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:07,087 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:07,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:07,308 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,SelfDestructingSolverStorable3 [2021-12-28 03:21:07,309 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:07,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:07,309 INFO L85 PathProgramCache]: Analyzing trace with hash -558549624, now seen corresponding path program 1 times [2021-12-28 03:21:07,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:07,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850064381] [2021-12-28 03:21:07,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:07,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:07,365 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:07,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165965386] [2021-12-28 03:21:07,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:07,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:07,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:07,380 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:21:07,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 03:21:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:07,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 2479 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 03:21:07,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:08,020 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-12-28 03:21:08,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:08,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:08,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850064381] [2021-12-28 03:21:08,024 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:08,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165965386] [2021-12-28 03:21:08,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165965386] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:08,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:08,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:21:08,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613314983] [2021-12-28 03:21:08,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:08,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:21:08,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:08,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:21:08,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:21:08,029 INFO L87 Difference]: Start difference. First operand 169 states and 214 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-28 03:21:08,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:08,212 INFO L93 Difference]: Finished difference Result 297 states and 378 transitions. [2021-12-28 03:21:08,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:21:08,213 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 133 [2021-12-28 03:21:08,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:08,214 INFO L225 Difference]: With dead ends: 297 [2021-12-28 03:21:08,214 INFO L226 Difference]: Without dead ends: 169 [2021-12-28 03:21:08,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:21:08,216 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 242 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:08,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 787 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:21:08,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-28 03:21:08,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-12-28 03:21:08,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 111 states have (on average 1.1801801801801801) internal successors, (131), 113 states have internal predecessors, (131), 40 states have call successors, (40), 16 states have call predecessors, (40), 17 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2021-12-28 03:21:08,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 213 transitions. [2021-12-28 03:21:08,243 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 213 transitions. Word has length 133 [2021-12-28 03:21:08,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:08,244 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 213 transitions. [2021-12-28 03:21:08,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-28 03:21:08,244 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 213 transitions. [2021-12-28 03:21:08,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-28 03:21:08,245 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:08,245 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:08,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-28 03:21:08,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:08,465 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:08,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:08,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1813374097, now seen corresponding path program 1 times [2021-12-28 03:21:08,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:08,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8805187] [2021-12-28 03:21:08,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:08,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:08,529 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:08,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1373952742] [2021-12-28 03:21:08,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:08,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:08,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:08,531 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:21:08,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 03:21:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:09,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 2551 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:21:09,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:09,241 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-28 03:21:09,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:09,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:09,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8805187] [2021-12-28 03:21:09,242 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:09,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373952742] [2021-12-28 03:21:09,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373952742] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:09,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:09,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:21:09,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012282975] [2021-12-28 03:21:09,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:09,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:21:09,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:09,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:21:09,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:21:09,244 INFO L87 Difference]: Start difference. First operand 169 states and 213 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2021-12-28 03:21:09,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:09,374 INFO L93 Difference]: Finished difference Result 310 states and 395 transitions. [2021-12-28 03:21:09,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:21:09,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 149 [2021-12-28 03:21:09,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:09,376 INFO L225 Difference]: With dead ends: 310 [2021-12-28 03:21:09,376 INFO L226 Difference]: Without dead ends: 169 [2021-12-28 03:21:09,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:21:09,377 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 109 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:09,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 1179 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:21:09,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-28 03:21:09,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-12-28 03:21:09,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 111 states have (on average 1.1801801801801801) internal successors, (131), 113 states have internal predecessors, (131), 40 states have call successors, (40), 16 states have call predecessors, (40), 17 states have return successors, (41), 39 states have call predecessors, (41), 39 states have call successors, (41) [2021-12-28 03:21:09,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 212 transitions. [2021-12-28 03:21:09,386 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 212 transitions. Word has length 149 [2021-12-28 03:21:09,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:09,386 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 212 transitions. [2021-12-28 03:21:09,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2021-12-28 03:21:09,387 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 212 transitions. [2021-12-28 03:21:09,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-28 03:21:09,388 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:09,388 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:09,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-28 03:21:09,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:09,608 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:09,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:09,608 INFO L85 PathProgramCache]: Analyzing trace with hash 770964543, now seen corresponding path program 2 times [2021-12-28 03:21:09,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:09,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859837761] [2021-12-28 03:21:09,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:09,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:09,647 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:09,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787260089] [2021-12-28 03:21:09,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:21:09,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:09,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:09,649 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:21:09,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 03:21:10,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:21:10,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:21:10,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 2692 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:21:10,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:10,540 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-12-28 03:21:10,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:10,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:10,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859837761] [2021-12-28 03:21:10,541 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:10,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787260089] [2021-12-28 03:21:10,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787260089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:10,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:10,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:21:10,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622417560] [2021-12-28 03:21:10,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:10,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:21:10,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:10,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:21:10,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:21:10,544 INFO L87 Difference]: Start difference. First operand 169 states and 212 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-28 03:21:10,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:10,634 INFO L93 Difference]: Finished difference Result 276 states and 344 transitions. [2021-12-28 03:21:10,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:21:10,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 164 [2021-12-28 03:21:10,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:10,636 INFO L225 Difference]: With dead ends: 276 [2021-12-28 03:21:10,636 INFO L226 Difference]: Without dead ends: 167 [2021-12-28 03:21:10,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:21:10,637 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 27 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:10,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 887 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:21:10,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-12-28 03:21:10,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2021-12-28 03:21:10,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 110 states have (on average 1.1727272727272726) internal successors, (129), 111 states have internal predecessors, (129), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-12-28 03:21:10,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 208 transitions. [2021-12-28 03:21:10,658 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 208 transitions. Word has length 164 [2021-12-28 03:21:10,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:10,659 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 208 transitions. [2021-12-28 03:21:10,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-28 03:21:10,659 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 208 transitions. [2021-12-28 03:21:10,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-28 03:21:10,661 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:10,662 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:10,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:10,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:10,884 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:10,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:10,885 INFO L85 PathProgramCache]: Analyzing trace with hash -534191969, now seen corresponding path program 1 times [2021-12-28 03:21:10,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:10,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882576683] [2021-12-28 03:21:10,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:10,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:11,035 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:11,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [135016708] [2021-12-28 03:21:11,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:11,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:11,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:11,053 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:21:11,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 03:21:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:11,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 2974 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 03:21:11,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:11,913 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-12-28 03:21:11,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:11,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:11,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882576683] [2021-12-28 03:21:11,914 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:11,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135016708] [2021-12-28 03:21:11,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135016708] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:11,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:11,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:21:11,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652057338] [2021-12-28 03:21:11,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:11,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:21:11,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:11,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:21:11,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:21:11,917 INFO L87 Difference]: Start difference. First operand 167 states and 208 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-28 03:21:12,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:12,161 INFO L93 Difference]: Finished difference Result 308 states and 389 transitions. [2021-12-28 03:21:12,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:21:12,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 194 [2021-12-28 03:21:12,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:12,163 INFO L225 Difference]: With dead ends: 308 [2021-12-28 03:21:12,163 INFO L226 Difference]: Without dead ends: 185 [2021-12-28 03:21:12,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:21:12,165 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 21 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:12,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 893 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:21:12,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-28 03:21:12,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 171. [2021-12-28 03:21:12,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 114 states have (on average 1.1754385964912282) internal successors, (134), 115 states have internal predecessors, (134), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-12-28 03:21:12,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 213 transitions. [2021-12-28 03:21:12,175 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 213 transitions. Word has length 194 [2021-12-28 03:21:12,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:12,175 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 213 transitions. [2021-12-28 03:21:12,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-28 03:21:12,176 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 213 transitions. [2021-12-28 03:21:12,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-28 03:21:12,177 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:12,178 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:12,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:12,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:12,400 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:12,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:12,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1304925535, now seen corresponding path program 1 times [2021-12-28 03:21:12,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:12,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001886591] [2021-12-28 03:21:12,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:12,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:12,471 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:12,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [610298020] [2021-12-28 03:21:12,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:12,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:12,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:12,473 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:21:12,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 03:21:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:12,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 2971 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 03:21:12,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:13,162 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-12-28 03:21:13,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:13,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:13,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001886591] [2021-12-28 03:21:13,163 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:13,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610298020] [2021-12-28 03:21:13,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610298020] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:13,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:13,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:21:13,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740501444] [2021-12-28 03:21:13,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:13,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:21:13,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:13,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:21:13,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:21:13,166 INFO L87 Difference]: Start difference. First operand 171 states and 213 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-28 03:21:13,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:13,192 INFO L93 Difference]: Finished difference Result 302 states and 379 transitions. [2021-12-28 03:21:13,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:21:13,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 194 [2021-12-28 03:21:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:13,196 INFO L225 Difference]: With dead ends: 302 [2021-12-28 03:21:13,196 INFO L226 Difference]: Without dead ends: 175 [2021-12-28 03:21:13,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:21:13,198 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 3 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:13,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 604 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:21:13,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-12-28 03:21:13,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2021-12-28 03:21:13,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 116 states have (on average 1.1724137931034482) internal successors, (136), 117 states have internal predecessors, (136), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-12-28 03:21:13,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 215 transitions. [2021-12-28 03:21:13,208 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 215 transitions. Word has length 194 [2021-12-28 03:21:13,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:13,209 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 215 transitions. [2021-12-28 03:21:13,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-28 03:21:13,209 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 215 transitions. [2021-12-28 03:21:13,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-28 03:21:13,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:13,211 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:13,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:13,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:13,425 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:13,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:13,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1891201757, now seen corresponding path program 1 times [2021-12-28 03:21:13,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:13,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223619879] [2021-12-28 03:21:13,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:13,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:13,482 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:13,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [81575866] [2021-12-28 03:21:13,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:13,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:13,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:13,496 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:21:13,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-28 03:21:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:13,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-28 03:21:13,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:14,255 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2021-12-28 03:21:14,357 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-28 03:21:14,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:14,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:14,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223619879] [2021-12-28 03:21:14,358 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:14,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81575866] [2021-12-28 03:21:14,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81575866] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:14,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:14,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 03:21:14,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389270029] [2021-12-28 03:21:14,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:14,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 03:21:14,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:14,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 03:21:14,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:21:14,362 INFO L87 Difference]: Start difference. First operand 173 states and 215 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 6 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2021-12-28 03:21:14,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:14,650 INFO L93 Difference]: Finished difference Result 327 states and 415 transitions. [2021-12-28 03:21:14,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:21:14,651 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 6 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) Word has length 194 [2021-12-28 03:21:14,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:14,652 INFO L225 Difference]: With dead ends: 327 [2021-12-28 03:21:14,652 INFO L226 Difference]: Without dead ends: 196 [2021-12-28 03:21:14,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:21:14,653 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 111 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:14,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 1471 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:21:14,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-12-28 03:21:14,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 186. [2021-12-28 03:21:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 128 states have (on average 1.1796875) internal successors, (151), 129 states have internal predecessors, (151), 40 states have call successors, (40), 16 states have call predecessors, (40), 17 states have return successors, (43), 40 states have call predecessors, (43), 39 states have call successors, (43) [2021-12-28 03:21:14,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 234 transitions. [2021-12-28 03:21:14,660 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 234 transitions. Word has length 194 [2021-12-28 03:21:14,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:14,661 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 234 transitions. [2021-12-28 03:21:14,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 6 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2021-12-28 03:21:14,661 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 234 transitions. [2021-12-28 03:21:14,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-28 03:21:14,662 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:14,663 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:14,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:14,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-28 03:21:14,884 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:14,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:14,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1820193313, now seen corresponding path program 1 times [2021-12-28 03:21:14,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:14,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956372861] [2021-12-28 03:21:14,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:14,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:14,926 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:14,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [439550136] [2021-12-28 03:21:14,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:14,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:14,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:14,928 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:21:14,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-28 03:21:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:15,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 2969 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-28 03:21:15,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:15,647 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-12-28 03:21:15,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:15,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:15,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956372861] [2021-12-28 03:21:15,648 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:15,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439550136] [2021-12-28 03:21:15,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439550136] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:15,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:15,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:21:15,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927683157] [2021-12-28 03:21:15,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:15,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:21:15,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:15,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:21:15,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:21:15,650 INFO L87 Difference]: Start difference. First operand 186 states and 234 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-28 03:21:15,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:15,678 INFO L93 Difference]: Finished difference Result 344 states and 437 transitions. [2021-12-28 03:21:15,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:21:15,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 194 [2021-12-28 03:21:15,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:15,680 INFO L225 Difference]: With dead ends: 344 [2021-12-28 03:21:15,680 INFO L226 Difference]: Without dead ends: 202 [2021-12-28 03:21:15,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:21:15,681 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 9 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:15,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 826 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:21:15,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-12-28 03:21:15,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 196. [2021-12-28 03:21:15,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 138 states have (on average 1.181159420289855) internal successors, (163), 139 states have internal predecessors, (163), 40 states have call successors, (40), 16 states have call predecessors, (40), 17 states have return successors, (43), 40 states have call predecessors, (43), 39 states have call successors, (43) [2021-12-28 03:21:15,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 246 transitions. [2021-12-28 03:21:15,689 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 246 transitions. Word has length 194 [2021-12-28 03:21:15,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:15,690 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 246 transitions. [2021-12-28 03:21:15,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-28 03:21:15,690 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 246 transitions. [2021-12-28 03:21:15,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-28 03:21:15,691 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:15,692 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:15,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:15,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:15,914 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:15,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:15,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1417700959, now seen corresponding path program 1 times [2021-12-28 03:21:15,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:15,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430542109] [2021-12-28 03:21:15,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:15,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:15,963 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:15,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1095440121] [2021-12-28 03:21:15,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:15,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:15,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:15,965 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:21:15,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-28 03:21:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:16,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 2971 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 03:21:16,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:16,658 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-12-28 03:21:16,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:16,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:16,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430542109] [2021-12-28 03:21:16,659 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:16,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095440121] [2021-12-28 03:21:16,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095440121] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:16,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:16,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:21:16,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266014604] [2021-12-28 03:21:16,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:16,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:21:16,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:16,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:21:16,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:21:16,660 INFO L87 Difference]: Start difference. First operand 196 states and 246 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-28 03:21:16,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:16,680 INFO L93 Difference]: Finished difference Result 344 states and 434 transitions. [2021-12-28 03:21:16,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:21:16,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 194 [2021-12-28 03:21:16,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:16,681 INFO L225 Difference]: With dead ends: 344 [2021-12-28 03:21:16,681 INFO L226 Difference]: Without dead ends: 192 [2021-12-28 03:21:16,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:21:16,682 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 2 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:16,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 606 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:21:16,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-12-28 03:21:16,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 188. [2021-12-28 03:21:16,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 130 states have (on average 1.1615384615384616) internal successors, (151), 131 states have internal predecessors, (151), 40 states have call successors, (40), 16 states have call predecessors, (40), 17 states have return successors, (43), 40 states have call predecessors, (43), 39 states have call successors, (43) [2021-12-28 03:21:16,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 234 transitions. [2021-12-28 03:21:16,689 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 234 transitions. Word has length 194 [2021-12-28 03:21:16,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:16,689 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 234 transitions. [2021-12-28 03:21:16,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-28 03:21:16,689 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 234 transitions. [2021-12-28 03:21:16,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-12-28 03:21:16,690 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:16,690 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:16,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:16,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-28 03:21:16,912 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:16,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:16,912 INFO L85 PathProgramCache]: Analyzing trace with hash 904679995, now seen corresponding path program 1 times [2021-12-28 03:21:16,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:16,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221000987] [2021-12-28 03:21:16,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:16,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:16,998 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:16,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438939786] [2021-12-28 03:21:16,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:16,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:16,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:17,000 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:21:17,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-28 03:21:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:17,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:21:17,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:17,846 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-12-28 03:21:17,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:17,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:17,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221000987] [2021-12-28 03:21:17,846 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:17,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438939786] [2021-12-28 03:21:17,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438939786] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:17,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:17,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:21:17,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054151908] [2021-12-28 03:21:17,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:17,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:21:17,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:17,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:21:17,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:21:17,848 INFO L87 Difference]: Start difference. First operand 188 states and 234 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-28 03:21:18,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:18,079 INFO L93 Difference]: Finished difference Result 332 states and 420 transitions. [2021-12-28 03:21:18,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:21:18,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 196 [2021-12-28 03:21:18,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:18,081 INFO L225 Difference]: With dead ends: 332 [2021-12-28 03:21:18,081 INFO L226 Difference]: Without dead ends: 188 [2021-12-28 03:21:18,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:21:18,082 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 7 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:18,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 751 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:21:18,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-12-28 03:21:18,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-12-28 03:21:18,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 130 states have (on average 1.1538461538461537) internal successors, (150), 131 states have internal predecessors, (150), 40 states have call successors, (40), 16 states have call predecessors, (40), 17 states have return successors, (43), 40 states have call predecessors, (43), 39 states have call successors, (43) [2021-12-28 03:21:18,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 233 transitions. [2021-12-28 03:21:18,089 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 233 transitions. Word has length 196 [2021-12-28 03:21:18,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:18,089 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 233 transitions. [2021-12-28 03:21:18,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-28 03:21:18,089 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 233 transitions. [2021-12-28 03:21:18,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-12-28 03:21:18,090 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:18,090 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:18,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:18,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-28 03:21:18,319 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:18,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:18,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1935720893, now seen corresponding path program 1 times [2021-12-28 03:21:18,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:18,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503093978] [2021-12-28 03:21:18,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:18,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:18,376 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:18,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664874468] [2021-12-28 03:21:18,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:18,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:18,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:18,378 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:21:18,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-28 03:21:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:18,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 2971 conjuncts, 122 conjunts are in the unsatisfiable core [2021-12-28 03:21:18,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:30,547 INFO L353 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-28 03:21:30,547 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2021-12-28 03:21:30,554 INFO L353 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-28 03:21:30,554 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2021-12-28 03:21:30,558 INFO L353 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-28 03:21:30,558 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2021-12-28 03:21:30,744 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 149 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-28 03:21:30,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:21:31,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:31,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503093978] [2021-12-28 03:21:31,437 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:31,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664874468] [2021-12-28 03:21:31,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664874468] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:21:31,437 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:21:31,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-12-28 03:21:31,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433436583] [2021-12-28 03:21:31,437 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-28 03:21:31,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-28 03:21:31,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:31,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-28 03:21:31,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=841, Unknown=2, NotChecked=0, Total=930 [2021-12-28 03:21:31,438 INFO L87 Difference]: Start difference. First operand 188 states and 233 transitions. Second operand has 22 states, 21 states have (on average 4.619047619047619) internal successors, (97), 20 states have internal predecessors, (97), 8 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (23), 7 states have call predecessors, (23), 8 states have call successors, (23) [2021-12-28 03:21:36,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:36,613 INFO L93 Difference]: Finished difference Result 414 states and 524 transitions. [2021-12-28 03:21:36,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-28 03:21:36,613 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.619047619047619) internal successors, (97), 20 states have internal predecessors, (97), 8 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (23), 7 states have call predecessors, (23), 8 states have call successors, (23) Word has length 196 [2021-12-28 03:21:36,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:36,614 INFO L225 Difference]: With dead ends: 414 [2021-12-28 03:21:36,615 INFO L226 Difference]: Without dead ends: 284 [2021-12-28 03:21:36,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 226 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=354, Invalid=3183, Unknown=3, NotChecked=0, Total=3540 [2021-12-28 03:21:36,616 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 300 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 2840 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 3205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 248 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:36,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 1095 Invalid, 3205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 2840 Invalid, 0 Unknown, 248 Unchecked, 1.8s Time] [2021-12-28 03:21:36,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-12-28 03:21:36,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 215. [2021-12-28 03:21:36,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 149 states have (on average 1.1476510067114094) internal successors, (171), 152 states have internal predecessors, (171), 45 states have call successors, (45), 17 states have call predecessors, (45), 20 states have return successors, (53), 45 states have call predecessors, (53), 44 states have call successors, (53) [2021-12-28 03:21:36,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 269 transitions. [2021-12-28 03:21:36,627 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 269 transitions. Word has length 196 [2021-12-28 03:21:36,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:36,627 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 269 transitions. [2021-12-28 03:21:36,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.619047619047619) internal successors, (97), 20 states have internal predecessors, (97), 8 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (23), 7 states have call predecessors, (23), 8 states have call successors, (23) [2021-12-28 03:21:36,627 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 269 transitions. [2021-12-28 03:21:36,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-12-28 03:21:36,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:36,629 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:36,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:36,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-28 03:21:36,850 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:36,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:36,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1509739381, now seen corresponding path program 1 times [2021-12-28 03:21:36,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:36,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465496037] [2021-12-28 03:21:36,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:36,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:36,901 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:36,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [558330470] [2021-12-28 03:21:36,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:36,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:36,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:36,903 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:21:36,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-28 03:21:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:37,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 3016 conjuncts, 108 conjunts are in the unsatisfiable core [2021-12-28 03:21:37,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:37,483 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-28 03:21:37,798 INFO L353 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-28 03:21:37,798 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-28 03:21:39,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:21:39,850 INFO L387 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 23 treesize of output 22 [2021-12-28 03:21:41,984 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2056 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2056) |c_#memory_int|)) is different from true [2021-12-28 03:21:44,220 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (<= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| |c_aws_mul_size_checked_#in~r#1.offset|) (exists ((v_ArrVal_2058 Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_2058)) |c_#memory_int|)))) is different from true [2021-12-28 03:21:52,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:21:52,776 INFO L353 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2021-12-28 03:21:52,776 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 1 [2021-12-28 03:21:52,876 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 151 proven. 20 refuted. 0 times theorem prover too weak. 71 trivial. 3 not checked. [2021-12-28 03:21:52,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:21:54,049 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.offset_8| Int) (|v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.base_8| Int)) (not (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.base_8|) (+ |v_ULTIMATE.start_aws_priority_queue_capacity_harness_~#old_backpointers~0#1.offset_8| 8)) (select (select |c_#memory_int| |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.base|) (+ 56 |c_ULTIMATE.start_aws_priority_queue_capacity_harness_~#queue~0#1.offset|))))) is different from false [2021-12-28 03:21:54,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:54,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465496037] [2021-12-28 03:21:54,060 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:54,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558330470] [2021-12-28 03:21:54,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558330470] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:21:54,060 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:21:54,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2021-12-28 03:21:54,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020946717] [2021-12-28 03:21:54,060 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-28 03:21:54,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-28 03:21:54,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:54,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-28 03:21:54,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=775, Unknown=13, NotChecked=174, Total=1056 [2021-12-28 03:21:54,062 INFO L87 Difference]: Start difference. First operand 215 states and 269 transitions. Second operand has 32 states, 29 states have (on average 3.8620689655172415) internal successors, (112), 28 states have internal predecessors, (112), 12 states have call successors, (28), 7 states have call predecessors, (28), 11 states have return successors, (27), 12 states have call predecessors, (27), 12 states have call successors, (27) [2021-12-28 03:22:01,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:01,534 INFO L93 Difference]: Finished difference Result 476 states and 601 transitions. [2021-12-28 03:22:01,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-28 03:22:01,535 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 3.8620689655172415) internal successors, (112), 28 states have internal predecessors, (112), 12 states have call successors, (28), 7 states have call predecessors, (28), 11 states have return successors, (27), 12 states have call predecessors, (27), 12 states have call successors, (27) Word has length 203 [2021-12-28 03:22:01,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:01,536 INFO L225 Difference]: With dead ends: 476 [2021-12-28 03:22:01,537 INFO L226 Difference]: Without dead ends: 310 [2021-12-28 03:22:01,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 235 SyntacticMatches, 8 SemanticMatches, 41 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 21.8s TimeCoverageRelationStatistics Valid=151, Invalid=1392, Unknown=29, NotChecked=234, Total=1806 [2021-12-28 03:22:01,538 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 181 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 3242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1724 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:01,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 1484 Invalid, 3242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1393 Invalid, 0 Unknown, 1724 Unchecked, 0.8s Time] [2021-12-28 03:22:01,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-12-28 03:22:01,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 274. [2021-12-28 03:22:01,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 195 states have (on average 1.1435897435897435) internal successors, (223), 200 states have internal predecessors, (223), 50 states have call successors, (50), 22 states have call predecessors, (50), 28 states have return successors, (75), 51 states have call predecessors, (75), 49 states have call successors, (75) [2021-12-28 03:22:01,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 348 transitions. [2021-12-28 03:22:01,555 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 348 transitions. Word has length 203 [2021-12-28 03:22:01,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:01,555 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 348 transitions. [2021-12-28 03:22:01,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 3.8620689655172415) internal successors, (112), 28 states have internal predecessors, (112), 12 states have call successors, (28), 7 states have call predecessors, (28), 11 states have return successors, (27), 12 states have call predecessors, (27), 12 states have call successors, (27) [2021-12-28 03:22:01,556 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 348 transitions. [2021-12-28 03:22:01,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-12-28 03:22:01,557 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:01,557 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:01,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:01,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-28 03:22:01,763 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:01,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:01,764 INFO L85 PathProgramCache]: Analyzing trace with hash 371606800, now seen corresponding path program 1 times [2021-12-28 03:22:01,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:01,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212739970] [2021-12-28 03:22:01,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:01,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:01,820 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:01,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5018154] [2021-12-28 03:22:01,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:01,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:01,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:01,822 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:22:01,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-28 03:22:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:02,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 3063 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-28 03:22:02,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:02,477 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-28 03:22:02,877 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 109 proven. 12 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-12-28 03:22:02,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:22:03,581 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 41 proven. 13 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-28 03:22:03,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:03,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212739970] [2021-12-28 03:22:03,582 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:03,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5018154] [2021-12-28 03:22:03,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5018154] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:22:03,582 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:22:03,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 26 [2021-12-28 03:22:03,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39936583] [2021-12-28 03:22:03,583 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:22:03,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-28 03:22:03,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:03,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-28 03:22:03,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2021-12-28 03:22:03,584 INFO L87 Difference]: Start difference. First operand 274 states and 348 transitions. Second operand has 26 states, 21 states have (on average 6.428571428571429) internal successors, (135), 19 states have internal predecessors, (135), 7 states have call successors, (34), 3 states have call predecessors, (34), 8 states have return successors, (36), 9 states have call predecessors, (36), 6 states have call successors, (36) [2021-12-28 03:22:04,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:04,117 INFO L93 Difference]: Finished difference Result 484 states and 619 transitions. [2021-12-28 03:22:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-28 03:22:04,118 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 6.428571428571429) internal successors, (135), 19 states have internal predecessors, (135), 7 states have call successors, (34), 3 states have call predecessors, (34), 8 states have return successors, (36), 9 states have call predecessors, (36), 6 states have call successors, (36) Word has length 221 [2021-12-28 03:22:04,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:04,120 INFO L225 Difference]: With dead ends: 484 [2021-12-28 03:22:04,120 INFO L226 Difference]: Without dead ends: 306 [2021-12-28 03:22:04,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 415 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=852, Unknown=0, NotChecked=0, Total=930 [2021-12-28 03:22:04,121 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 33 mSDsluCounter, 3915 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 4118 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:04,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 4118 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 03:22:04,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-12-28 03:22:04,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 290. [2021-12-28 03:22:04,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 209 states have (on average 1.1483253588516746) internal successors, (240), 215 states have internal predecessors, (240), 50 states have call successors, (50), 22 states have call predecessors, (50), 30 states have return successors, (79), 52 states have call predecessors, (79), 49 states have call successors, (79) [2021-12-28 03:22:04,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 369 transitions. [2021-12-28 03:22:04,133 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 369 transitions. Word has length 221 [2021-12-28 03:22:04,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:04,133 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 369 transitions. [2021-12-28 03:22:04,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 6.428571428571429) internal successors, (135), 19 states have internal predecessors, (135), 7 states have call successors, (34), 3 states have call predecessors, (34), 8 states have return successors, (36), 9 states have call predecessors, (36), 6 states have call successors, (36) [2021-12-28 03:22:04,134 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 369 transitions. [2021-12-28 03:22:04,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-28 03:22:04,135 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:04,135 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:04,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:04,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:04,356 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:04,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:04,356 INFO L85 PathProgramCache]: Analyzing trace with hash -154708220, now seen corresponding path program 1 times [2021-12-28 03:22:04,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:04,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913207862] [2021-12-28 03:22:04,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:04,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:04,402 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:04,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813248072] [2021-12-28 03:22:04,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:04,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:04,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:04,404 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:22:04,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-28 03:22:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:05,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 3055 conjuncts, 164 conjunts are in the unsatisfiable core [2021-12-28 03:22:05,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:05,047 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-28 03:22:05,327 INFO L353 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-28 03:22:05,327 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22