./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_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 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 22:29:50,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:29:50,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:29:50,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:29:50,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:29:50,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:29:50,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:29:50,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:29:50,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:29:50,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:29:50,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:29:50,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:29:50,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:29:50,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:29:50,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:29:50,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:29:50,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:29:50,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:29:50,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:29:50,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:29:50,563 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:29:50,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:29:50,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:29:50,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:29:50,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:29:50,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:29:50,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:29:50,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:29:50,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:29:50,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:29:50,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:29:50,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:29:50,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:29:50,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:29:50,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:29:50,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:29:50,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:29:50,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:29:50,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:29:50,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:29:50,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:29:50,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:29:50,588 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 22:29:50,617 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:29:50,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:29:50,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:29:50,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:29:50,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:29:50,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:29:50,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:29:50,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:29:50,620 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:29:50,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:29:50,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 22:29:50,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:29:50,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:29:50,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:29:50,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:29:50,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:29:50,622 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:29:50,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:29:50,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:29:50,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:29:50,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:29:50,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:29:50,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:29:50,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:29:50,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:29:50,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 22:29:50,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 22:29:50,624 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:29:50,624 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:29:50,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:29:50,625 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac [2022-07-22 22:29:50,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:29:50,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:29:50,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:29:50,934 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:29:50,934 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:29:50,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2022-07-22 22:29:50,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3bf9d70a/c5fade65ddc449d1be57fa551317ad70/FLAGe65feec2f [2022-07-22 22:29:51,703 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:29:51,723 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2022-07-22 22:29:51,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3bf9d70a/c5fade65ddc449d1be57fa551317ad70/FLAGe65feec2f [2022-07-22 22:29:51,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3bf9d70a/c5fade65ddc449d1be57fa551317ad70 [2022-07-22 22:29:51,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:29:51,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:29:51,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:29:51,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:29:51,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:29:51,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:29:51" (1/1) ... [2022-07-22 22:29:51,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f74b770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:51, skipping insertion in model container [2022-07-22 22:29:51,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:29:51" (1/1) ... [2022-07-22 22:29:51,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:29:51,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:29:52,178 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_pop_harness.i[4496,4509] [2022-07-22 22:29:52,186 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_pop_harness.i[4556,4569] [2022-07-22 22:29:52,805 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:52,809 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:52,810 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:52,811 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:52,813 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:52,832 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:52,833 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:52,834 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:52,837 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:52,839 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:52,841 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:52,841 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:52,841 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,112 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:29:53,114 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:29:53,116 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:29:53,117 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:29:53,118 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:29:53,119 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:29:53,119 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:29:53,120 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:29:53,127 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:29:53,129 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:29:53,250 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:29:53,289 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,294 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,348 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,349 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,349 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,349 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,350 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,350 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,351 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,351 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,351 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,352 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,352 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,352 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,352 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,355 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,356 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,356 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,356 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,359 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,360 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,365 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,366 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,366 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:29:53,428 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 22:29:53,451 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_pop_harness.i[4496,4509] [2022-07-22 22:29:53,453 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_pop_harness.i[4556,4569] [2022-07-22 22:29:53,490 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,498 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,498 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,499 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,500 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,510 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,511 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,512 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,512 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,513 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,513 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,513 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,513 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,557 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:29:53,558 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:29:53,558 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:29:53,559 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:29:53,559 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:29:53,560 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:29:53,561 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:29:53,561 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:29:53,562 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:29:53,562 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:29:53,586 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:29:53,604 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,610 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,640 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,641 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,641 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,641 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,642 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,642 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,643 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,643 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,643 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,644 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,644 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,645 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,645 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,646 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,647 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,647 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,648 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,649 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,650 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,661 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,662 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,662 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:29:53,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:29:53,865 INFO L208 MainTranslator]: Completed translation [2022-07-22 22:29:53,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:53 WrapperNode [2022-07-22 22:29:53,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 22:29:53,867 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 22:29:53,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 22:29:53,868 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 22:29:53,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:53" (1/1) ... [2022-07-22 22:29:53,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:53" (1/1) ... [2022-07-22 22:29:54,084 INFO L137 Inliner]: procedures = 697, calls = 1918, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1033 [2022-07-22 22:29:54,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 22:29:54,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 22:29:54,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 22:29:54,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 22:29:54,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:53" (1/1) ... [2022-07-22 22:29:54,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:53" (1/1) ... [2022-07-22 22:29:54,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:53" (1/1) ... [2022-07-22 22:29:54,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:53" (1/1) ... [2022-07-22 22:29:54,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:53" (1/1) ... [2022-07-22 22:29:54,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:53" (1/1) ... [2022-07-22 22:29:54,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:53" (1/1) ... [2022-07-22 22:29:54,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 22:29:54,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 22:29:54,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 22:29:54,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 22:29:54,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:53" (1/1) ... [2022-07-22 22:29:54,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:29:54,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:29:54,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 22:29:54,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 22:29:54,306 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-07-22 22:29:54,306 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-07-22 22:29:54,307 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-07-22 22:29:54,307 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-07-22 22:29:54,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 22:29:54,307 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-22 22:29:54,307 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-22 22:29:54,308 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-22 22:29:54,308 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-22 22:29:54,308 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-22 22:29:54,308 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-22 22:29:54,308 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2022-07-22 22:29:54,309 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2022-07-22 22:29:54,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-22 22:29:54,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 22:29:54,309 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-22 22:29:54,309 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-22 22:29:54,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 22:29:54,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 22:29:54,310 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2022-07-22 22:29:54,311 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2022-07-22 22:29:54,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 22:29:54,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 22:29:54,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 22:29:54,314 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2022-07-22 22:29:54,314 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2022-07-22 22:29:54,315 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-22 22:29:54,315 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-22 22:29:54,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 22:29:54,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 22:29:54,320 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-22 22:29:54,320 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-22 22:29:54,320 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-22 22:29:54,320 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-22 22:29:54,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-22 22:29:54,321 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-22 22:29:54,321 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-22 22:29:54,321 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-07-22 22:29:54,322 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-07-22 22:29:54,322 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-07-22 22:29:54,322 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-07-22 22:29:54,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-22 22:29:54,322 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-22 22:29:54,322 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 22:29:54,323 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 22:29:54,323 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-22 22:29:54,323 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-22 22:29:54,323 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2022-07-22 22:29:54,323 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2022-07-22 22:29:54,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 22:29:54,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 22:29:54,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 22:29:54,324 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-07-22 22:29:54,324 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-07-22 22:29:54,324 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-22 22:29:54,324 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-22 22:29:54,324 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-22 22:29:54,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-22 22:29:54,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 22:29:54,325 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-22 22:29:54,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-22 22:29:54,325 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-07-22 22:29:54,325 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-07-22 22:29:54,325 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-22 22:29:54,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-22 22:29:54,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 22:29:54,326 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2022-07-22 22:29:54,326 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2022-07-22 22:29:54,673 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 22:29:54,677 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 22:29:56,774 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 22:29:56,784 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 22:29:56,785 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-22 22:29:56,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:29:56 BoogieIcfgContainer [2022-07-22 22:29:56,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 22:29:56,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 22:29:56,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 22:29:56,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 22:29:56,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:29:51" (1/3) ... [2022-07-22 22:29:56,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3310369c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:29:56, skipping insertion in model container [2022-07-22 22:29:56,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:29:53" (2/3) ... [2022-07-22 22:29:56,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3310369c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:29:56, skipping insertion in model container [2022-07-22 22:29:56,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:29:56" (3/3) ... [2022-07-22 22:29:56,797 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_pop_harness.i [2022-07-22 22:29:56,810 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 22:29:56,810 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 22:29:56,877 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 22:29:56,887 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6865c249, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@64e65f14 [2022-07-22 22:29:56,887 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 22:29:56,893 INFO L276 IsEmpty]: Start isEmpty. Operand has 448 states, 263 states have (on average 1.2623574144486691) internal successors, (332), 266 states have internal predecessors, (332), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2022-07-22 22:29:56,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-22 22:29:56,908 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:29:56,909 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-07-22 22:29:56,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:29:56,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:29:56,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1140837343, now seen corresponding path program 1 times [2022-07-22 22:29:56,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:29:56,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599554204] [2022-07-22 22:29:56,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:29:56,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:29:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:57,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:29:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:57,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:29:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:57,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:29:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:57,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 22:29:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:57,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:29:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:57,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:29:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:57,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 22:29:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:57,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:29:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:57,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:29:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:57,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:29:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:57,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:29:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:57,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 22:29:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:57,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:29:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:57,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 22:29:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:57,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 22:29:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:57,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 22:29:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:57,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 22:29:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:57,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 22:29:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:57,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 22:29:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:57,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 22:29:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:57,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 22:29:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:29:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-07-22 22:29:57,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:29:57,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599554204] [2022-07-22 22:29:57,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599554204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:29:57,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:29:57,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:29:57,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737811878] [2022-07-22 22:29:57,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:29:57,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:29:57,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:29:57,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:29:57,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:29:57,800 INFO L87 Difference]: Start difference. First operand has 448 states, 263 states have (on average 1.2623574144486691) internal successors, (332), 266 states have internal predecessors, (332), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-22 22:29:59,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:29:59,655 INFO L93 Difference]: Finished difference Result 1063 states and 1806 transitions. [2022-07-22 22:29:59,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:29:59,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 133 [2022-07-22 22:29:59,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:29:59,688 INFO L225 Difference]: With dead ends: 1063 [2022-07-22 22:29:59,689 INFO L226 Difference]: Without dead ends: 621 [2022-07-22 22:29:59,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:29:59,701 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 465 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 22:29:59,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 958 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 22:29:59,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-07-22 22:29:59,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 441. [2022-07-22 22:29:59,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 257 states have (on average 1.2373540856031129) internal successors, (318), 260 states have internal predecessors, (318), 156 states have call successors, (156), 27 states have call predecessors, (156), 26 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2022-07-22 22:29:59,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 628 transitions. [2022-07-22 22:29:59,823 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 628 transitions. Word has length 133 [2022-07-22 22:29:59,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:29:59,824 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 628 transitions. [2022-07-22 22:29:59,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-22 22:29:59,825 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 628 transitions. [2022-07-22 22:29:59,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-22 22:29:59,833 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:29:59,833 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-07-22 22:29:59,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 22:29:59,834 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:29:59,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:29:59,834 INFO L85 PathProgramCache]: Analyzing trace with hash 826891299, now seen corresponding path program 1 times [2022-07-22 22:29:59,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:29:59,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723925113] [2022-07-22 22:29:59,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:29:59,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:29:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:00,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:30:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:00,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:30:00,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:00,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:30:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:00,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 22:30:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:00,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:30:00,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:00,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:30:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:00,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 22:30:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:00,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:30:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:00,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:30:00,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:00,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:30:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:00,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:30:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:00,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 22:30:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:00,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:30:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:00,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 22:30:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:00,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 22:30:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:00,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 22:30:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:00,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 22:30:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:00,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 22:30:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:00,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 22:30:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:00,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 22:30:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:00,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 22:30:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:00,390 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-07-22 22:30:00,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:30:00,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723925113] [2022-07-22 22:30:00,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723925113] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:30:00,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95956146] [2022-07-22 22:30:00,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:00,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:30:00,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:30:00,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:30:00,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 22:30:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:00,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 2444 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 22:30:00,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:30:01,059 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-22 22:30:01,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:30:01,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95956146] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:30:01,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:30:01,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-22 22:30:01,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704372483] [2022-07-22 22:30:01,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:30:01,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:30:01,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:30:01,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:30:01,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-22 22:30:01,063 INFO L87 Difference]: Start difference. First operand 441 states and 628 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 22:30:02,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:30:02,090 INFO L93 Difference]: Finished difference Result 848 states and 1225 transitions. [2022-07-22 22:30:02,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:30:02,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 133 [2022-07-22 22:30:02,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:30:02,095 INFO L225 Difference]: With dead ends: 848 [2022-07-22 22:30:02,095 INFO L226 Difference]: Without dead ends: 443 [2022-07-22 22:30:02,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:30:02,098 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 643 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 22:30:02,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 2189 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 22:30:02,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-07-22 22:30:02,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2022-07-22 22:30:02,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 258 states have (on average 1.2364341085271318) internal successors, (319), 262 states have internal predecessors, (319), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (167), 154 states have call predecessors, (167), 154 states have call successors, (167) [2022-07-22 22:30:02,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 642 transitions. [2022-07-22 22:30:02,132 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 642 transitions. Word has length 133 [2022-07-22 22:30:02,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:30:02,133 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 642 transitions. [2022-07-22 22:30:02,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 22:30:02,134 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 642 transitions. [2022-07-22 22:30:02,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-22 22:30:02,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:30:02,135 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 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] [2022-07-22 22:30:02,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 22:30:02,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:30:02,352 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:30:02,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:30:02,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1886231881, now seen corresponding path program 1 times [2022-07-22 22:30:02,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:30:02,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216622691] [2022-07-22 22:30:02,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:02,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:30:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:02,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:30:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:02,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:30:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:02,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:30:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:02,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 22:30:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:02,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:30:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:02,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:30:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:02,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 22:30:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:02,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:30:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:02,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:30:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:02,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:30:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:02,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:30:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:02,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 22:30:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:02,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 22:30:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:02,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:30:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:02,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:30:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:02,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 22:30:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:02,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 22:30:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:02,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:30:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:02,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 22:30:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:02,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 22:30:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:02,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 22:30:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:02,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 22:30:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-07-22 22:30:02,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:30:02,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216622691] [2022-07-22 22:30:02,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216622691] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:30:02,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877542905] [2022-07-22 22:30:02,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:02,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:30:02,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:30:02,841 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:30:02,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 22:30:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:03,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 2494 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 22:30:03,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:30:03,521 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-22 22:30:03,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:30:03,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877542905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:30:03,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:30:03,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-07-22 22:30:03,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042370157] [2022-07-22 22:30:03,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:30:03,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:30:03,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:30:03,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:30:03,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-07-22 22:30:03,524 INFO L87 Difference]: Start difference. First operand 443 states and 642 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-22 22:30:05,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:30:05,999 INFO L93 Difference]: Finished difference Result 871 states and 1296 transitions. [2022-07-22 22:30:06,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:30:06,000 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 141 [2022-07-22 22:30:06,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:30:06,004 INFO L225 Difference]: With dead ends: 871 [2022-07-22 22:30:06,004 INFO L226 Difference]: Without dead ends: 464 [2022-07-22 22:30:06,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-07-22 22:30:06,008 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 667 mSDsluCounter, 2664 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 3229 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:30:06,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 3229 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 22:30:06,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-07-22 22:30:06,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 462. [2022-07-22 22:30:06,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 274 states have (on average 1.2445255474452555) internal successors, (341), 278 states have internal predecessors, (341), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2022-07-22 22:30:06,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 685 transitions. [2022-07-22 22:30:06,039 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 685 transitions. Word has length 141 [2022-07-22 22:30:06,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:30:06,039 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 685 transitions. [2022-07-22 22:30:06,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-22 22:30:06,040 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 685 transitions. [2022-07-22 22:30:06,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 22:30:06,042 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:30:06,042 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:30:06,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 22:30:06,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-22 22:30:06,268 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:30:06,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:30:06,269 INFO L85 PathProgramCache]: Analyzing trace with hash -523305437, now seen corresponding path program 1 times [2022-07-22 22:30:06,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:30:06,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625750884] [2022-07-22 22:30:06,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:06,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:30:06,368 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:30:06,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [492285426] [2022-07-22 22:30:06,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:06,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:30:06,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:30:06,370 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:30:06,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 22:30:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:06,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 2635 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 22:30:06,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:30:07,010 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-22 22:30:07,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:30:07,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:30:07,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625750884] [2022-07-22 22:30:07,011 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:30:07,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492285426] [2022-07-22 22:30:07,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492285426] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:30:07,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:30:07,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 22:30:07,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585525668] [2022-07-22 22:30:07,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:30:07,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:30:07,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:30:07,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:30:07,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:30:07,013 INFO L87 Difference]: Start difference. First operand 462 states and 685 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-22 22:30:09,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:30:09,024 INFO L93 Difference]: Finished difference Result 896 states and 1369 transitions. [2022-07-22 22:30:09,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:30:09,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 156 [2022-07-22 22:30:09,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:30:09,030 INFO L225 Difference]: With dead ends: 896 [2022-07-22 22:30:09,030 INFO L226 Difference]: Without dead ends: 470 [2022-07-22 22:30:09,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-07-22 22:30:09,037 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 667 mSDsluCounter, 2131 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 22:30:09,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 2693 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 22:30:09,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-07-22 22:30:09,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 462. [2022-07-22 22:30:09,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 274 states have (on average 1.2445255474452555) internal successors, (341), 278 states have internal predecessors, (341), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2022-07-22 22:30:09,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 685 transitions. [2022-07-22 22:30:09,085 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 685 transitions. Word has length 156 [2022-07-22 22:30:09,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:30:09,086 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 685 transitions. [2022-07-22 22:30:09,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-22 22:30:09,086 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 685 transitions. [2022-07-22 22:30:09,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-22 22:30:09,089 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:30:09,089 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:30:09,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 22:30:09,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:30:09,316 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:30:09,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:30:09,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1664024204, now seen corresponding path program 1 times [2022-07-22 22:30:09,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:30:09,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932567766] [2022-07-22 22:30:09,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:09,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:30:09,405 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:30:09,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930124291] [2022-07-22 22:30:09,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:09,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:30:09,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:30:09,408 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:30:09,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 22:30:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:09,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 2707 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 22:30:09,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:30:10,057 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-22 22:30:10,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:30:10,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:30:10,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932567766] [2022-07-22 22:30:10,058 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:30:10,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930124291] [2022-07-22 22:30:10,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930124291] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:30:10,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:30:10,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 22:30:10,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905440604] [2022-07-22 22:30:10,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:30:10,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:30:10,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:30:10,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:30:10,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:30:10,060 INFO L87 Difference]: Start difference. First operand 462 states and 685 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-22 22:30:13,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:30:13,373 INFO L93 Difference]: Finished difference Result 906 states and 1373 transitions. [2022-07-22 22:30:13,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:30:13,374 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 172 [2022-07-22 22:30:13,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:30:13,378 INFO L225 Difference]: With dead ends: 906 [2022-07-22 22:30:13,379 INFO L226 Difference]: Without dead ends: 480 [2022-07-22 22:30:13,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:30:13,382 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 732 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:30:13,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 3624 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-22 22:30:13,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-07-22 22:30:13,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 462. [2022-07-22 22:30:13,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 274 states have (on average 1.2445255474452555) internal successors, (341), 278 states have internal predecessors, (341), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2022-07-22 22:30:13,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 685 transitions. [2022-07-22 22:30:13,408 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 685 transitions. Word has length 172 [2022-07-22 22:30:13,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:30:13,409 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 685 transitions. [2022-07-22 22:30:13,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-22 22:30:13,409 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 685 transitions. [2022-07-22 22:30:13,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-22 22:30:13,412 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:30:13,413 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:30:13,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 22:30:13,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:30:13,627 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:30:13,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:30:13,628 INFO L85 PathProgramCache]: Analyzing trace with hash -294824304, now seen corresponding path program 2 times [2022-07-22 22:30:13,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:30:13,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805810750] [2022-07-22 22:30:13,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:13,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:30:13,715 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:30:13,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1983407360] [2022-07-22 22:30:13,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:30:13,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:30:13,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:30:13,718 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:30:13,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 22:30:14,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:30:14,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:30:14,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 2848 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 22:30:14,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:30:14,484 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-22 22:30:14,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:30:14,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:30:14,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805810750] [2022-07-22 22:30:14,485 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:30:14,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983407360] [2022-07-22 22:30:14,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983407360] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:30:14,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:30:14,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 22:30:14,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586640318] [2022-07-22 22:30:14,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:30:14,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:30:14,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:30:14,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:30:14,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:30:14,491 INFO L87 Difference]: Start difference. First operand 462 states and 685 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-22 22:30:17,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:30:17,301 INFO L93 Difference]: Finished difference Result 858 states and 1293 transitions. [2022-07-22 22:30:17,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:30:17,302 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 187 [2022-07-22 22:30:17,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:30:17,306 INFO L225 Difference]: With dead ends: 858 [2022-07-22 22:30:17,306 INFO L226 Difference]: Without dead ends: 464 [2022-07-22 22:30:17,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:30:17,309 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 655 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-22 22:30:17,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 2725 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-22 22:30:17,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-07-22 22:30:17,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2022-07-22 22:30:17,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 275 states have (on average 1.2436363636363637) internal successors, (342), 280 states have internal predecessors, (342), 158 states have call successors, (158), 27 states have call predecessors, (158), 29 states have return successors, (197), 157 states have call predecessors, (197), 156 states have call successors, (197) [2022-07-22 22:30:17,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 697 transitions. [2022-07-22 22:30:17,334 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 697 transitions. Word has length 187 [2022-07-22 22:30:17,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:30:17,334 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 697 transitions. [2022-07-22 22:30:17,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-22 22:30:17,335 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 697 transitions. [2022-07-22 22:30:17,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-07-22 22:30:17,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:30:17,337 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:30:17,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-22 22:30:17,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:30:17,553 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:30:17,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:30:17,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1770519646, now seen corresponding path program 1 times [2022-07-22 22:30:17,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:30:17,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454105799] [2022-07-22 22:30:17,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:17,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:30:17,645 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:30:17,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1688720712] [2022-07-22 22:30:17,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:17,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:30:17,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:30:17,648 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:30:17,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 22:30:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:18,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 3039 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 22:30:18,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:30:18,346 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-07-22 22:30:18,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:30:18,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:30:18,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454105799] [2022-07-22 22:30:18,347 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:30:18,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688720712] [2022-07-22 22:30:18,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688720712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:30:18,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:30:18,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 22:30:18,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079539300] [2022-07-22 22:30:18,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:30:18,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:30:18,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:30:18,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:30:18,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:30:18,349 INFO L87 Difference]: Start difference. First operand 464 states and 697 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2022-07-22 22:30:19,591 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 22:30:21,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:30:21,592 INFO L93 Difference]: Finished difference Result 863 states and 1318 transitions. [2022-07-22 22:30:21,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:30:21,596 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) Word has length 210 [2022-07-22 22:30:21,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:30:21,600 INFO L225 Difference]: With dead ends: 863 [2022-07-22 22:30:21,600 INFO L226 Difference]: Without dead ends: 467 [2022-07-22 22:30:21,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-07-22 22:30:21,603 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 679 mSDsluCounter, 2657 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 3218 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:30:21,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 3218 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-22 22:30:21,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-07-22 22:30:21,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 465. [2022-07-22 22:30:21,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 276 states have (on average 1.2427536231884058) internal successors, (343), 281 states have internal predecessors, (343), 158 states have call successors, (158), 27 states have call predecessors, (158), 29 states have return successors, (197), 157 states have call predecessors, (197), 156 states have call successors, (197) [2022-07-22 22:30:21,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 698 transitions. [2022-07-22 22:30:21,628 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 698 transitions. Word has length 210 [2022-07-22 22:30:21,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:30:21,628 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 698 transitions. [2022-07-22 22:30:21,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2022-07-22 22:30:21,629 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 698 transitions. [2022-07-22 22:30:21,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-07-22 22:30:21,631 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:30:21,631 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:30:21,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 22:30:21,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:30:21,848 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:30:21,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:30:21,848 INFO L85 PathProgramCache]: Analyzing trace with hash -236319775, now seen corresponding path program 1 times [2022-07-22 22:30:21,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:30:21,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857295497] [2022-07-22 22:30:21,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:21,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:30:21,925 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:30:21,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030425109] [2022-07-22 22:30:21,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:21,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:30:21,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:30:21,928 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:30:21,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 22:30:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:22,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 22:30:22,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:30:22,664 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 137 proven. 3 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-22 22:30:22,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:30:23,007 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-07-22 22:30:23,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:30:23,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857295497] [2022-07-22 22:30:23,008 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:30:23,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030425109] [2022-07-22 22:30:23,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030425109] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:30:23,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:30:23,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-07-22 22:30:23,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294516670] [2022-07-22 22:30:23,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:30:23,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 22:30:23,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:30:23,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 22:30:23,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-22 22:30:23,010 INFO L87 Difference]: Start difference. First operand 465 states and 698 transitions. Second operand has 14 states, 12 states have (on average 9.916666666666666) internal successors, (119), 14 states have internal predecessors, (119), 9 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (42), 5 states have call predecessors, (42), 9 states have call successors, (42) [2022-07-22 22:30:28,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:30:28,307 INFO L93 Difference]: Finished difference Result 881 states and 1352 transitions. [2022-07-22 22:30:28,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:30:28,307 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 9.916666666666666) internal successors, (119), 14 states have internal predecessors, (119), 9 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (42), 5 states have call predecessors, (42), 9 states have call successors, (42) Word has length 211 [2022-07-22 22:30:28,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:30:28,311 INFO L225 Difference]: With dead ends: 881 [2022-07-22 22:30:28,311 INFO L226 Difference]: Without dead ends: 484 [2022-07-22 22:30:28,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:30:28,314 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 1085 mSDsluCounter, 4137 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 4683 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:30:28,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 4683 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-22 22:30:28,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-07-22 22:30:28,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 478. [2022-07-22 22:30:28,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 288 states have (on average 1.25) internal successors, (360), 292 states have internal predecessors, (360), 159 states have call successors, (159), 27 states have call predecessors, (159), 29 states have return successors, (198), 159 states have call predecessors, (198), 157 states have call successors, (198) [2022-07-22 22:30:28,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 717 transitions. [2022-07-22 22:30:28,337 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 717 transitions. Word has length 211 [2022-07-22 22:30:28,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:30:28,337 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 717 transitions. [2022-07-22 22:30:28,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 9.916666666666666) internal successors, (119), 14 states have internal predecessors, (119), 9 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (42), 5 states have call predecessors, (42), 9 states have call successors, (42) [2022-07-22 22:30:28,338 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 717 transitions. [2022-07-22 22:30:28,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-22 22:30:28,340 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:30:28,340 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:30:28,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 22:30:28,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:30:28,556 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:30:28,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:30:28,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1051846891, now seen corresponding path program 2 times [2022-07-22 22:30:28,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:30:28,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592727959] [2022-07-22 22:30:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:28,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:30:28,649 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:30:28,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430679069] [2022-07-22 22:30:28,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:30:28,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:30:28,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:30:28,651 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:30:28,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 22:30:29,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:30:29,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:30:29,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 3111 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-22 22:30:29,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:30:29,801 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-22 22:30:29,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:30:29,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:30:29,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592727959] [2022-07-22 22:30:29,802 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:30:29,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430679069] [2022-07-22 22:30:29,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430679069] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:30:29,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:30:29,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 22:30:29,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096773263] [2022-07-22 22:30:29,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:30:29,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 22:30:29,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:30:29,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 22:30:29,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 22:30:29,805 INFO L87 Difference]: Start difference. First operand 478 states and 717 transitions. Second operand has 10 states, 9 states have (on average 11.11111111111111) internal successors, (100), 10 states have internal predecessors, (100), 6 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2022-07-22 22:30:32,095 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 22:30:33,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:30:33,533 INFO L93 Difference]: Finished difference Result 890 states and 1355 transitions. [2022-07-22 22:30:33,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 22:30:33,534 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.11111111111111) internal successors, (100), 10 states have internal predecessors, (100), 6 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) Word has length 226 [2022-07-22 22:30:33,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:30:33,538 INFO L225 Difference]: With dead ends: 890 [2022-07-22 22:30:33,538 INFO L226 Difference]: Without dead ends: 480 [2022-07-22 22:30:33,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:30:33,541 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 744 mSDsluCounter, 3578 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 4118 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-22 22:30:33,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 4118 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-22 22:30:33,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-07-22 22:30:33,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 462. [2022-07-22 22:30:33,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 274 states have (on average 1.2445255474452555) internal successors, (341), 278 states have internal predecessors, (341), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (184), 157 states have call predecessors, (184), 156 states have call successors, (184) [2022-07-22 22:30:33,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 683 transitions. [2022-07-22 22:30:33,563 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 683 transitions. Word has length 226 [2022-07-22 22:30:33,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:30:33,564 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 683 transitions. [2022-07-22 22:30:33,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.11111111111111) internal successors, (100), 10 states have internal predecessors, (100), 6 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2022-07-22 22:30:33,564 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 683 transitions. [2022-07-22 22:30:33,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-22 22:30:33,567 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:30:33,567 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 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, 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] [2022-07-22 22:30:33,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 22:30:33,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-22 22:30:33,783 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:30:33,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:30:33,784 INFO L85 PathProgramCache]: Analyzing trace with hash 664794371, now seen corresponding path program 3 times [2022-07-22 22:30:33,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:30:33,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698338031] [2022-07-22 22:30:33,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:33,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:30:33,856 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:30:33,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1283508292] [2022-07-22 22:30:33,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 22:30:33,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:30:33,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:30:33,859 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:30:33,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 22:30:34,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-22 22:30:34,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:30:34,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 1889 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 22:30:34,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:30:34,793 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-07-22 22:30:34,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:30:34,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:30:34,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698338031] [2022-07-22 22:30:34,794 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:30:34,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283508292] [2022-07-22 22:30:34,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283508292] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:30:34,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:30:34,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 22:30:34,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734746188] [2022-07-22 22:30:34,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:30:34,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:30:34,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:30:34,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:30:34,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:30:34,796 INFO L87 Difference]: Start difference. First operand 462 states and 683 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-22 22:30:35,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:30:35,061 INFO L93 Difference]: Finished difference Result 851 states and 1291 transitions. [2022-07-22 22:30:35,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:30:35,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 241 [2022-07-22 22:30:35,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:30:35,066 INFO L225 Difference]: With dead ends: 851 [2022-07-22 22:30:35,066 INFO L226 Difference]: Without dead ends: 462 [2022-07-22 22:30:35,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:30:35,070 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 2 mSDsluCounter, 2267 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:30:35,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2858 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:30:35,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-07-22 22:30:35,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2022-07-22 22:30:35,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 274 states have (on average 1.2445255474452555) internal successors, (341), 278 states have internal predecessors, (341), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (183), 157 states have call predecessors, (183), 156 states have call successors, (183) [2022-07-22 22:30:35,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 682 transitions. [2022-07-22 22:30:35,092 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 682 transitions. Word has length 241 [2022-07-22 22:30:35,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:30:35,093 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 682 transitions. [2022-07-22 22:30:35,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-22 22:30:35,093 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 682 transitions. [2022-07-22 22:30:35,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-07-22 22:30:35,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:30:35,096 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2022-07-22 22:30:35,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 22:30:35,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-22 22:30:35,311 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:30:35,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:30:35,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1662762273, now seen corresponding path program 4 times [2022-07-22 22:30:35,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:30:35,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542376376] [2022-07-22 22:30:35,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:35,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:30:35,438 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:30:35,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1167785309] [2022-07-22 22:30:35,441 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 22:30:35,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:30:35,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:30:35,444 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:30:35,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 22:30:36,187 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 22:30:36,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:30:36,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 3393 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 22:30:36,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:30:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2022-07-22 22:30:36,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:30:36,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:30:36,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542376376] [2022-07-22 22:30:36,356 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:30:36,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167785309] [2022-07-22 22:30:36,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167785309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:30:36,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:30:36,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 22:30:36,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305100018] [2022-07-22 22:30:36,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:30:36,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:30:36,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:30:36,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:30:36,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:30:36,360 INFO L87 Difference]: Start difference. First operand 462 states and 682 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-22 22:30:39,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:30:39,061 INFO L93 Difference]: Finished difference Result 862 states and 1283 transitions. [2022-07-22 22:30:39,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:30:39,062 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 256 [2022-07-22 22:30:39,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:30:39,066 INFO L225 Difference]: With dead ends: 862 [2022-07-22 22:30:39,066 INFO L226 Difference]: Without dead ends: 474 [2022-07-22 22:30:39,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:30:39,069 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 64 mSDsluCounter, 3381 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 3972 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 22:30:39,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 3972 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 22:30:39,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-07-22 22:30:39,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 474. [2022-07-22 22:30:39,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 280 states have (on average 1.2428571428571429) internal successors, (348), 284 states have internal predecessors, (348), 163 states have call successors, (163), 28 states have call predecessors, (163), 29 states have return successors, (188), 162 states have call predecessors, (188), 161 states have call successors, (188) [2022-07-22 22:30:39,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 699 transitions. [2022-07-22 22:30:39,089 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 699 transitions. Word has length 256 [2022-07-22 22:30:39,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:30:39,090 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 699 transitions. [2022-07-22 22:30:39,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-22 22:30:39,090 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 699 transitions. [2022-07-22 22:30:39,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-22 22:30:39,092 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:30:39,092 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:30:39,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-07-22 22:30:39,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-22 22:30:39,307 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:30:39,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:30:39,308 INFO L85 PathProgramCache]: Analyzing trace with hash -350828385, now seen corresponding path program 1 times [2022-07-22 22:30:39,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:30:39,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051577385] [2022-07-22 22:30:39,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:39,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:30:39,396 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:30:39,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [844681346] [2022-07-22 22:30:39,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:39,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:30:39,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:30:39,398 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:30:39,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 22:30:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:40,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 3534 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 22:30:40,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:30:40,317 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2022-07-22 22:30:40,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:30:40,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:30:40,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051577385] [2022-07-22 22:30:40,318 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:30:40,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844681346] [2022-07-22 22:30:40,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844681346] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:30:40,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:30:40,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 22:30:40,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328367224] [2022-07-22 22:30:40,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:30:40,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:30:40,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:30:40,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:30:40,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:30:40,320 INFO L87 Difference]: Start difference. First operand 474 states and 699 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-22 22:30:41,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:30:41,656 INFO L93 Difference]: Finished difference Result 948 states and 1454 transitions. [2022-07-22 22:30:41,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:30:41,657 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 271 [2022-07-22 22:30:41,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:30:41,660 INFO L225 Difference]: With dead ends: 948 [2022-07-22 22:30:41,660 INFO L226 Difference]: Without dead ends: 510 [2022-07-22 22:30:41,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:30:41,664 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 21 mSDsluCounter, 2316 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2951 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:30:41,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2951 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 22:30:41,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-07-22 22:30:41,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 482. [2022-07-22 22:30:41,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 288 states have (on average 1.2430555555555556) internal successors, (358), 292 states have internal predecessors, (358), 163 states have call successors, (163), 28 states have call predecessors, (163), 29 states have return successors, (188), 162 states have call predecessors, (188), 161 states have call successors, (188) [2022-07-22 22:30:41,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 709 transitions. [2022-07-22 22:30:41,689 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 709 transitions. Word has length 271 [2022-07-22 22:30:41,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:30:41,689 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 709 transitions. [2022-07-22 22:30:41,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-22 22:30:41,690 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 709 transitions. [2022-07-22 22:30:41,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-22 22:30:41,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:30:41,691 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:30:41,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-22 22:30:41,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-22 22:30:41,907 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:30:41,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:30:41,908 INFO L85 PathProgramCache]: Analyzing trace with hash -899887649, now seen corresponding path program 1 times [2022-07-22 22:30:41,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:30:41,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923743653] [2022-07-22 22:30:41,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:41,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:30:41,990 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:30:41,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [979695932] [2022-07-22 22:30:41,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:41,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:30:41,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:30:41,992 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:30:41,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 22:30:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:42,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 3528 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:30:42,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:30:42,814 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-22 22:30:42,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:30:42,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:30:42,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923743653] [2022-07-22 22:30:42,815 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:30:42,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979695932] [2022-07-22 22:30:42,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979695932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:30:42,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:30:42,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 22:30:42,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356439602] [2022-07-22 22:30:42,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:30:42,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:30:42,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:30:42,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:30:42,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:30:42,818 INFO L87 Difference]: Start difference. First operand 482 states and 709 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-22 22:30:42,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:30:42,876 INFO L93 Difference]: Finished difference Result 936 states and 1412 transitions. [2022-07-22 22:30:42,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:30:42,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 271 [2022-07-22 22:30:42,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:30:42,881 INFO L225 Difference]: With dead ends: 936 [2022-07-22 22:30:42,881 INFO L226 Difference]: Without dead ends: 490 [2022-07-22 22:30:42,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:30:42,886 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 3 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:30:42,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1870 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:30:42,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-07-22 22:30:42,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 486. [2022-07-22 22:30:42,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 292 states have (on average 1.2397260273972603) internal successors, (362), 296 states have internal predecessors, (362), 163 states have call successors, (163), 28 states have call predecessors, (163), 29 states have return successors, (188), 162 states have call predecessors, (188), 161 states have call successors, (188) [2022-07-22 22:30:42,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 713 transitions. [2022-07-22 22:30:42,912 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 713 transitions. Word has length 271 [2022-07-22 22:30:42,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:30:42,913 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 713 transitions. [2022-07-22 22:30:42,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-22 22:30:42,913 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 713 transitions. [2022-07-22 22:30:42,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-22 22:30:42,915 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:30:42,915 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:30:42,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 22:30:43,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-22 22:30:43,131 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:30:43,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:30:43,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1910711071, now seen corresponding path program 1 times [2022-07-22 22:30:43,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:30:43,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182994421] [2022-07-22 22:30:43,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:43,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:30:43,211 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:30:43,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538522660] [2022-07-22 22:30:43,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:43,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:30:43,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:30:43,213 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) [2022-07-22 22:30:43,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 22:30:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:43,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 3518 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-22 22:30:43,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:30:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-07-22 22:30:44,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:30:44,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:30:44,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182994421] [2022-07-22 22:30:44,045 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:30:44,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538522660] [2022-07-22 22:30:44,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538522660] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:30:44,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:30:44,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 22:30:44,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227362504] [2022-07-22 22:30:44,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:30:44,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:30:44,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:30:44,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:30:44,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:30:44,047 INFO L87 Difference]: Start difference. First operand 486 states and 713 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-22 22:30:47,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:30:47,879 INFO L93 Difference]: Finished difference Result 943 states and 1400 transitions. [2022-07-22 22:30:47,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:30:47,880 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) Word has length 271 [2022-07-22 22:30:47,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:30:47,884 INFO L225 Difference]: With dead ends: 943 [2022-07-22 22:30:47,885 INFO L226 Difference]: Without dead ends: 528 [2022-07-22 22:30:47,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 22:30:47,889 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 42 mSDsluCounter, 3850 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 4503 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-22 22:30:47,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 4503 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-22 22:30:47,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-07-22 22:30:47,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 505. [2022-07-22 22:30:47,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 305 states have (on average 1.2426229508196722) internal successors, (379), 309 states have internal predecessors, (379), 168 states have call successors, (168), 28 states have call predecessors, (168), 30 states have return successors, (198), 168 states have call predecessors, (198), 166 states have call successors, (198) [2022-07-22 22:30:47,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 745 transitions. [2022-07-22 22:30:47,927 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 745 transitions. Word has length 271 [2022-07-22 22:30:47,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:30:47,929 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 745 transitions. [2022-07-22 22:30:47,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-22 22:30:47,930 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 745 transitions. [2022-07-22 22:30:47,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-22 22:30:47,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:30:47,932 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:30:47,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 22:30:48,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-22 22:30:48,147 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:30:48,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:30:48,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1178743645, now seen corresponding path program 1 times [2022-07-22 22:30:48,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:30:48,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056418771] [2022-07-22 22:30:48,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:48,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:30:48,229 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:30:48,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063870849] [2022-07-22 22:30:48,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:48,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:30:48,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:30:48,232 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) [2022-07-22 22:30:48,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 22:30:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:49,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 3515 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 22:30:49,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:30:49,184 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-07-22 22:30:49,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:30:49,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:30:49,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056418771] [2022-07-22 22:30:49,185 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:30:49,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063870849] [2022-07-22 22:30:49,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063870849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:30:49,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:30:49,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 22:30:49,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094869447] [2022-07-22 22:30:49,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:30:49,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:30:49,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:30:49,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:30:49,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:30:49,188 INFO L87 Difference]: Start difference. First operand 505 states and 745 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-22 22:30:49,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:30:49,481 INFO L93 Difference]: Finished difference Result 953 states and 1415 transitions. [2022-07-22 22:30:49,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:30:49,482 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 271 [2022-07-22 22:30:49,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:30:49,486 INFO L225 Difference]: With dead ends: 953 [2022-07-22 22:30:49,487 INFO L226 Difference]: Without dead ends: 532 [2022-07-22 22:30:49,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:30:49,491 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 31 mSDsluCounter, 2525 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 3174 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:30:49,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 3174 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:30:49,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-07-22 22:30:49,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 511. [2022-07-22 22:30:49,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 308 states have (on average 1.2370129870129871) internal successors, (381), 312 states have internal predecessors, (381), 171 states have call successors, (171), 28 states have call predecessors, (171), 30 states have return successors, (201), 171 states have call predecessors, (201), 169 states have call successors, (201) [2022-07-22 22:30:49,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 753 transitions. [2022-07-22 22:30:49,516 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 753 transitions. Word has length 271 [2022-07-22 22:30:49,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:30:49,516 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 753 transitions. [2022-07-22 22:30:49,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-22 22:30:49,516 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 753 transitions. [2022-07-22 22:30:49,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-22 22:30:49,518 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:30:49,518 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:30:49,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-22 22:30:49,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:30:49,731 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:30:49,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:30:49,732 INFO L85 PathProgramCache]: Analyzing trace with hash -957139557, now seen corresponding path program 1 times [2022-07-22 22:30:49,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:30:49,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867709848] [2022-07-22 22:30:49,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:49,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:30:49,838 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:30:49,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [604906199] [2022-07-22 22:30:49,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:49,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:30:49,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:30:49,841 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) [2022-07-22 22:30:49,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-22 22:30:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:50,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 3512 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-22 22:30:50,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:30:50,663 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-07-22 22:30:50,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:30:50,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:30:50,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867709848] [2022-07-22 22:30:50,664 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:30:50,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604906199] [2022-07-22 22:30:50,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604906199] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:30:50,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:30:50,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:30:50,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165869278] [2022-07-22 22:30:50,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:30:50,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:30:50,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:30:50,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:30:50,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:30:50,666 INFO L87 Difference]: Start difference. First operand 511 states and 753 transitions. Second operand has 5 states, 4 states have (on average 27.75) internal successors, (111), 5 states have internal predecessors, (111), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-22 22:30:51,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:30:51,582 INFO L93 Difference]: Finished difference Result 926 states and 1371 transitions. [2022-07-22 22:30:51,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:30:51,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 27.75) internal successors, (111), 5 states have internal predecessors, (111), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27) Word has length 271 [2022-07-22 22:30:51,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:30:51,587 INFO L225 Difference]: With dead ends: 926 [2022-07-22 22:30:51,587 INFO L226 Difference]: Without dead ends: 489 [2022-07-22 22:30:51,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:30:51,591 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 2 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 22:30:51,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2278 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 22:30:51,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-07-22 22:30:51,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2022-07-22 22:30:51,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 294 states have (on average 1.2312925170068028) internal successors, (362), 299 states have internal predecessors, (362), 163 states have call successors, (163), 28 states have call predecessors, (163), 30 states have return successors, (190), 162 states have call predecessors, (190), 161 states have call successors, (190) [2022-07-22 22:30:51,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 715 transitions. [2022-07-22 22:30:51,616 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 715 transitions. Word has length 271 [2022-07-22 22:30:51,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:30:51,616 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 715 transitions. [2022-07-22 22:30:51,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 27.75) internal successors, (111), 5 states have internal predecessors, (111), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-22 22:30:51,616 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 715 transitions. [2022-07-22 22:30:51,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-07-22 22:30:51,618 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:30:51,618 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2022-07-22 22:30:51,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-22 22:30:51,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-22 22:30:51,843 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:30:51,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:30:51,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1871546181, now seen corresponding path program 1 times [2022-07-22 22:30:51,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:30:51,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829397745] [2022-07-22 22:30:51,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:51,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:30:51,948 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:30:51,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946439428] [2022-07-22 22:30:51,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:30:51,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:30:51,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:30:51,951 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:30:51,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-22 22:30:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:30:52,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 3553 conjuncts, 105 conjunts are in the unsatisfiable core [2022-07-22 22:30:52,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:30:53,304 INFO L356 Elim1Store]: treesize reduction 72, result has 11.1 percent of original size [2022-07-22 22:30:53,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 95 [2022-07-22 22:30:53,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 22:30:53,326 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 138 [2022-07-22 22:30:53,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:30:53,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2022-07-22 22:30:53,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 110 [2022-07-22 22:30:54,111 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5441 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5441))) is different from true [2022-07-22 22:30:54,258 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5442 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5442) |c_#memory_int|)) is different from true [2022-07-22 22:30:54,569 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 378 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 17 not checked. [2022-07-22 22:30:54,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:30:55,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:30:55,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829397745] [2022-07-22 22:30:55,041 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:30:55,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946439428] [2022-07-22 22:30:55,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946439428] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:30:55,042 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:30:55,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2022-07-22 22:30:55,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698877566] [2022-07-22 22:30:55,042 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:30:55,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-22 22:30:55,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:30:55,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-22 22:30:55,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=692, Unknown=34, NotChecked=110, Total=930 [2022-07-22 22:30:55,044 INFO L87 Difference]: Start difference. First operand 489 states and 715 transitions. Second operand has 26 states, 25 states have (on average 5.96) internal successors, (149), 24 states have internal predecessors, (149), 14 states have call successors, (35), 5 states have call predecessors, (35), 9 states have return successors, (33), 14 states have call predecessors, (33), 14 states have call successors, (33) [2022-07-22 22:30:55,412 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5442 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5442) |c_#memory_int|)) (exists ((v_ArrVal_5441 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_5441)))) is different from true [2022-07-22 22:31:02,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:31:02,825 INFO L93 Difference]: Finished difference Result 1231 states and 1947 transitions. [2022-07-22 22:31:02,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-22 22:31:02,826 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 5.96) internal successors, (149), 24 states have internal predecessors, (149), 14 states have call successors, (35), 5 states have call predecessors, (35), 9 states have return successors, (33), 14 states have call predecessors, (33), 14 states have call successors, (33) Word has length 282 [2022-07-22 22:31:02,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:31:02,834 INFO L225 Difference]: With dead ends: 1231 [2022-07-22 22:31:02,835 INFO L226 Difference]: Without dead ends: 773 [2022-07-22 22:31:02,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 345 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=144, Invalid=1080, Unknown=48, NotChecked=210, Total=1482 [2022-07-22 22:31:02,840 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 315 mSDsluCounter, 4876 mSDsCounter, 0 mSdLazyCounter, 3308 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 5485 SdHoareTripleChecker+Invalid, 9763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 3308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6225 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:31:02,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 5485 Invalid, 9763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 3308 Invalid, 0 Unknown, 6225 Unchecked, 7.3s Time] [2022-07-22 22:31:02,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-07-22 22:31:02,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 574. [2022-07-22 22:31:02,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 361 states have (on average 1.2271468144044322) internal successors, (443), 367 states have internal predecessors, (443), 171 states have call successors, (171), 34 states have call predecessors, (171), 40 states have return successors, (255), 173 states have call predecessors, (255), 169 states have call successors, (255) [2022-07-22 22:31:02,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 869 transitions. [2022-07-22 22:31:02,882 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 869 transitions. Word has length 282 [2022-07-22 22:31:02,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:31:02,882 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 869 transitions. [2022-07-22 22:31:02,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 5.96) internal successors, (149), 24 states have internal predecessors, (149), 14 states have call successors, (35), 5 states have call predecessors, (35), 9 states have return successors, (33), 14 states have call predecessors, (33), 14 states have call successors, (33) [2022-07-22 22:31:02,883 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 869 transitions. [2022-07-22 22:31:02,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-07-22 22:31:02,885 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:31:02,885 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2022-07-22 22:31:02,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-22 22:31:03,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-22 22:31:03,099 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:31:03,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:31:03,100 INFO L85 PathProgramCache]: Analyzing trace with hash 320687671, now seen corresponding path program 1 times [2022-07-22 22:31:03,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:31:03,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945482891] [2022-07-22 22:31:03,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:03,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:31:03,212 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:31:03,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237121955] [2022-07-22 22:31:03,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:03,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:03,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:31:03,214 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:31:03,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-22 22:31:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:04,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 3543 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:31:04,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:31:04,085 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2022-07-22 22:31:04,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:31:04,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:31:04,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945482891] [2022-07-22 22:31:04,086 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:31:04,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237121955] [2022-07-22 22:31:04,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237121955] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:31:04,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:31:04,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 22:31:04,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016929153] [2022-07-22 22:31:04,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:31:04,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:31:04,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:31:04,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:31:04,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:31:04,088 INFO L87 Difference]: Start difference. First operand 574 states and 869 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-22 22:31:04,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:31:04,140 INFO L93 Difference]: Finished difference Result 1115 states and 1778 transitions. [2022-07-22 22:31:04,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:31:04,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 282 [2022-07-22 22:31:04,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:31:04,146 INFO L225 Difference]: With dead ends: 1115 [2022-07-22 22:31:04,147 INFO L226 Difference]: Without dead ends: 577 [2022-07-22 22:31:04,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:31:04,152 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 7 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:31:04,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1870 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:31:04,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-07-22 22:31:04,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 574. [2022-07-22 22:31:04,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 361 states have (on average 1.2243767313019391) internal successors, (442), 367 states have internal predecessors, (442), 171 states have call successors, (171), 34 states have call predecessors, (171), 40 states have return successors, (255), 173 states have call predecessors, (255), 169 states have call successors, (255) [2022-07-22 22:31:04,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 868 transitions. [2022-07-22 22:31:04,185 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 868 transitions. Word has length 282 [2022-07-22 22:31:04,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:31:04,185 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 868 transitions. [2022-07-22 22:31:04,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-22 22:31:04,185 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 868 transitions. [2022-07-22 22:31:04,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-07-22 22:31:04,187 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:31:04,188 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:31:04,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-22 22:31:04,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-22 22:31:04,404 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:31:04,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:31:04,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1464292757, now seen corresponding path program 1 times [2022-07-22 22:31:04,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:31:04,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642523583] [2022-07-22 22:31:04,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:04,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:31:04,502 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:31:04,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2069545242] [2022-07-22 22:31:04,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:04,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:04,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:31:04,505 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:31:04,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-22 22:31:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:05,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 3566 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 22:31:05,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:31:05,404 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-22 22:31:05,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:31:05,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:31:05,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642523583] [2022-07-22 22:31:05,404 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:31:05,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069545242] [2022-07-22 22:31:05,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069545242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:31:05,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:31:05,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:31:05,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552138114] [2022-07-22 22:31:05,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:31:05,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:31:05,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:31:05,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:31:05,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:31:05,406 INFO L87 Difference]: Start difference. First operand 574 states and 868 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-22 22:31:06,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:31:06,856 INFO L93 Difference]: Finished difference Result 1119 states and 1799 transitions. [2022-07-22 22:31:06,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:31:06,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 284 [2022-07-22 22:31:06,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:31:06,862 INFO L225 Difference]: With dead ends: 1119 [2022-07-22 22:31:06,862 INFO L226 Difference]: Without dead ends: 581 [2022-07-22 22:31:06,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:31:06,867 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 15 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:31:06,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2396 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 22:31:06,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-07-22 22:31:06,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 575. [2022-07-22 22:31:06,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 362 states have (on average 1.223756906077348) internal successors, (443), 368 states have internal predecessors, (443), 171 states have call successors, (171), 34 states have call predecessors, (171), 40 states have return successors, (255), 173 states have call predecessors, (255), 169 states have call successors, (255) [2022-07-22 22:31:06,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 869 transitions. [2022-07-22 22:31:06,898 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 869 transitions. Word has length 284 [2022-07-22 22:31:06,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:31:06,898 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 869 transitions. [2022-07-22 22:31:06,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-22 22:31:06,899 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 869 transitions. [2022-07-22 22:31:06,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-07-22 22:31:06,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:31:06,901 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:31:06,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-22 22:31:07,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:07,119 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:31:07,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:31:07,120 INFO L85 PathProgramCache]: Analyzing trace with hash 561372179, now seen corresponding path program 1 times [2022-07-22 22:31:07,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:31:07,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321702838] [2022-07-22 22:31:07,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:07,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:31:07,228 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:31:07,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1876024126] [2022-07-22 22:31:07,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:07,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:07,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:31:07,231 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:31:07,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-22 22:31:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:08,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 3561 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-22 22:31:08,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:31:08,110 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2022-07-22 22:31:08,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:31:08,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:31:08,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321702838] [2022-07-22 22:31:08,110 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:31:08,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876024126] [2022-07-22 22:31:08,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876024126] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:31:08,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:31:08,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:31:08,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649510295] [2022-07-22 22:31:08,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:31:08,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:31:08,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:31:08,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:31:08,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:31:08,112 INFO L87 Difference]: Start difference. First operand 575 states and 869 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-22 22:31:08,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:31:08,168 INFO L93 Difference]: Finished difference Result 1158 states and 1830 transitions. [2022-07-22 22:31:08,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:31:08,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 284 [2022-07-22 22:31:08,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:31:08,174 INFO L225 Difference]: With dead ends: 1158 [2022-07-22 22:31:08,174 INFO L226 Difference]: Without dead ends: 619 [2022-07-22 22:31:08,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:31:08,178 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 8 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:31:08,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2574 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:31:08,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-07-22 22:31:08,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 601. [2022-07-22 22:31:08,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 388 states have (on average 1.2242268041237114) internal successors, (475), 394 states have internal predecessors, (475), 171 states have call successors, (171), 34 states have call predecessors, (171), 40 states have return successors, (255), 173 states have call predecessors, (255), 169 states have call successors, (255) [2022-07-22 22:31:08,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 901 transitions. [2022-07-22 22:31:08,209 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 901 transitions. Word has length 284 [2022-07-22 22:31:08,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:31:08,210 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 901 transitions. [2022-07-22 22:31:08,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-22 22:31:08,210 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 901 transitions. [2022-07-22 22:31:08,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-07-22 22:31:08,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:31:08,212 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 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, 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] [2022-07-22 22:31:08,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-22 22:31:08,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:08,427 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:31:08,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:31:08,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1929397623, now seen corresponding path program 1 times [2022-07-22 22:31:08,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:31:08,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046375185] [2022-07-22 22:31:08,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:08,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:31:08,506 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:31:08,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1380172413] [2022-07-22 22:31:08,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:08,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:08,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:31:08,509 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:31:08,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-22 22:31:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:09,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 3568 conjuncts, 144 conjunts are in the unsatisfiable core [2022-07-22 22:31:09,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:31:09,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:31:09,749 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-22 22:31:09,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-07-22 22:31:09,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:31:09,756 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-22 22:31:11,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:31:11,827 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-22 22:31:11,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:31:11,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-22 22:31:13,990 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_7059 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7059) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_7060 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7060) |c_#memory_$Pointer$.base|))) is different from true [2022-07-22 22:31:14,260 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_7062 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7062))) (exists ((v_ArrVal_7061 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7061) |c_#memory_$Pointer$.offset|)))) is different from true [2022-07-22 22:31:14,870 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-07-22 22:31:15,068 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 264 proven. 20 refuted. 0 times theorem prover too weak. 219 trivial. 3 not checked. [2022-07-22 22:31:15,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:31:16,416 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-22 22:31:16,416 INFO L390 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 24 treesize of output 19 [2022-07-22 22:31:16,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:31:16,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046375185] [2022-07-22 22:31:16,623 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:31:16,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380172413] [2022-07-22 22:31:16,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380172413] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:31:16,623 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:31:16,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2022-07-22 22:31:16,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76485216] [2022-07-22 22:31:16,623 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:31:16,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-22 22:31:16,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:31:16,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-22 22:31:16,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1997, Unknown=20, NotChecked=182, Total=2352 [2022-07-22 22:31:16,625 INFO L87 Difference]: Start difference. First operand 601 states and 901 transitions. Second operand has 34 states, 31 states have (on average 4.32258064516129) internal successors, (134), 31 states have internal predecessors, (134), 13 states have call successors, (35), 7 states have call predecessors, (35), 11 states have return successors, (33), 12 states have call predecessors, (33), 13 states have call successors, (33) [2022-07-22 22:31:17,333 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_7062 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7062))) (exists ((v_ArrVal_7061 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7061) |c_#memory_$Pointer$.offset|)))) (exists ((v_ArrVal_7059 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7059) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_7060 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7060) |c_#memory_$Pointer$.base|))) is different from true [2022-07-22 22:31:23,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:31:23,497 INFO L93 Difference]: Finished difference Result 1280 states and 2000 transitions. [2022-07-22 22:31:23,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-22 22:31:23,498 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 4.32258064516129) internal successors, (134), 31 states have internal predecessors, (134), 13 states have call successors, (35), 7 states have call predecessors, (35), 11 states have return successors, (33), 12 states have call predecessors, (33), 13 states have call successors, (33) Word has length 288 [2022-07-22 22:31:23,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:31:23,504 INFO L225 Difference]: With dead ends: 1280 [2022-07-22 22:31:23,504 INFO L226 Difference]: Without dead ends: 752 [2022-07-22 22:31:23,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 432 SyntacticMatches, 6 SemanticMatches, 64 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=281, Invalid=3612, Unknown=25, NotChecked=372, Total=4290 [2022-07-22 22:31:23,510 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 211 mSDsluCounter, 5752 mSDsCounter, 0 mSdLazyCounter, 3326 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 6347 SdHoareTripleChecker+Invalid, 10045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 3326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6494 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-07-22 22:31:23,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 6347 Invalid, 10045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 3326 Invalid, 0 Unknown, 6494 Unchecked, 5.9s Time] [2022-07-22 22:31:23,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-07-22 22:31:23,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 629. [2022-07-22 22:31:23,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 410 states have (on average 1.221951219512195) internal successors, (501), 417 states have internal predecessors, (501), 172 states have call successors, (172), 37 states have call predecessors, (172), 45 states have return successors, (277), 175 states have call predecessors, (277), 170 states have call successors, (277) [2022-07-22 22:31:23,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 950 transitions. [2022-07-22 22:31:23,555 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 950 transitions. Word has length 288 [2022-07-22 22:31:23,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:31:23,555 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 950 transitions. [2022-07-22 22:31:23,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 4.32258064516129) internal successors, (134), 31 states have internal predecessors, (134), 13 states have call successors, (35), 7 states have call predecessors, (35), 11 states have return successors, (33), 12 states have call predecessors, (33), 13 states have call successors, (33) [2022-07-22 22:31:23,556 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 950 transitions. [2022-07-22 22:31:23,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-07-22 22:31:23,558 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:31:23,558 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2022-07-22 22:31:23,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-22 22:31:23,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-07-22 22:31:23,775 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:31:23,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:31:23,776 INFO L85 PathProgramCache]: Analyzing trace with hash -742744467, now seen corresponding path program 1 times [2022-07-22 22:31:23,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:31:23,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109792164] [2022-07-22 22:31:23,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:23,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:31:23,846 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:31:23,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877453108] [2022-07-22 22:31:23,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:23,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:23,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:31:23,848 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:31:23,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-22 22:31:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:24,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 3568 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:31:24,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:31:24,768 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-07-22 22:31:24,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:31:24,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:31:24,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109792164] [2022-07-22 22:31:24,769 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:31:24,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877453108] [2022-07-22 22:31:24,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877453108] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:31:24,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:31:24,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 22:31:24,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339114957] [2022-07-22 22:31:24,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:31:24,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:31:24,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:31:24,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:31:24,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:31:24,773 INFO L87 Difference]: Start difference. First operand 629 states and 950 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-22 22:31:24,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:31:24,823 INFO L93 Difference]: Finished difference Result 1205 states and 1877 transitions. [2022-07-22 22:31:24,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:31:24,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 286 [2022-07-22 22:31:24,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:31:24,829 INFO L225 Difference]: With dead ends: 1205 [2022-07-22 22:31:24,830 INFO L226 Difference]: Without dead ends: 619 [2022-07-22 22:31:24,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:31:24,835 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 2 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:31:24,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1867 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:31:24,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-07-22 22:31:24,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 611. [2022-07-22 22:31:24,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 392 states have (on average 1.2066326530612246) internal successors, (473), 399 states have internal predecessors, (473), 172 states have call successors, (172), 37 states have call predecessors, (172), 45 states have return successors, (277), 175 states have call predecessors, (277), 170 states have call successors, (277) [2022-07-22 22:31:24,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 922 transitions. [2022-07-22 22:31:24,884 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 922 transitions. Word has length 286 [2022-07-22 22:31:24,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:31:24,884 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 922 transitions. [2022-07-22 22:31:24,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-22 22:31:24,885 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 922 transitions. [2022-07-22 22:31:24,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-07-22 22:31:24,887 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:31:24,887 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-07-22 22:31:24,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-22 22:31:25,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-22 22:31:25,115 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:31:25,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:31:25,116 INFO L85 PathProgramCache]: Analyzing trace with hash 910482934, now seen corresponding path program 1 times [2022-07-22 22:31:25,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:31:25,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377211562] [2022-07-22 22:31:25,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:25,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:31:25,192 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:31:25,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [161363992] [2022-07-22 22:31:25,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:25,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:25,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:31:25,194 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:31:25,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-22 22:31:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:26,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 3575 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-22 22:31:26,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:31:26,225 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 198 proven. 1 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-07-22 22:31:26,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:31:26,820 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 70 proven. 13 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2022-07-22 22:31:26,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:31:26,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377211562] [2022-07-22 22:31:26,820 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:31:26,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161363992] [2022-07-22 22:31:26,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161363992] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:31:26,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:31:26,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 22 [2022-07-22 22:31:26,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267105585] [2022-07-22 22:31:26,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:31:26,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 22:31:26,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:31:26,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 22:31:26,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-07-22 22:31:26,822 INFO L87 Difference]: Start difference. First operand 611 states and 922 transitions. Second operand has 22 states, 18 states have (on average 7.277777777777778) internal successors, (131), 15 states have internal predecessors, (131), 6 states have call successors, (35), 3 states have call predecessors, (35), 7 states have return successors, (36), 8 states have call predecessors, (36), 5 states have call successors, (36) [2022-07-22 22:31:27,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:31:27,656 INFO L93 Difference]: Finished difference Result 1111 states and 1746 transitions. [2022-07-22 22:31:27,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 22:31:27,657 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 7.277777777777778) internal successors, (131), 15 states have internal predecessors, (131), 6 states have call successors, (35), 3 states have call predecessors, (35), 7 states have return successors, (36), 8 states have call predecessors, (36), 5 states have call successors, (36) Word has length 304 [2022-07-22 22:31:27,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:31:27,662 INFO L225 Difference]: With dead ends: 1111 [2022-07-22 22:31:27,662 INFO L226 Difference]: Without dead ends: 625 [2022-07-22 22:31:27,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 585 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2022-07-22 22:31:27,667 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 13 mSDsluCounter, 10803 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 11418 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 22:31:27,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 11418 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 22:31:27,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-07-22 22:31:27,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 618. [2022-07-22 22:31:27,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 398 states have (on average 1.2060301507537687) internal successors, (480), 406 states have internal predecessors, (480), 172 states have call successors, (172), 37 states have call predecessors, (172), 46 states have return successors, (293), 175 states have call predecessors, (293), 170 states have call successors, (293) [2022-07-22 22:31:27,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 945 transitions. [2022-07-22 22:31:27,701 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 945 transitions. Word has length 304 [2022-07-22 22:31:27,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:31:27,702 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 945 transitions. [2022-07-22 22:31:27,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 7.277777777777778) internal successors, (131), 15 states have internal predecessors, (131), 6 states have call successors, (35), 3 states have call predecessors, (35), 7 states have return successors, (36), 8 states have call predecessors, (36), 5 states have call successors, (36) [2022-07-22 22:31:27,702 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 945 transitions. [2022-07-22 22:31:27,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-07-22 22:31:27,704 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:31:27,705 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 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, 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] [2022-07-22 22:31:27,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-22 22:31:27,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:27,918 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:31:27,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:31:27,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1305693065, now seen corresponding path program 2 times [2022-07-22 22:31:27,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:31:27,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947515535] [2022-07-22 22:31:27,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:27,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:31:27,988 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:31:27,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [188842469] [2022-07-22 22:31:27,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:31:27,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:27,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:31:27,990 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:31:28,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-22 22:31:29,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:31:29,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:31:29,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 3568 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-22 22:31:29,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:31:29,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-07-22 22:31:29,844 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-22 22:31:29,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:31:29,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:31:29,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947515535] [2022-07-22 22:31:29,845 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:31:29,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188842469] [2022-07-22 22:31:29,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188842469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:31:29,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:31:29,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 22:31:29,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145767811] [2022-07-22 22:31:29,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:31:29,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 22:31:29,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:31:29,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 22:31:29,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:31:29,846 INFO L87 Difference]: Start difference. First operand 618 states and 945 transitions. Second operand has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 11 states have internal predecessors, (118), 6 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2022-07-22 22:31:34,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:31:34,553 INFO L93 Difference]: Finished difference Result 1235 states and 1985 transitions. [2022-07-22 22:31:34,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 22:31:34,554 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 11 states have internal predecessors, (118), 6 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) Word has length 288 [2022-07-22 22:31:34,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:31:34,558 INFO L225 Difference]: With dead ends: 1235 [2022-07-22 22:31:34,558 INFO L226 Difference]: Without dead ends: 660 [2022-07-22 22:31:34,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:31:34,561 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 111 mSDsluCounter, 4836 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 5418 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:31:34,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 5418 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-22 22:31:34,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-07-22 22:31:34,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 616. [2022-07-22 22:31:34,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 395 states have (on average 1.2050632911392405) internal successors, (476), 403 states have internal predecessors, (476), 172 states have call successors, (172), 37 states have call predecessors, (172), 47 states have return successors, (311), 176 states have call predecessors, (311), 170 states have call successors, (311) [2022-07-22 22:31:34,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 959 transitions. [2022-07-22 22:31:34,619 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 959 transitions. Word has length 288 [2022-07-22 22:31:34,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:31:34,619 INFO L495 AbstractCegarLoop]: Abstraction has 616 states and 959 transitions. [2022-07-22 22:31:34,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 11 states have internal predecessors, (118), 6 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2022-07-22 22:31:34,619 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 959 transitions. [2022-07-22 22:31:34,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-07-22 22:31:34,621 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:31:34,622 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 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, 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] [2022-07-22 22:31:34,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-22 22:31:34,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:34,844 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:31:34,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:31:34,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1367492170, now seen corresponding path program 1 times [2022-07-22 22:31:34,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:31:34,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962218150] [2022-07-22 22:31:34,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:34,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:31:34,927 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:31:34,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1741563096] [2022-07-22 22:31:34,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:34,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:34,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:31:34,929 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:31:34,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-22 22:31:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:35,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 3572 conjuncts, 79 conjunts are in the unsatisfiable core [2022-07-22 22:31:35,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:31:36,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-07-22 22:31:36,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-07-22 22:31:36,648 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-07-22 22:31:36,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:31:36,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:31:36,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962218150] [2022-07-22 22:31:36,649 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:31:36,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741563096] [2022-07-22 22:31:36,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741563096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:31:36,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:31:36,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-22 22:31:36,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038404276] [2022-07-22 22:31:36,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:31:36,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 22:31:36,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:31:36,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 22:31:36,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:31:36,651 INFO L87 Difference]: Start difference. First operand 616 states and 959 transitions. Second operand has 16 states, 16 states have (on average 8.4375) internal successors, (135), 15 states have internal predecessors, (135), 8 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) [2022-07-22 22:31:43,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 22:31:45,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:31:45,989 INFO L93 Difference]: Finished difference Result 1231 states and 1983 transitions. [2022-07-22 22:31:45,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 22:31:45,989 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.4375) internal successors, (135), 15 states have internal predecessors, (135), 8 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) Word has length 294 [2022-07-22 22:31:45,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:31:45,996 INFO L225 Difference]: With dead ends: 1231 [2022-07-22 22:31:45,996 INFO L226 Difference]: Without dead ends: 722 [2022-07-22 22:31:46,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 277 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2022-07-22 22:31:46,000 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 148 mSDsluCounter, 6510 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 7103 SdHoareTripleChecker+Invalid, 1723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 169 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:31:46,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 7103 Invalid, 1723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1527 Invalid, 0 Unknown, 169 Unchecked, 9.0s Time] [2022-07-22 22:31:46,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-07-22 22:31:46,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 673. [2022-07-22 22:31:46,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 439 states have (on average 1.1958997722095672) internal successors, (525), 448 states have internal predecessors, (525), 178 states have call successors, (178), 41 states have call predecessors, (178), 54 states have return successors, (370), 184 states have call predecessors, (370), 176 states have call successors, (370) [2022-07-22 22:31:46,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1073 transitions. [2022-07-22 22:31:46,046 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1073 transitions. Word has length 294 [2022-07-22 22:31:46,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:31:46,047 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 1073 transitions. [2022-07-22 22:31:46,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.4375) internal successors, (135), 15 states have internal predecessors, (135), 8 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (31), 8 states have call predecessors, (31), 8 states have call successors, (31) [2022-07-22 22:31:46,047 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1073 transitions. [2022-07-22 22:31:46,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-07-22 22:31:46,050 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:31:46,050 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 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, 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] [2022-07-22 22:31:46,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-07-22 22:31:46,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-22 22:31:46,267 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:31:46,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:31:46,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1267571833, now seen corresponding path program 1 times [2022-07-22 22:31:46,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:31:46,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508251717] [2022-07-22 22:31:46,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:46,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:31:46,342 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:31:46,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [57192261] [2022-07-22 22:31:46,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:46,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:46,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:31:46,344 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:31:46,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-22 22:31:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:47,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 3563 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 22:31:47,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:31:47,450 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-07-22 22:31:47,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:31:47,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:31:47,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508251717] [2022-07-22 22:31:47,450 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:31:47,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57192261] [2022-07-22 22:31:47,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57192261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:31:47,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:31:47,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:31:47,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366145223] [2022-07-22 22:31:47,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:31:47,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:31:47,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:31:47,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:31:47,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:31:47,452 INFO L87 Difference]: Start difference. First operand 673 states and 1073 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-22 22:31:48,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:31:48,942 INFO L93 Difference]: Finished difference Result 1285 states and 2152 transitions. [2022-07-22 22:31:48,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:31:48,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 288 [2022-07-22 22:31:48,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:31:48,948 INFO L225 Difference]: With dead ends: 1285 [2022-07-22 22:31:48,949 INFO L226 Difference]: Without dead ends: 655 [2022-07-22 22:31:48,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:31:48,954 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 7 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:31:48,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2411 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 22:31:48,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-07-22 22:31:48,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 655. [2022-07-22 22:31:48,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 423 states have (on average 1.1914893617021276) internal successors, (504), 431 states have internal predecessors, (504), 178 states have call successors, (178), 41 states have call predecessors, (178), 52 states have return successors, (332), 183 states have call predecessors, (332), 176 states have call successors, (332) [2022-07-22 22:31:48,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1014 transitions. [2022-07-22 22:31:48,993 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1014 transitions. Word has length 288 [2022-07-22 22:31:48,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:31:48,993 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 1014 transitions. [2022-07-22 22:31:48,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-22 22:31:48,994 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1014 transitions. [2022-07-22 22:31:48,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-07-22 22:31:48,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:31:48,996 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 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, 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] [2022-07-22 22:31:49,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-07-22 22:31:49,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-22 22:31:49,219 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:31:49,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:31:49,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1263082334, now seen corresponding path program 1 times [2022-07-22 22:31:49,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:31:49,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798423599] [2022-07-22 22:31:49,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:49,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:31:49,297 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:31:49,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1639634761] [2022-07-22 22:31:49,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:31:49,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:31:49,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:31:49,299 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:31:49,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-22 22:31:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:31:50,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 3577 conjuncts, 161 conjunts are in the unsatisfiable core [2022-07-22 22:31:50,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:31:50,491 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:31:50,774 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-22 22:31:50,774 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-07-22 22:31:50,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:31:50,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-22 22:32:00,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:00,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-22 22:32:00,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:00,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-22 22:32:00,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:00,432 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-22 22:32:00,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:00,439 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-22 22:32:02,447 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_9418 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_9418) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_9419 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_9419) |c_#memory_$Pointer$.base|))) is different from true [2022-07-22 22:32:06,485 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2022-07-22 22:32:06,491 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-07-22 22:32:06,491 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 1 [2022-07-22 22:32:06,496 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 267 proven. 35 refuted. 3 times theorem prover too weak. 207 trivial. 0 not checked. [2022-07-22 22:32:06,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:32:08,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:32:08,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798423599] [2022-07-22 22:32:08,628 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:32:08,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639634761] [2022-07-22 22:32:08,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639634761] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:32:08,628 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:32:08,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2022-07-22 22:32:08,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027189304] [2022-07-22 22:32:08,628 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:32:08,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-22 22:32:08,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:32:08,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-22 22:32:08,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1124, Unknown=27, NotChecked=68, Total=1332 [2022-07-22 22:32:08,630 INFO L87 Difference]: Start difference. First operand 655 states and 1014 transitions. Second operand has 30 states, 27 states have (on average 5.666666666666667) internal successors, (153), 26 states have internal predecessors, (153), 13 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (34), 9 states have call predecessors, (34), 13 states have call successors, (34) [2022-07-22 22:32:30,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:32:30,119 INFO L93 Difference]: Finished difference Result 1586 states and 2611 transitions. [2022-07-22 22:32:30,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 22:32:30,120 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 5.666666666666667) internal successors, (153), 26 states have internal predecessors, (153), 13 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (34), 9 states have call predecessors, (34), 13 states have call successors, (34) Word has length 297 [2022-07-22 22:32:30,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:32:30,125 INFO L225 Difference]: With dead ends: 1586 [2022-07-22 22:32:30,125 INFO L226 Difference]: Without dead ends: 1016 [2022-07-22 22:32:30,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 437 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=206, Invalid=1995, Unknown=59, NotChecked=92, Total=2352 [2022-07-22 22:32:30,128 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 375 mSDsluCounter, 7090 mSDsCounter, 0 mSdLazyCounter, 4992 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 7721 SdHoareTripleChecker+Invalid, 12085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 4992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6576 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:32:30,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 7721 Invalid, 12085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 4992 Invalid, 0 Unknown, 6576 Unchecked, 8.0s Time] [2022-07-22 22:32:30,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2022-07-22 22:32:30,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 678. [2022-07-22 22:32:30,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 441 states have (on average 1.1927437641723355) internal successors, (526), 450 states have internal predecessors, (526), 181 states have call successors, (181), 41 states have call predecessors, (181), 54 states have return successors, (361), 187 states have call predecessors, (361), 179 states have call successors, (361) [2022-07-22 22:32:30,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1068 transitions. [2022-07-22 22:32:30,195 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1068 transitions. Word has length 297 [2022-07-22 22:32:30,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:32:30,195 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 1068 transitions. [2022-07-22 22:32:30,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 5.666666666666667) internal successors, (153), 26 states have internal predecessors, (153), 13 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (34), 9 states have call predecessors, (34), 13 states have call successors, (34) [2022-07-22 22:32:30,196 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1068 transitions. [2022-07-22 22:32:30,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-07-22 22:32:30,198 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:32:30,198 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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] [2022-07-22 22:32:30,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-22 22:32:30,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-22 22:32:30,419 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:32:30,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:32:30,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1181002405, now seen corresponding path program 1 times [2022-07-22 22:32:30,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:32:30,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351678521] [2022-07-22 22:32:30,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:32:30,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:32:30,484 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:32:30,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [267195074] [2022-07-22 22:32:30,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:32:30,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:32:30,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:32:30,486 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:32:30,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-22 22:32:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:32:31,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 3606 conjuncts, 140 conjunts are in the unsatisfiable core [2022-07-22 22:32:31,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:32:31,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:32:32,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:32,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:32,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:32,226 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 39 [2022-07-22 22:32:32,247 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-07-22 22:32:32,379 INFO L356 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2022-07-22 22:32:32,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2022-07-22 22:32:32,459 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-22 22:32:32,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-22 22:32:34,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:34,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:34,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:34,508 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-07-22 22:32:36,708 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9846 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_9846) |c_#memory_int|)) is different from true [2022-07-22 22:32:38,951 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9847 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| 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|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_9847)) |c_#memory_int|)) is different from true [2022-07-22 22:32:48,195 WARN L855 $PredicateComparison]: unable to prove that (and (not (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616))) (exists ((v_ArrVal_9847 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| 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|) 0 v_ArrVal_9847)) |c_#memory_int|))) is different from true [2022-07-22 22:32:48,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:32:48,568 INFO L356 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2022-07-22 22:32:48,568 INFO L390 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 60 treesize of output 1 [2022-07-22 22:32:48,573 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 272 proven. 17 refuted. 0 times theorem prover too weak. 206 trivial. 8 not checked. [2022-07-22 22:32:48,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:32:49,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:32:49,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351678521] [2022-07-22 22:32:49,836 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:32:49,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267195074] [2022-07-22 22:32:49,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267195074] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:32:49,836 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:32:49,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2022-07-22 22:32:49,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718940827] [2022-07-22 22:32:49,836 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:32:49,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-22 22:32:49,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:32:49,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-22 22:32:49,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1359, Unknown=14, NotChecked=228, Total=1722 [2022-07-22 22:32:49,838 INFO L87 Difference]: Start difference. First operand 678 states and 1068 transitions. Second operand has 33 states, 29 states have (on average 5.310344827586207) internal successors, (154), 29 states have internal predecessors, (154), 14 states have call successors, (37), 8 states have call predecessors, (37), 12 states have return successors, (35), 13 states have call predecessors, (35), 14 states have call successors, (35) [2022-07-22 22:33:05,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:33:05,822 INFO L93 Difference]: Finished difference Result 1464 states and 2363 transitions. [2022-07-22 22:33:05,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-22 22:33:05,822 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 5.310344827586207) internal successors, (154), 29 states have internal predecessors, (154), 14 states have call successors, (37), 8 states have call predecessors, (37), 12 states have return successors, (35), 13 states have call predecessors, (35), 14 states have call successors, (35) Word has length 299 [2022-07-22 22:33:05,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:33:05,829 INFO L225 Difference]: With dead ends: 1464 [2022-07-22 22:33:05,829 INFO L226 Difference]: Without dead ends: 877 [2022-07-22 22:33:05,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 431 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=190, Invalid=2336, Unknown=36, NotChecked=300, Total=2862 [2022-07-22 22:33:05,833 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 492 mSDsluCounter, 5582 mSDsCounter, 0 mSdLazyCounter, 4342 mSolverCounterSat, 721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 6224 SdHoareTripleChecker+Invalid, 13076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 721 IncrementalHoareTripleChecker+Valid, 4342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8013 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-07-22 22:33:05,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 6224 Invalid, 13076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [721 Valid, 4342 Invalid, 0 Unknown, 8013 Unchecked, 6.8s Time] [2022-07-22 22:33:05,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2022-07-22 22:33:05,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 727. [2022-07-22 22:33:05,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 478 states have (on average 1.1945606694560669) internal successors, (571), 489 states have internal predecessors, (571), 186 states have call successors, (186), 45 states have call predecessors, (186), 61 states have return successors, (389), 193 states have call predecessors, (389), 184 states have call successors, (389) [2022-07-22 22:33:05,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1146 transitions. [2022-07-22 22:33:05,886 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1146 transitions. Word has length 299 [2022-07-22 22:33:05,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:33:05,887 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 1146 transitions. [2022-07-22 22:33:05,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 5.310344827586207) internal successors, (154), 29 states have internal predecessors, (154), 14 states have call successors, (37), 8 states have call predecessors, (37), 12 states have return successors, (35), 13 states have call predecessors, (35), 14 states have call successors, (35) [2022-07-22 22:33:05,887 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1146 transitions. [2022-07-22 22:33:05,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-07-22 22:33:05,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:33:05,890 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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] [2022-07-22 22:33:05,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-07-22 22:33:06,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-22 22:33:06,115 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:33:06,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:33:06,116 INFO L85 PathProgramCache]: Analyzing trace with hash -576673630, now seen corresponding path program 1 times [2022-07-22 22:33:06,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:33:06,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359090778] [2022-07-22 22:33:06,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:33:06,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:33:06,188 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:33:06,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836530045] [2022-07-22 22:33:06,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:33:06,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:33:06,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:33:06,190 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:33:06,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-07-22 22:33:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:33:07,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 3567 conjuncts, 314 conjunts are in the unsatisfiable core [2022-07-22 22:33:07,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:33:07,474 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:33:07,740 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-22 22:33:07,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-07-22 22:33:07,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:33:07,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-22 22:33:09,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:33:09,814 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-22 22:33:09,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:33:09,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-22 22:33:11,987 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_10258 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_10258))) (exists ((v_ArrVal_10257 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_10257) |c_#memory_$Pointer$.base|))) is different from true [2022-07-22 22:33:14,170 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_10262 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_10260 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_10260))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_10262)) |c_#memory_$Pointer$.base|))) is different from true [2022-07-22 22:33:16,183 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_10262 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_10260 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_10260)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_10262))))) is different from true [2022-07-22 22:33:16,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:33:16,473 INFO L356 Elim1Store]: treesize reduction 61, result has 37.1 percent of original size [2022-07-22 22:33:16,473 INFO L390 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 46 treesize of output 98 [2022-07-22 22:33:16,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:33:16,525 INFO L356 Elim1Store]: treesize reduction 61, result has 37.1 percent of original size [2022-07-22 22:33:16,526 INFO L390 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 46 treesize of output 98 [2022-07-22 22:33:16,542 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-22 22:33:16,542 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-22 22:33:16,566 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-22 22:33:16,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-22 22:33:16,634 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-22 22:33:16,651 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-22 22:33:16,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:33:16,671 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 34 [2022-07-22 22:33:16,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:33:16,727 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 34 [2022-07-22 22:33:16,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 30 [2022-07-22 22:33:16,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 73 [2022-07-22 22:33:29,281 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 298 proven. 27 refuted. 0 times theorem prover too weak. 167 trivial. 10 not checked. [2022-07-22 22:33:29,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:33:31,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:33:31,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359090778] [2022-07-22 22:33:31,072 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:33:31,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836530045] [2022-07-22 22:33:31,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836530045] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:33:31,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:33:31,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2022-07-22 22:33:31,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639067895] [2022-07-22 22:33:31,073 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:33:31,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-22 22:33:31,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:33:31,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-22 22:33:31,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1073, Unknown=17, NotChecked=204, Total=1406 [2022-07-22 22:33:31,074 INFO L87 Difference]: Start difference. First operand 727 states and 1146 transitions. Second operand has 31 states, 27 states have (on average 5.666666666666667) internal successors, (153), 30 states have internal predecessors, (153), 15 states have call successors, (36), 8 states have call predecessors, (36), 13 states have return successors, (34), 13 states have call predecessors, (34), 15 states have call successors, (34) [2022-07-22 22:33:55,513 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers []