./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_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 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:22:39,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:22:39,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:22:39,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:22:39,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:22:39,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:22:39,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:22:39,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:22:39,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:22:39,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:22:39,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:22:39,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:22:39,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:22:39,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:22:39,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:22:39,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:22:39,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:22:39,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:22:39,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:22:39,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:22:39,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:22:39,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:22:39,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:22:39,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:22:39,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:22:39,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:22:39,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:22:39,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:22:39,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:22:39,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:22:39,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:22:39,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:22:39,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:22:39,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:22:39,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:22:39,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:22:39,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:22:39,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:22:39,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:22:39,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:22:39,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:22:39,715 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:22:39,736 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:22:39,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:22:39,739 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:22:39,739 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:22:39,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:22:39,740 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:22:39,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:22:39,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:22:39,741 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:22:39,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:22:39,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:22:39,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:22:39,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:22:39,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:22:39,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:22:39,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:22:39,743 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:22:39,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:22:39,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:22:39,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:22:39,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:22:39,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:22:39,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:22:39,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:22:39,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:22:39,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:22:39,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:22:39,744 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:22:39,744 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:22:39,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:22:39,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:22:39,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c [2021-12-16 03:22:39,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:22:39,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:22:39,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:22:39,941 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:22:39,942 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:22:39,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2021-12-16 03:22:39,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aea0233cb/86e76f2597c44c618541b9e327b63f02/FLAG527940fa1 [2021-12-16 03:22:40,579 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:22:40,580 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2021-12-16 03:22:40,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aea0233cb/86e76f2597c44c618541b9e327b63f02/FLAG527940fa1 [2021-12-16 03:22:41,018 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aea0233cb/86e76f2597c44c618541b9e327b63f02 [2021-12-16 03:22:41,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:22:41,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:22:41,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:22:41,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:22:41,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:22:41,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:22:41" (1/1) ... [2021-12-16 03:22:41,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5734e439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:41, skipping insertion in model container [2021-12-16 03:22:41,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:22:41" (1/1) ... [2021-12-16 03:22:41,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:22:41,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:22:41,332 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_s_sift_either_harness.i[4506,4519] [2021-12-16 03:22:41,335 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_s_sift_either_harness.i[4566,4579] [2021-12-16 03:22:41,814 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:41,815 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:41,815 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:41,816 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:41,817 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:41,823 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:41,825 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:41,827 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:41,829 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:41,830 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:41,831 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:41,831 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:41,831 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,019 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:22:42,021 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:22:42,021 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:22:42,023 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:22:42,024 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:22:42,024 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:22:42,025 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:22:42,025 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:22:42,032 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:22:42,033 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:22:42,115 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:22:42,147 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,147 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,149 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,158 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,215 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,215 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,216 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,216 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,216 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,216 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,217 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,217 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,217 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,218 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,218 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,218 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,218 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,221 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,221 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,221 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,221 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,224 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,224 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,228 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,230 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,230 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,240 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:22:42,270 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:22:42,278 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_s_sift_either_harness.i[4506,4519] [2021-12-16 03:22:42,282 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_s_sift_either_harness.i[4566,4579] [2021-12-16 03:22:42,315 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,322 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,323 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,323 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,352 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,356 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,357 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,357 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,358 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,358 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,359 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,359 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,359 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,390 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:22:42,407 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:22:42,408 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:22:42,408 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:22:42,411 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:22:42,411 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:22:42,411 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:22:42,412 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:22:42,412 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:22:42,413 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:22:42,435 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:22:42,448 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,456 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,457 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,460 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,481 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,482 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,482 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,482 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,482 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,482 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,484 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,485 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,485 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,485 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,486 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,486 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,487 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,488 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,489 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,489 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,490 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,493 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,493 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,497 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,497 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,498 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:22:42,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:22:42,657 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:22:42,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:42 WrapperNode [2021-12-16 03:22:42,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:22:42,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:22:42,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:22:42,660 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:22:42,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:42" (1/1) ... [2021-12-16 03:22:42,737 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:42" (1/1) ... [2021-12-16 03:22:42,784 INFO L137 Inliner]: procedures = 697, calls = 1887, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 919 [2021-12-16 03:22:42,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:22:42,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:22:42,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:22:42,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:22:42,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:42" (1/1) ... [2021-12-16 03:22:42,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:42" (1/1) ... [2021-12-16 03:22:42,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:42" (1/1) ... [2021-12-16 03:22:42,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:42" (1/1) ... [2021-12-16 03:22:42,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:42" (1/1) ... [2021-12-16 03:22:42,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:42" (1/1) ... [2021-12-16 03:22:42,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:42" (1/1) ... [2021-12-16 03:22:42,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:22:42,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:22:42,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:22:42,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:22:42,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:42" (1/1) ... [2021-12-16 03:22:42,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:22:42,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:22:42,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 03:22:42,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 03:22:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_either [2021-12-16 03:22:42,939 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_either [2021-12-16 03:22:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-12-16 03:22:42,939 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-12-16 03:22:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-16 03:22:42,940 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-16 03:22:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:22:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-16 03:22:42,940 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-16 03:22:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-16 03:22:42,941 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-16 03:22:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-16 03:22:42,941 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-16 03:22:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-12-16 03:22:42,941 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-12-16 03:22:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:22:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-16 03:22:42,943 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-16 03:22:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 03:22:42,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 03:22:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:22:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:22:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 03:22:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-12-16 03:22:42,960 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-12-16 03:22:42,960 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-16 03:22:42,963 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-16 03:22:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:22:42,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:22:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-16 03:22:42,964 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-16 03:22:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-16 03:22:42,964 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-16 03:22:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-16 03:22:42,964 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-16 03:22:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-16 03:22:42,965 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-16 03:22:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-16 03:22:42,965 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-16 03:22:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 03:22:42,965 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 03:22:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-16 03:22:42,965 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-16 03:22:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:22:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:22:42,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:22:42,966 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-12-16 03:22:42,966 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-12-16 03:22:42,966 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-16 03:22:42,966 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-16 03:22:42,966 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-16 03:22:42,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-16 03:22:42,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:22:42,967 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-16 03:22:42,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-16 03:22:42,967 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-12-16 03:22:42,967 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-12-16 03:22:42,967 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-16 03:22:42,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-16 03:22:42,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:22:43,231 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:22:43,232 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:22:43,905 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:22:43,917 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:22:43,918 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-16 03:22:43,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:22:43 BoogieIcfgContainer [2021-12-16 03:22:43,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:22:43,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:22:43,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:22:43,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:22:43,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:22:41" (1/3) ... [2021-12-16 03:22:43,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64408eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:22:43, skipping insertion in model container [2021-12-16 03:22:43,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:22:42" (2/3) ... [2021-12-16 03:22:43,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64408eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:22:43, skipping insertion in model container [2021-12-16 03:22:43,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:22:43" (3/3) ... [2021-12-16 03:22:43,926 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_either_harness.i [2021-12-16 03:22:43,929 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:22:43,929 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 03:22:43,963 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:22:43,976 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 03:22:43,976 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 03:22:44,006 INFO L276 IsEmpty]: Start isEmpty. Operand has 358 states, 218 states have (on average 1.2660550458715596) internal successors, (276), 221 states have internal predecessors, (276), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) [2021-12-16 03:22:44,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-16 03:22:44,021 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:22:44,022 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:22:44,023 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:22:44,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:22:44,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1703596242, now seen corresponding path program 1 times [2021-12-16 03:22:44,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:22:44,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695495863] [2021-12-16 03:22:44,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:44,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:22:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:44,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:22:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:44,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:22:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:44,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:22:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:44,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 03:22:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:44,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:22:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:44,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:22:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:44,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 03:22:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:44,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:22:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:44,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:22:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:44,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-16 03:22:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:44,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 03:22:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:44,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 03:22:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:44,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 03:22:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:44,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 03:22:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:44,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 03:22:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:44,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 03:22:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:44,686 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-16 03:22:44,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:22:44,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695495863] [2021-12-16 03:22:44,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695495863] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:22:44,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:22:44,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:22:44,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199497076] [2021-12-16 03:22:44,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:22:44,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:22:44,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:22:44,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:22:44,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:22:44,737 INFO L87 Difference]: Start difference. First operand has 358 states, 218 states have (on average 1.2660550458715596) internal successors, (276), 221 states have internal predecessors, (276), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:22:45,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:22:45,581 INFO L93 Difference]: Finished difference Result 821 states and 1341 transitions. [2021-12-16 03:22:45,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 03:22:45,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 103 [2021-12-16 03:22:45,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:22:45,592 INFO L225 Difference]: With dead ends: 821 [2021-12-16 03:22:45,592 INFO L226 Difference]: Without dead ends: 469 [2021-12-16 03:22:45,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:22:45,600 INFO L933 BasicCegarLoop]: 475 mSDtfsCounter, 267 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 03:22:45,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 627 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 03:22:45,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-12-16 03:22:45,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 351. [2021-12-16 03:22:45,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 213 states have (on average 1.2300469483568075) internal successors, (262), 215 states have internal predecessors, (262), 113 states have call successors, (113), 24 states have call predecessors, (113), 23 states have return successors, (111), 111 states have call predecessors, (111), 111 states have call successors, (111) [2021-12-16 03:22:45,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 486 transitions. [2021-12-16 03:22:45,653 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 486 transitions. Word has length 103 [2021-12-16 03:22:45,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:22:45,654 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 486 transitions. [2021-12-16 03:22:45,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:22:45,654 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 486 transitions. [2021-12-16 03:22:45,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-16 03:22:45,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:22:45,656 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:22:45,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:22:45,657 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:22:45,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:22:45,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1175202252, now seen corresponding path program 1 times [2021-12-16 03:22:45,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:22:45,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098242423] [2021-12-16 03:22:45,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:45,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:22:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:45,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:22:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:45,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:22:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:45,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:22:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:45,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 03:22:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:45,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:22:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:45,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:22:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:45,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 03:22:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:45,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:22:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:45,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:22:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:45,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-16 03:22:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:45,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 03:22:45,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:45,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 03:22:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:45,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 03:22:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:45,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 03:22:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:45,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 03:22:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:45,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 03:22:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:45,914 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-16 03:22:45,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:22:45,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098242423] [2021-12-16 03:22:45,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098242423] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:22:45,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712704789] [2021-12-16 03:22:45,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:45,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:45,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:22:45,917 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:22:45,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 03:22:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:46,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 2158 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 03:22:46,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:22:46,386 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-12-16 03:22:46,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:22:46,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712704789] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:22:46,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:22:46,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-16 03:22:46,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866713767] [2021-12-16 03:22:46,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:22:46,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:22:46,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:22:46,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:22:46,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:22:46,389 INFO L87 Difference]: Start difference. First operand 351 states and 486 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:22:46,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:22:46,417 INFO L93 Difference]: Finished difference Result 437 states and 596 transitions. [2021-12-16 03:22:46,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:22:46,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 103 [2021-12-16 03:22:46,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:22:46,422 INFO L225 Difference]: With dead ends: 437 [2021-12-16 03:22:46,422 INFO L226 Difference]: Without dead ends: 352 [2021-12-16 03:22:46,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:22:46,424 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 0 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:22:46,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 965 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:22:46,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-12-16 03:22:46,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2021-12-16 03:22:46,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 214 states have (on average 1.2289719626168225) internal successors, (263), 216 states have internal predecessors, (263), 113 states have call successors, (113), 24 states have call predecessors, (113), 23 states have return successors, (111), 111 states have call predecessors, (111), 111 states have call successors, (111) [2021-12-16 03:22:46,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 487 transitions. [2021-12-16 03:22:46,487 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 487 transitions. Word has length 103 [2021-12-16 03:22:46,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:22:46,488 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 487 transitions. [2021-12-16 03:22:46,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:22:46,488 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 487 transitions. [2021-12-16 03:22:46,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 03:22:46,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:22:46,489 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 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] [2021-12-16 03:22:46,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-16 03:22:46,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:46,710 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:22:46,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:22:46,711 INFO L85 PathProgramCache]: Analyzing trace with hash -99696786, now seen corresponding path program 1 times [2021-12-16 03:22:46,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:22:46,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666486763] [2021-12-16 03:22:46,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:46,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:22:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:46,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:22:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:46,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:22:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:46,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:22:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:46,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 03:22:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:46,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:22:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:46,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:22:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:46,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 03:22:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:46,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:22:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:46,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:22:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:46,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-16 03:22:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:46,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 03:22:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:46,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 03:22:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:46,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 03:22:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:46,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 03:22:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:46,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 03:22:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:46,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 03:22:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:46,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 03:22:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:46,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-16 03:22:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:46,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 03:22:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:46,983 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-12-16 03:22:46,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:22:46,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666486763] [2021-12-16 03:22:46,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666486763] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:22:46,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400401769] [2021-12-16 03:22:46,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:46,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:46,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:22:46,985 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:22:47,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 03:22:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:47,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 03:22:47,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:22:47,557 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-12-16 03:22:47,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:22:47,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400401769] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:22:47,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:22:47,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-16 03:22:47,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694919508] [2021-12-16 03:22:47,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:22:47,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:22:47,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:22:47,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:22:47,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:22:47,560 INFO L87 Difference]: Start difference. First operand 352 states and 487 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-16 03:22:47,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:22:47,712 INFO L93 Difference]: Finished difference Result 670 states and 938 transitions. [2021-12-16 03:22:47,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:22:47,713 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 124 [2021-12-16 03:22:47,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:22:47,715 INFO L225 Difference]: With dead ends: 670 [2021-12-16 03:22:47,715 INFO L226 Difference]: Without dead ends: 354 [2021-12-16 03:22:47,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-16 03:22:47,717 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 504 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:22:47,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [520 Valid, 1717 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:22:47,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-12-16 03:22:47,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2021-12-16 03:22:47,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 215 states have (on average 1.2279069767441861) internal successors, (264), 218 states have internal predecessors, (264), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (119), 111 states have call predecessors, (119), 111 states have call successors, (119) [2021-12-16 03:22:47,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 496 transitions. [2021-12-16 03:22:47,732 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 496 transitions. Word has length 124 [2021-12-16 03:22:47,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:22:47,732 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 496 transitions. [2021-12-16 03:22:47,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-16 03:22:47,733 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 496 transitions. [2021-12-16 03:22:47,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-16 03:22:47,734 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:22:47,734 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 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] [2021-12-16 03:22:47,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 03:22:47,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-16 03:22:47,955 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:22:47,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:22:47,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2138740587, now seen corresponding path program 1 times [2021-12-16 03:22:47,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:22:47,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711583948] [2021-12-16 03:22:47,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:47,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:22:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:48,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:22:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:48,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:22:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:48,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:22:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:48,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 03:22:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:48,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:22:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:48,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:22:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:48,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 03:22:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:48,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:22:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:48,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:22:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:48,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-16 03:22:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:48,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:22:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:48,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 03:22:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:48,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 03:22:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:48,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 03:22:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:48,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 03:22:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:48,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 03:22:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:48,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 03:22:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:48,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-16 03:22:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:48,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 03:22:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:48,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 03:22:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:48,196 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-12-16 03:22:48,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:22:48,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711583948] [2021-12-16 03:22:48,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711583948] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:22:48,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379046343] [2021-12-16 03:22:48,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:48,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:48,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:22:48,198 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:22:48,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 03:22:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:48,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 2321 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 03:22:48,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:22:48,761 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-12-16 03:22:48,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:22:48,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379046343] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:22:48,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:22:48,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2021-12-16 03:22:48,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075844097] [2021-12-16 03:22:48,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:22:48,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:22:48,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:22:48,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:22:48,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-16 03:22:48,763 INFO L87 Difference]: Start difference. First operand 354 states and 496 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-16 03:22:49,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:22:49,065 INFO L93 Difference]: Finished difference Result 693 states and 993 transitions. [2021-12-16 03:22:49,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 03:22:49,065 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 132 [2021-12-16 03:22:49,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:22:49,068 INFO L225 Difference]: With dead ends: 693 [2021-12-16 03:22:49,068 INFO L226 Difference]: Without dead ends: 375 [2021-12-16 03:22:49,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-12-16 03:22:49,070 INFO L933 BasicCegarLoop]: 430 mSDtfsCounter, 568 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 2489 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:22:49,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 2489 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 03:22:49,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-12-16 03:22:49,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 373. [2021-12-16 03:22:49,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 231 states have (on average 1.2380952380952381) internal successors, (286), 234 states have internal predecessors, (286), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2021-12-16 03:22:49,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 533 transitions. [2021-12-16 03:22:49,083 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 533 transitions. Word has length 132 [2021-12-16 03:22:49,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:22:49,083 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 533 transitions. [2021-12-16 03:22:49,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-16 03:22:49,084 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 533 transitions. [2021-12-16 03:22:49,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-16 03:22:49,085 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:22:49,085 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 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] [2021-12-16 03:22:49,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 03:22:49,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:49,301 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:22:49,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:22:49,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1048395964, now seen corresponding path program 1 times [2021-12-16 03:22:49,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:22:49,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610709849] [2021-12-16 03:22:49,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:49,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:22:49,338 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:22:49,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089812349] [2021-12-16 03:22:49,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:49,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:49,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:22:49,360 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:22:49,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 03:22:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:49,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 2462 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 03:22:49,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:22:49,936 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-12-16 03:22:49,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:22:49,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:22:49,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610709849] [2021-12-16 03:22:49,937 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:22:49,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089812349] [2021-12-16 03:22:49,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089812349] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:22:49,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:22:49,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 03:22:49,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126790543] [2021-12-16 03:22:49,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:22:49,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:22:49,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:22:49,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:22:49,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:22:49,938 INFO L87 Difference]: Start difference. First operand 373 states and 533 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-16 03:22:50,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:22:50,182 INFO L93 Difference]: Finished difference Result 718 states and 1050 transitions. [2021-12-16 03:22:50,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 03:22:50,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 147 [2021-12-16 03:22:50,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:22:50,185 INFO L225 Difference]: With dead ends: 718 [2021-12-16 03:22:50,185 INFO L226 Difference]: Without dead ends: 381 [2021-12-16 03:22:50,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:22:50,187 INFO L933 BasicCegarLoop]: 439 mSDtfsCounter, 528 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:22:50,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 2112 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 03:22:50,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-12-16 03:22:50,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 373. [2021-12-16 03:22:50,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 231 states have (on average 1.2380952380952381) internal successors, (286), 234 states have internal predecessors, (286), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2021-12-16 03:22:50,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 533 transitions. [2021-12-16 03:22:50,201 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 533 transitions. Word has length 147 [2021-12-16 03:22:50,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:22:50,202 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 533 transitions. [2021-12-16 03:22:50,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-16 03:22:50,202 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 533 transitions. [2021-12-16 03:22:50,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 03:22:50,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:22:50,204 INFO L514 BasicCegarLoop]: 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] [2021-12-16 03:22:50,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 03:22:50,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:50,424 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:22:50,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:22:50,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1514523470, now seen corresponding path program 1 times [2021-12-16 03:22:50,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:22:50,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241620205] [2021-12-16 03:22:50,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:50,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:22:50,460 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:22:50,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2052243488] [2021-12-16 03:22:50,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:50,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:50,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:22:50,476 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:22:50,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 03:22:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:50,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 2534 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 03:22:50,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:22:51,112 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-16 03:22:51,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:22:51,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:22:51,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241620205] [2021-12-16 03:22:51,113 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:22:51,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052243488] [2021-12-16 03:22:51,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052243488] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:22:51,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:22:51,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 03:22:51,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973347148] [2021-12-16 03:22:51,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:22:51,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 03:22:51,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:22:51,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 03:22:51,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:22:51,114 INFO L87 Difference]: Start difference. First operand 373 states and 533 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 5 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2021-12-16 03:22:51,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:22:51,512 INFO L93 Difference]: Finished difference Result 728 states and 1059 transitions. [2021-12-16 03:22:51,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 03:22:51,512 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 5 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 163 [2021-12-16 03:22:51,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:22:51,515 INFO L225 Difference]: With dead ends: 728 [2021-12-16 03:22:51,515 INFO L226 Difference]: Without dead ends: 391 [2021-12-16 03:22:51,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-16 03:22:51,517 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 599 mSDsluCounter, 2433 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 2857 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 03:22:51,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [631 Valid, 2857 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 03:22:51,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-12-16 03:22:51,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 373. [2021-12-16 03:22:51,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 231 states have (on average 1.2380952380952381) internal successors, (286), 234 states have internal predecessors, (286), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2021-12-16 03:22:51,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 533 transitions. [2021-12-16 03:22:51,529 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 533 transitions. Word has length 163 [2021-12-16 03:22:51,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:22:51,530 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 533 transitions. [2021-12-16 03:22:51,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 5 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2021-12-16 03:22:51,530 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 533 transitions. [2021-12-16 03:22:51,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-16 03:22:51,531 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:22:51,532 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:22:51,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 03:22:51,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:51,753 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:22:51,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:22:51,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1136730081, now seen corresponding path program 1 times [2021-12-16 03:22:51,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:22:51,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698957785] [2021-12-16 03:22:51,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:51,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:22:51,804 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:22:51,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [724381060] [2021-12-16 03:22:51,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:51,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:51,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:22:51,806 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:22:51,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 03:22:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:52,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 2675 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 03:22:52,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:22:52,460 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-12-16 03:22:52,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:22:52,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:22:52,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698957785] [2021-12-16 03:22:52,460 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:22:52,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724381060] [2021-12-16 03:22:52,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724381060] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:22:52,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:22:52,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 03:22:52,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145518512] [2021-12-16 03:22:52,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:22:52,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:22:52,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:22:52,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:22:52,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:22:52,462 INFO L87 Difference]: Start difference. First operand 373 states and 533 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-16 03:22:52,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:22:52,728 INFO L93 Difference]: Finished difference Result 683 states and 991 transitions. [2021-12-16 03:22:52,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 03:22:52,728 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 178 [2021-12-16 03:22:52,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:22:52,731 INFO L225 Difference]: With dead ends: 683 [2021-12-16 03:22:52,731 INFO L226 Difference]: Without dead ends: 375 [2021-12-16 03:22:52,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-16 03:22:52,732 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 545 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 2448 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:22:52,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [553 Valid, 2448 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 03:22:52,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-12-16 03:22:52,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2021-12-16 03:22:52,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 232 states have (on average 1.2370689655172413) internal successors, (287), 236 states have internal predecessors, (287), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (138), 114 states have call predecessors, (138), 113 states have call successors, (138) [2021-12-16 03:22:52,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 540 transitions. [2021-12-16 03:22:52,758 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 540 transitions. Word has length 178 [2021-12-16 03:22:52,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:22:52,759 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 540 transitions. [2021-12-16 03:22:52,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-16 03:22:52,759 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 540 transitions. [2021-12-16 03:22:52,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-12-16 03:22:52,760 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:22:52,761 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:22:52,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 03:22:52,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:52,984 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:22:52,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:22:52,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1083469799, now seen corresponding path program 1 times [2021-12-16 03:22:52,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:22:52,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255365640] [2021-12-16 03:22:52,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:52,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:22:53,037 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:22:53,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492750263] [2021-12-16 03:22:53,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:53,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:53,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:22:53,060 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:22:53,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 03:22:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:53,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 2866 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 03:22:53,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:22:53,836 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2021-12-16 03:22:53,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:22:53,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:22:53,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255365640] [2021-12-16 03:22:53,837 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:22:53,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492750263] [2021-12-16 03:22:53,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492750263] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:22:53,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:22:53,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 03:22:53,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962335063] [2021-12-16 03:22:53,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:22:53,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 03:22:53,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:22:53,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 03:22:53,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:22:53,839 INFO L87 Difference]: Start difference. First operand 375 states and 540 transitions. Second operand has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-16 03:22:54,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:22:54,178 INFO L93 Difference]: Finished difference Result 688 states and 1006 transitions. [2021-12-16 03:22:54,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 03:22:54,178 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 201 [2021-12-16 03:22:54,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:22:54,180 INFO L225 Difference]: With dead ends: 688 [2021-12-16 03:22:54,180 INFO L226 Difference]: Without dead ends: 378 [2021-12-16 03:22:54,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-16 03:22:54,182 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 569 mSDsluCounter, 2392 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 03:22:54,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 2814 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 03:22:54,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-12-16 03:22:54,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 376. [2021-12-16 03:22:54,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 233 states have (on average 1.2360515021459229) internal successors, (288), 237 states have internal predecessors, (288), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (138), 114 states have call predecessors, (138), 113 states have call successors, (138) [2021-12-16 03:22:54,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 541 transitions. [2021-12-16 03:22:54,196 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 541 transitions. Word has length 201 [2021-12-16 03:22:54,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:22:54,196 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 541 transitions. [2021-12-16 03:22:54,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-16 03:22:54,197 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 541 transitions. [2021-12-16 03:22:54,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-12-16 03:22:54,198 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:22:54,199 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-16 03:22:54,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-16 03:22:54,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:54,419 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:22:54,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:22:54,420 INFO L85 PathProgramCache]: Analyzing trace with hash 2112387732, now seen corresponding path program 2 times [2021-12-16 03:22:54,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:22:54,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53330038] [2021-12-16 03:22:54,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:54,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:22:54,474 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:22:54,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [970931149] [2021-12-16 03:22:54,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:22:54,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:54,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:22:54,479 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:22:54,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-16 03:22:55,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:22:55,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:22:55,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 3079 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 03:22:55,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:22:55,441 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2021-12-16 03:22:55,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:22:55,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:22:55,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53330038] [2021-12-16 03:22:55,441 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:22:55,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970931149] [2021-12-16 03:22:55,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970931149] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:22:55,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:22:55,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 03:22:55,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930658827] [2021-12-16 03:22:55,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:22:55,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 03:22:55,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:22:55,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 03:22:55,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:22:55,444 INFO L87 Difference]: Start difference. First operand 376 states and 541 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-16 03:22:55,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:22:55,819 INFO L93 Difference]: Finished difference Result 680 states and 990 transitions. [2021-12-16 03:22:55,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 03:22:55,820 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 232 [2021-12-16 03:22:55,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:22:55,822 INFO L225 Difference]: With dead ends: 680 [2021-12-16 03:22:55,822 INFO L226 Difference]: Without dead ends: 378 [2021-12-16 03:22:55,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-12-16 03:22:55,826 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 585 mSDsluCounter, 2753 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 03:22:55,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [589 Valid, 3171 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 03:22:55,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-12-16 03:22:55,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2021-12-16 03:22:55,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 234 states have (on average 1.235042735042735) internal successors, (289), 239 states have internal predecessors, (289), 115 states have call successors, (115), 24 states have call predecessors, (115), 27 states have return successors, (142), 114 states have call predecessors, (142), 113 states have call successors, (142) [2021-12-16 03:22:55,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 546 transitions. [2021-12-16 03:22:55,842 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 546 transitions. Word has length 232 [2021-12-16 03:22:55,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:22:55,842 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 546 transitions. [2021-12-16 03:22:55,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-16 03:22:55,842 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 546 transitions. [2021-12-16 03:22:55,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-12-16 03:22:55,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:22:55,845 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:22:55,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-16 03:22:56,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-16 03:22:56,066 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:22:56,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:22:56,067 INFO L85 PathProgramCache]: Analyzing trace with hash -190475628, now seen corresponding path program 1 times [2021-12-16 03:22:56,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:22:56,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135665490] [2021-12-16 03:22:56,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:56,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:22:56,174 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:22:56,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [443128493] [2021-12-16 03:22:56,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:56,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:56,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:22:56,176 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:22:56,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-16 03:22:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:56,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 3461 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 03:22:56,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:22:57,316 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2021-12-16 03:22:57,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:22:57,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:22:57,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135665490] [2021-12-16 03:22:57,322 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:22:57,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443128493] [2021-12-16 03:22:57,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443128493] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:22:57,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:22:57,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:22:57,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605824905] [2021-12-16 03:22:57,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:22:57,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:22:57,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:22:57,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:22:57,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:22:57,324 INFO L87 Difference]: Start difference. First operand 378 states and 546 transitions. Second operand has 11 states, 10 states have (on average 9.7) internal successors, (97), 9 states have internal predecessors, (97), 6 states have call successors, (28), 4 states have call predecessors, (28), 3 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2021-12-16 03:22:57,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:22:57,771 INFO L93 Difference]: Finished difference Result 682 states and 993 transitions. [2021-12-16 03:22:57,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 03:22:57,771 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.7) internal successors, (97), 9 states have internal predecessors, (97), 6 states have call successors, (28), 4 states have call predecessors, (28), 3 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) Word has length 278 [2021-12-16 03:22:57,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:22:57,774 INFO L225 Difference]: With dead ends: 682 [2021-12-16 03:22:57,774 INFO L226 Difference]: Without dead ends: 378 [2021-12-16 03:22:57,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-12-16 03:22:57,776 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 614 mSDsluCounter, 3103 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 3515 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 03:22:57,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 3515 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 03:22:57,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-12-16 03:22:57,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 376. [2021-12-16 03:22:57,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 233 states have (on average 1.2360515021459229) internal successors, (288), 237 states have internal predecessors, (288), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (136), 114 states have call predecessors, (136), 113 states have call successors, (136) [2021-12-16 03:22:57,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 539 transitions. [2021-12-16 03:22:57,787 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 539 transitions. Word has length 278 [2021-12-16 03:22:57,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:22:57,788 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 539 transitions. [2021-12-16 03:22:57,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.7) internal successors, (97), 9 states have internal predecessors, (97), 6 states have call successors, (28), 4 states have call predecessors, (28), 3 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2021-12-16 03:22:57,788 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 539 transitions. [2021-12-16 03:22:57,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-12-16 03:22:57,790 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:22:57,790 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 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, 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] [2021-12-16 03:22:57,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-16 03:22:58,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-16 03:22:58,003 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:22:58,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:22:58,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1001900126, now seen corresponding path program 1 times [2021-12-16 03:22:58,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:22:58,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843839532] [2021-12-16 03:22:58,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:58,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:22:58,043 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:22:58,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550115807] [2021-12-16 03:22:58,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:22:58,044 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:22:58,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:22:58,065 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:22:58,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-16 03:22:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:22:58,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 2838 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 03:22:58,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:22:58,818 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 185 proven. 3 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-16 03:22:58,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:22:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 25 proven. 12 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-12-16 03:22:59,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:22:59,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843839532] [2021-12-16 03:22:59,353 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:22:59,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550115807] [2021-12-16 03:22:59,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550115807] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:22:59,354 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:22:59,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-12-16 03:22:59,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598692287] [2021-12-16 03:22:59,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:22:59,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-16 03:22:59,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:22:59,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-16 03:22:59,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-12-16 03:22:59,357 INFO L87 Difference]: Start difference. First operand 376 states and 539 transitions. Second operand has 16 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 9 states have call successors, (49), 4 states have call predecessors, (49), 4 states have return successors, (45), 5 states have call predecessors, (45), 9 states have call successors, (45) [2021-12-16 03:22:59,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:22:59,980 INFO L93 Difference]: Finished difference Result 706 states and 1029 transitions. [2021-12-16 03:22:59,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 03:22:59,980 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 9 states have call successors, (49), 4 states have call predecessors, (49), 4 states have return successors, (45), 5 states have call predecessors, (45), 9 states have call successors, (45) Word has length 218 [2021-12-16 03:22:59,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:22:59,983 INFO L225 Difference]: With dead ends: 706 [2021-12-16 03:22:59,983 INFO L226 Difference]: Without dead ends: 395 [2021-12-16 03:22:59,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2021-12-16 03:22:59,985 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 596 mSDsluCounter, 3913 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 4327 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 03:22:59,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 4327 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 03:22:59,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-12-16 03:22:59,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 392. [2021-12-16 03:22:59,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 247 states have (on average 1.242914979757085) internal successors, (307), 251 states have internal predecessors, (307), 116 states have call successors, (116), 24 states have call predecessors, (116), 27 states have return successors, (143), 116 states have call predecessors, (143), 114 states have call successors, (143) [2021-12-16 03:22:59,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 566 transitions. [2021-12-16 03:23:00,000 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 566 transitions. Word has length 218 [2021-12-16 03:23:00,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:00,000 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 566 transitions. [2021-12-16 03:23:00,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 9 states have call successors, (49), 4 states have call predecessors, (49), 4 states have return successors, (45), 5 states have call predecessors, (45), 9 states have call successors, (45) [2021-12-16 03:23:00,001 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 566 transitions. [2021-12-16 03:23:00,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-12-16 03:23:00,003 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:00,003 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:00,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:00,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-16 03:23:00,223 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:00,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:00,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1679261457, now seen corresponding path program 2 times [2021-12-16 03:23:00,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:00,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810947548] [2021-12-16 03:23:00,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:00,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:00,283 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:00,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1293463039] [2021-12-16 03:23:00,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:23:00,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:00,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:00,303 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:23:00,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-16 03:23:00,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:23:00,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:23:00,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 2979 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 03:23:00,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:01,275 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-16 03:23:01,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:01,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:01,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810947548] [2021-12-16 03:23:01,276 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:01,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293463039] [2021-12-16 03:23:01,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293463039] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:01,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:01,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:23:01,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325776956] [2021-12-16 03:23:01,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:01,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:23:01,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:01,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:23:01,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:23:01,277 INFO L87 Difference]: Start difference. First operand 392 states and 566 transitions. Second operand has 11 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 6 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (26), 5 states have call predecessors, (26), 6 states have call successors, (26) [2021-12-16 03:23:02,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:02,036 INFO L93 Difference]: Finished difference Result 721 states and 1053 transitions. [2021-12-16 03:23:02,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 03:23:02,036 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 6 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (26), 5 states have call predecessors, (26), 6 states have call successors, (26) Word has length 233 [2021-12-16 03:23:02,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:02,040 INFO L225 Difference]: With dead ends: 721 [2021-12-16 03:23:02,040 INFO L226 Difference]: Without dead ends: 394 [2021-12-16 03:23:02,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-12-16 03:23:02,042 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 640 mSDsluCounter, 3088 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 3495 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:02,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [663 Valid, 3495 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 03:23:02,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-12-16 03:23:02,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 376. [2021-12-16 03:23:02,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 233 states have (on average 1.2360515021459229) internal successors, (288), 237 states have internal predecessors, (288), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (134), 114 states have call predecessors, (134), 113 states have call successors, (134) [2021-12-16 03:23:02,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 537 transitions. [2021-12-16 03:23:02,057 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 537 transitions. Word has length 233 [2021-12-16 03:23:02,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:02,057 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 537 transitions. [2021-12-16 03:23:02,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 6 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (26), 5 states have call predecessors, (26), 6 states have call successors, (26) [2021-12-16 03:23:02,058 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 537 transitions. [2021-12-16 03:23:02,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-12-16 03:23:02,059 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:02,059 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-16 03:23:02,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-16 03:23:02,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-16 03:23:02,272 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:02,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:02,273 INFO L85 PathProgramCache]: Analyzing trace with hash 473503328, now seen corresponding path program 3 times [2021-12-16 03:23:02,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:02,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504727142] [2021-12-16 03:23:02,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:02,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:02,314 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:02,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [371461108] [2021-12-16 03:23:02,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 03:23:02,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:02,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:02,318 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:23:02,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-16 03:23:02,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-16 03:23:02,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:23:02,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 1889 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 03:23:02,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:03,215 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2021-12-16 03:23:03,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:03,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:03,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504727142] [2021-12-16 03:23:03,215 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:03,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371461108] [2021-12-16 03:23:03,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371461108] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:03,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:03,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:23:03,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181516614] [2021-12-16 03:23:03,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:03,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:23:03,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:03,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:23:03,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:23:03,217 INFO L87 Difference]: Start difference. First operand 376 states and 537 transitions. Second operand has 6 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-16 03:23:03,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:03,373 INFO L93 Difference]: Finished difference Result 671 states and 978 transitions. [2021-12-16 03:23:03,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:23:03,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 248 [2021-12-16 03:23:03,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:03,378 INFO L225 Difference]: With dead ends: 671 [2021-12-16 03:23:03,378 INFO L226 Difference]: Without dead ends: 376 [2021-12-16 03:23:03,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:23:03,381 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 2 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:03,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2215 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:23:03,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-12-16 03:23:03,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2021-12-16 03:23:03,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 233 states have (on average 1.2360515021459229) internal successors, (288), 237 states have internal predecessors, (288), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (133), 114 states have call predecessors, (133), 113 states have call successors, (133) [2021-12-16 03:23:03,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 536 transitions. [2021-12-16 03:23:03,394 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 536 transitions. Word has length 248 [2021-12-16 03:23:03,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:03,394 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 536 transitions. [2021-12-16 03:23:03,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-16 03:23:03,394 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 536 transitions. [2021-12-16 03:23:03,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-12-16 03:23:03,396 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:03,396 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:03,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:03,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-16 03:23:03,612 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:03,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:03,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1995304627, now seen corresponding path program 4 times [2021-12-16 03:23:03,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:03,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871216800] [2021-12-16 03:23:03,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:03,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:03,663 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:03,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [342161788] [2021-12-16 03:23:03,664 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 03:23:03,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:03,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:03,670 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:23:03,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-16 03:23:03,974 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 03:23:03,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:23:03,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 930 conjuncts, 43 conjunts are in the unsatisfiable core [2021-12-16 03:23:03,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:04,457 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 207 proven. 21 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-12-16 03:23:04,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:23:05,045 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2021-12-16 03:23:05,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:05,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871216800] [2021-12-16 03:23:05,046 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:05,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342161788] [2021-12-16 03:23:05,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342161788] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:23:05,046 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:23:05,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 11 [2021-12-16 03:23:05,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366459309] [2021-12-16 03:23:05,047 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:23:05,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:23:05,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:05,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:23:05,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:23:05,048 INFO L87 Difference]: Start difference. First operand 376 states and 536 transitions. Second operand has 11 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 6 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 5 states have call predecessors, (34), 6 states have call successors, (34) [2021-12-16 03:23:05,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:05,382 INFO L93 Difference]: Finished difference Result 651 states and 934 transitions. [2021-12-16 03:23:05,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 03:23:05,382 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 6 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 5 states have call predecessors, (34), 6 states have call successors, (34) Word has length 263 [2021-12-16 03:23:05,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:05,386 INFO L225 Difference]: With dead ends: 651 [2021-12-16 03:23:05,386 INFO L226 Difference]: Without dead ends: 385 [2021-12-16 03:23:05,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 513 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-12-16 03:23:05,387 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 145 mSDsluCounter, 3852 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 4313 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:05,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 4313 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 03:23:05,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-12-16 03:23:05,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 380. [2021-12-16 03:23:05,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 236 states have (on average 1.2330508474576272) internal successors, (291), 240 states have internal predecessors, (291), 115 states have call successors, (115), 25 states have call predecessors, (115), 27 states have return successors, (135), 114 states have call predecessors, (135), 113 states have call successors, (135) [2021-12-16 03:23:05,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 541 transitions. [2021-12-16 03:23:05,401 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 541 transitions. Word has length 263 [2021-12-16 03:23:05,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:05,402 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 541 transitions. [2021-12-16 03:23:05,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 6 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 5 states have call predecessors, (34), 6 states have call successors, (34) [2021-12-16 03:23:05,403 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 541 transitions. [2021-12-16 03:23:05,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-12-16 03:23:05,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:05,404 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:05,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:05,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-16 03:23:05,622 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:05,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:05,623 INFO L85 PathProgramCache]: Analyzing trace with hash 187635755, now seen corresponding path program 1 times [2021-12-16 03:23:05,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:05,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536928502] [2021-12-16 03:23:05,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:05,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:05,684 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:05,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1212333939] [2021-12-16 03:23:05,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:05,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:05,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:05,700 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:23:05,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-16 03:23:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:06,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 3452 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 03:23:06,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:06,828 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2021-12-16 03:23:06,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:06,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:06,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536928502] [2021-12-16 03:23:06,828 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:06,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212333939] [2021-12-16 03:23:06,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212333939] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:06,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:06,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 03:23:06,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616439702] [2021-12-16 03:23:06,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:06,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 03:23:06,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:06,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 03:23:06,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:23:06,829 INFO L87 Difference]: Start difference. First operand 380 states and 541 transitions. Second operand has 10 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 6 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) [2021-12-16 03:23:07,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:07,182 INFO L93 Difference]: Finished difference Result 655 states and 936 transitions. [2021-12-16 03:23:07,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 03:23:07,183 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 6 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) Word has length 286 [2021-12-16 03:23:07,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:07,185 INFO L225 Difference]: With dead ends: 655 [2021-12-16 03:23:07,185 INFO L226 Difference]: Without dead ends: 385 [2021-12-16 03:23:07,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-12-16 03:23:07,186 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 593 mSDsluCounter, 2796 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 3218 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:07,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 3218 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 03:23:07,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-12-16 03:23:07,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 378. [2021-12-16 03:23:07,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 235 states have (on average 1.2340425531914894) internal successors, (290), 238 states have internal predecessors, (290), 115 states have call successors, (115), 25 states have call predecessors, (115), 26 states have return successors, (131), 114 states have call predecessors, (131), 113 states have call successors, (131) [2021-12-16 03:23:07,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 536 transitions. [2021-12-16 03:23:07,197 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 536 transitions. Word has length 286 [2021-12-16 03:23:07,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:07,198 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 536 transitions. [2021-12-16 03:23:07,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 6 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) [2021-12-16 03:23:07,198 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 536 transitions. [2021-12-16 03:23:07,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-12-16 03:23:07,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:07,200 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:07,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:07,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:07,417 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:07,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:07,418 INFO L85 PathProgramCache]: Analyzing trace with hash 954978234, now seen corresponding path program 1 times [2021-12-16 03:23:07,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:07,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848181663] [2021-12-16 03:23:07,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:07,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:07,471 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:07,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974435255] [2021-12-16 03:23:07,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:07,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:07,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:07,488 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:23:07,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-16 03:23:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:08,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 3887 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 03:23:08,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:08,689 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2021-12-16 03:23:08,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:08,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:08,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848181663] [2021-12-16 03:23:08,690 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:08,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974435255] [2021-12-16 03:23:08,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974435255] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:08,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:08,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:23:08,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063490615] [2021-12-16 03:23:08,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:08,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:23:08,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:08,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:23:08,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:23:08,692 INFO L87 Difference]: Start difference. First operand 378 states and 536 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-16 03:23:08,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:08,930 INFO L93 Difference]: Finished difference Result 756 states and 1107 transitions. [2021-12-16 03:23:08,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 03:23:08,955 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 340 [2021-12-16 03:23:08,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:08,957 INFO L225 Difference]: With dead ends: 756 [2021-12-16 03:23:08,957 INFO L226 Difference]: Without dead ends: 414 [2021-12-16 03:23:08,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:23:08,959 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 21 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:08,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 2255 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 03:23:08,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-12-16 03:23:08,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 386. [2021-12-16 03:23:08,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 243 states have (on average 1.2345679012345678) internal successors, (300), 246 states have internal predecessors, (300), 115 states have call successors, (115), 25 states have call predecessors, (115), 26 states have return successors, (131), 114 states have call predecessors, (131), 113 states have call successors, (131) [2021-12-16 03:23:08,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 546 transitions. [2021-12-16 03:23:08,981 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 546 transitions. Word has length 340 [2021-12-16 03:23:08,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:08,982 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 546 transitions. [2021-12-16 03:23:08,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-16 03:23:08,982 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 546 transitions. [2021-12-16 03:23:08,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-12-16 03:23:08,983 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:08,984 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:09,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:09,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-16 03:23:09,195 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:09,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:09,196 INFO L85 PathProgramCache]: Analyzing trace with hash -826197762, now seen corresponding path program 1 times [2021-12-16 03:23:09,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:09,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881195670] [2021-12-16 03:23:09,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:09,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:09,235 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:09,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568800561] [2021-12-16 03:23:09,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:09,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:09,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:09,252 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) [2021-12-16 03:23:09,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-16 03:23:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:09,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 3311 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 03:23:09,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:10,156 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2021-12-16 03:23:10,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:10,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:10,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881195670] [2021-12-16 03:23:10,157 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:10,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568800561] [2021-12-16 03:23:10,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568800561] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:10,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:10,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:23:10,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675663166] [2021-12-16 03:23:10,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:10,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:23:10,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:10,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:23:10,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:23:10,159 INFO L87 Difference]: Start difference. First operand 386 states and 546 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-16 03:23:10,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:10,184 INFO L93 Difference]: Finished difference Result 744 states and 1075 transitions. [2021-12-16 03:23:10,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:23:10,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 280 [2021-12-16 03:23:10,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:10,187 INFO L225 Difference]: With dead ends: 744 [2021-12-16 03:23:10,187 INFO L226 Difference]: Without dead ends: 394 [2021-12-16 03:23:10,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:23:10,189 INFO L933 BasicCegarLoop]: 483 mSDtfsCounter, 3 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:10,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1444 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:23:10,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-12-16 03:23:10,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 390. [2021-12-16 03:23:10,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 247 states have (on average 1.2307692307692308) internal successors, (304), 250 states have internal predecessors, (304), 115 states have call successors, (115), 25 states have call predecessors, (115), 26 states have return successors, (131), 114 states have call predecessors, (131), 113 states have call successors, (131) [2021-12-16 03:23:10,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 550 transitions. [2021-12-16 03:23:10,201 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 550 transitions. Word has length 280 [2021-12-16 03:23:10,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:10,202 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 550 transitions. [2021-12-16 03:23:10,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-16 03:23:10,202 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 550 transitions. [2021-12-16 03:23:10,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-12-16 03:23:10,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:10,203 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:10,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:10,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-16 03:23:10,425 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:10,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:10,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1474880122, now seen corresponding path program 1 times [2021-12-16 03:23:10,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:10,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432599219] [2021-12-16 03:23:10,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:10,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:10,465 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:10,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1968771885] [2021-12-16 03:23:10,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:10,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:10,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:10,467 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) [2021-12-16 03:23:10,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-16 03:23:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:11,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 3291 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 03:23:11,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:11,509 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 214 proven. 3 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-16 03:23:11,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:23:12,049 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 50 proven. 28 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2021-12-16 03:23:12,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:12,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432599219] [2021-12-16 03:23:12,050 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:12,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968771885] [2021-12-16 03:23:12,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968771885] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:23:12,050 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:23:12,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-12-16 03:23:12,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989641961] [2021-12-16 03:23:12,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:23:12,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-16 03:23:12,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:12,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-16 03:23:12,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2021-12-16 03:23:12,051 INFO L87 Difference]: Start difference. First operand 390 states and 550 transitions. Second operand has 20 states, 18 states have (on average 7.333333333333333) internal successors, (132), 16 states have internal predecessors, (132), 11 states have call successors, (46), 6 states have call predecessors, (46), 4 states have return successors, (41), 7 states have call predecessors, (41), 11 states have call successors, (41) [2021-12-16 03:23:12,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:12,667 INFO L93 Difference]: Finished difference Result 731 states and 1041 transitions. [2021-12-16 03:23:12,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 03:23:12,668 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 7.333333333333333) internal successors, (132), 16 states have internal predecessors, (132), 11 states have call successors, (46), 6 states have call predecessors, (46), 4 states have return successors, (41), 7 states have call predecessors, (41), 11 states have call successors, (41) Word has length 280 [2021-12-16 03:23:12,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:12,670 INFO L225 Difference]: With dead ends: 731 [2021-12-16 03:23:12,670 INFO L226 Difference]: Without dead ends: 415 [2021-12-16 03:23:12,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2021-12-16 03:23:12,672 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 683 mSDsluCounter, 4560 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 4964 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:12,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 4964 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 03:23:12,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-12-16 03:23:12,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 412. [2021-12-16 03:23:12,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 267 states have (on average 1.2359550561797752) internal successors, (330), 270 states have internal predecessors, (330), 116 states have call successors, (116), 25 states have call predecessors, (116), 27 states have return successors, (136), 116 states have call predecessors, (136), 114 states have call successors, (136) [2021-12-16 03:23:12,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 582 transitions. [2021-12-16 03:23:12,689 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 582 transitions. Word has length 280 [2021-12-16 03:23:12,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:12,690 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 582 transitions. [2021-12-16 03:23:12,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 7.333333333333333) internal successors, (132), 16 states have internal predecessors, (132), 11 states have call successors, (46), 6 states have call predecessors, (46), 4 states have return successors, (41), 7 states have call predecessors, (41), 11 states have call successors, (41) [2021-12-16 03:23:12,690 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 582 transitions. [2021-12-16 03:23:12,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-12-16 03:23:12,692 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:12,692 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:12,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:12,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-16 03:23:12,914 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:12,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:12,914 INFO L85 PathProgramCache]: Analyzing trace with hash -641737782, now seen corresponding path program 1 times [2021-12-16 03:23:12,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:12,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517772397] [2021-12-16 03:23:12,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:12,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:12,960 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:12,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615157414] [2021-12-16 03:23:12,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:12,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:12,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:12,962 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) [2021-12-16 03:23:13,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-16 03:23:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:13,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 3855 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 03:23:13,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:14,174 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2021-12-16 03:23:14,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:14,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:14,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517772397] [2021-12-16 03:23:14,175 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:14,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615157414] [2021-12-16 03:23:14,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615157414] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:14,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:14,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:23:14,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431050797] [2021-12-16 03:23:14,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:14,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:23:14,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:14,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:23:14,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:23:14,178 INFO L87 Difference]: Start difference. First operand 412 states and 582 transitions. Second operand has 6 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-16 03:23:14,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:14,300 INFO L93 Difference]: Finished difference Result 764 states and 1095 transitions. [2021-12-16 03:23:14,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:23:14,301 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 340 [2021-12-16 03:23:14,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:14,304 INFO L225 Difference]: With dead ends: 764 [2021-12-16 03:23:14,304 INFO L226 Difference]: Without dead ends: 454 [2021-12-16 03:23:14,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:23:14,306 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 82 mSDsluCounter, 2004 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 2537 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:14,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 2537 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:23:14,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-12-16 03:23:14,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 415. [2021-12-16 03:23:14,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 270 states have (on average 1.2333333333333334) internal successors, (333), 273 states have internal predecessors, (333), 116 states have call successors, (116), 25 states have call predecessors, (116), 27 states have return successors, (136), 116 states have call predecessors, (136), 114 states have call successors, (136) [2021-12-16 03:23:14,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 585 transitions. [2021-12-16 03:23:14,323 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 585 transitions. Word has length 340 [2021-12-16 03:23:14,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:14,324 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 585 transitions. [2021-12-16 03:23:14,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-16 03:23:14,324 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 585 transitions. [2021-12-16 03:23:14,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2021-12-16 03:23:14,325 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:14,326 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:14,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:14,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:14,551 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:14,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:14,551 INFO L85 PathProgramCache]: Analyzing trace with hash -350495910, now seen corresponding path program 1 times [2021-12-16 03:23:14,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:14,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877995700] [2021-12-16 03:23:14,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:14,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:14,596 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:14,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291516928] [2021-12-16 03:23:14,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:14,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:14,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:14,624 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) [2021-12-16 03:23:14,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-16 03:23:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:15,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 3633 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-16 03:23:15,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:15,728 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 368 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2021-12-16 03:23:15,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:15,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:15,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877995700] [2021-12-16 03:23:15,728 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:15,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291516928] [2021-12-16 03:23:15,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291516928] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:15,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:15,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-16 03:23:15,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034305346] [2021-12-16 03:23:15,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:15,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-16 03:23:15,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:15,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-16 03:23:15,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-16 03:23:15,730 INFO L87 Difference]: Start difference. First operand 415 states and 585 transitions. Second operand has 13 states, 12 states have (on average 9.333333333333334) internal successors, (112), 11 states have internal predecessors, (112), 7 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (31), 6 states have call predecessors, (31), 7 states have call successors, (31) [2021-12-16 03:23:16,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:16,255 INFO L93 Difference]: Finished difference Result 758 states and 1076 transitions. [2021-12-16 03:23:16,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 03:23:16,256 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 9.333333333333334) internal successors, (112), 11 states have internal predecessors, (112), 7 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (31), 6 states have call predecessors, (31), 7 states have call successors, (31) Word has length 324 [2021-12-16 03:23:16,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:16,258 INFO L225 Difference]: With dead ends: 758 [2021-12-16 03:23:16,258 INFO L226 Difference]: Without dead ends: 417 [2021-12-16 03:23:16,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-12-16 03:23:16,260 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 687 mSDsluCounter, 3742 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 4138 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:16,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [706 Valid, 4138 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 03:23:16,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-12-16 03:23:16,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 393. [2021-12-16 03:23:16,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 250 states have (on average 1.228) internal successors, (307), 253 states have internal predecessors, (307), 115 states have call successors, (115), 25 states have call predecessors, (115), 26 states have return successors, (129), 114 states have call predecessors, (129), 113 states have call successors, (129) [2021-12-16 03:23:16,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 551 transitions. [2021-12-16 03:23:16,308 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 551 transitions. Word has length 324 [2021-12-16 03:23:16,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:16,308 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 551 transitions. [2021-12-16 03:23:16,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 9.333333333333334) internal successors, (112), 11 states have internal predecessors, (112), 7 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (31), 6 states have call predecessors, (31), 7 states have call successors, (31) [2021-12-16 03:23:16,309 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 551 transitions. [2021-12-16 03:23:16,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-12-16 03:23:16,310 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:16,310 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:16,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:16,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:16,545 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:16,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:16,546 INFO L85 PathProgramCache]: Analyzing trace with hash 302701920, now seen corresponding path program 1 times [2021-12-16 03:23:16,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:16,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816264848] [2021-12-16 03:23:16,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:16,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:16,589 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:16,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013428433] [2021-12-16 03:23:16,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:16,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:16,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:16,612 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) [2021-12-16 03:23:16,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-16 03:23:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:17,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 3359 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 03:23:17,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:17,608 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 270 proven. 3 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-16 03:23:17,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:23:18,136 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 50 proven. 9 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2021-12-16 03:23:18,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:18,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816264848] [2021-12-16 03:23:18,136 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:18,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013428433] [2021-12-16 03:23:18,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013428433] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:23:18,136 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:23:18,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-12-16 03:23:18,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010244474] [2021-12-16 03:23:18,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:23:18,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-16 03:23:18,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:18,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-16 03:23:18,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-12-16 03:23:18,138 INFO L87 Difference]: Start difference. First operand 393 states and 551 transitions. Second operand has 18 states, 16 states have (on average 8.0) internal successors, (128), 16 states have internal predecessors, (128), 11 states have call successors, (51), 4 states have call predecessors, (51), 4 states have return successors, (47), 7 states have call predecessors, (47), 11 states have call successors, (47) [2021-12-16 03:23:18,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:18,720 INFO L93 Difference]: Finished difference Result 703 states and 992 transitions. [2021-12-16 03:23:18,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 03:23:18,721 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 8.0) internal successors, (128), 16 states have internal predecessors, (128), 11 states have call successors, (51), 4 states have call predecessors, (51), 4 states have return successors, (47), 7 states have call predecessors, (47), 11 states have call successors, (47) Word has length 287 [2021-12-16 03:23:18,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:18,723 INFO L225 Difference]: With dead ends: 703 [2021-12-16 03:23:18,724 INFO L226 Difference]: Without dead ends: 423 [2021-12-16 03:23:18,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2021-12-16 03:23:18,726 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 1014 mSDsluCounter, 3902 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 4313 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:18,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1035 Valid, 4313 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 03:23:18,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-12-16 03:23:18,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 412. [2021-12-16 03:23:18,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 268 states have (on average 1.2350746268656716) internal successors, (331), 270 states have internal predecessors, (331), 116 states have call successors, (116), 25 states have call predecessors, (116), 26 states have return successors, (130), 116 states have call predecessors, (130), 114 states have call successors, (130) [2021-12-16 03:23:18,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 577 transitions. [2021-12-16 03:23:18,743 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 577 transitions. Word has length 287 [2021-12-16 03:23:18,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:18,743 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 577 transitions. [2021-12-16 03:23:18,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 8.0) internal successors, (128), 16 states have internal predecessors, (128), 11 states have call successors, (51), 4 states have call predecessors, (51), 4 states have return successors, (47), 7 states have call predecessors, (47), 11 states have call successors, (47) [2021-12-16 03:23:18,744 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 577 transitions. [2021-12-16 03:23:18,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-12-16 03:23:18,745 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:18,745 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:18,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:18,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-16 03:23:18,963 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:18,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:18,964 INFO L85 PathProgramCache]: Analyzing trace with hash 469386945, now seen corresponding path program 2 times [2021-12-16 03:23:18,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:18,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197736146] [2021-12-16 03:23:18,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:18,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:19,003 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:19,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987687059] [2021-12-16 03:23:19,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:23:19,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:19,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:19,005 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) [2021-12-16 03:23:19,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-16 03:23:19,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:23:19,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:23:19,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 3500 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-16 03:23:19,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:20,171 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2021-12-16 03:23:20,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:20,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:20,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197736146] [2021-12-16 03:23:20,172 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:20,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987687059] [2021-12-16 03:23:20,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987687059] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:20,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:20,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 03:23:20,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090805219] [2021-12-16 03:23:20,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:20,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 03:23:20,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:20,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 03:23:20,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:23:20,174 INFO L87 Difference]: Start difference. First operand 412 states and 577 transitions. Second operand has 12 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 7 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 6 states have call predecessors, (28), 7 states have call successors, (28) [2021-12-16 03:23:20,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:20,722 INFO L93 Difference]: Finished difference Result 718 states and 1011 transitions. [2021-12-16 03:23:20,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 03:23:20,724 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 7 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 6 states have call predecessors, (28), 7 states have call successors, (28) Word has length 302 [2021-12-16 03:23:20,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:20,727 INFO L225 Difference]: With dead ends: 718 [2021-12-16 03:23:20,727 INFO L226 Difference]: Without dead ends: 419 [2021-12-16 03:23:20,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-12-16 03:23:20,728 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 670 mSDsluCounter, 3450 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 3853 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:20,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [691 Valid, 3853 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 03:23:20,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-12-16 03:23:20,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 390. [2021-12-16 03:23:20,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 248 states have (on average 1.2298387096774193) internal successors, (305), 250 states have internal predecessors, (305), 115 states have call successors, (115), 25 states have call predecessors, (115), 25 states have return successors, (125), 114 states have call predecessors, (125), 113 states have call successors, (125) [2021-12-16 03:23:20,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 545 transitions. [2021-12-16 03:23:20,742 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 545 transitions. Word has length 302 [2021-12-16 03:23:20,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:20,743 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 545 transitions. [2021-12-16 03:23:20,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 7 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 6 states have call predecessors, (28), 7 states have call successors, (28) [2021-12-16 03:23:20,743 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 545 transitions. [2021-12-16 03:23:20,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-12-16 03:23:20,744 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:20,745 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:20,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:20,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-16 03:23:20,959 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:20,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:20,960 INFO L85 PathProgramCache]: Analyzing trace with hash 599052898, now seen corresponding path program 3 times [2021-12-16 03:23:20,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:20,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581183270] [2021-12-16 03:23:20,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:20,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:21,016 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:21,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2109361699] [2021-12-16 03:23:21,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 03:23:21,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:21,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:21,030 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) [2021-12-16 03:23:21,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-16 03:23:21,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-16 03:23:21,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:23:21,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 2030 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-16 03:23:21,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:22,050 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2021-12-16 03:23:22,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:23:22,558 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 72 proven. 3 refuted. 0 times theorem prover too weak. 647 trivial. 0 not checked. [2021-12-16 03:23:22,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:22,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581183270] [2021-12-16 03:23:22,559 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:22,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109361699] [2021-12-16 03:23:22,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109361699] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:23:22,559 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:23:22,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2021-12-16 03:23:22,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740649986] [2021-12-16 03:23:22,559 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:23:22,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:23:22,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:22,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:23:22,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:23:22,560 INFO L87 Difference]: Start difference. First operand 390 states and 545 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-16 03:23:22,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:22,693 INFO L93 Difference]: Finished difference Result 700 states and 996 transitions. [2021-12-16 03:23:22,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:23:22,693 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) Word has length 317 [2021-12-16 03:23:22,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:22,695 INFO L225 Difference]: With dead ends: 700 [2021-12-16 03:23:22,696 INFO L226 Difference]: Without dead ends: 392 [2021-12-16 03:23:22,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 626 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:23:22,697 INFO L933 BasicCegarLoop]: 469 mSDtfsCounter, 22 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 3189 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:22,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 3189 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:23:22,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-12-16 03:23:22,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2021-12-16 03:23:22,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 250 states have (on average 1.228) internal successors, (307), 251 states have internal predecessors, (307), 115 states have call successors, (115), 26 states have call predecessors, (115), 25 states have return successors, (124), 114 states have call predecessors, (124), 113 states have call successors, (124) [2021-12-16 03:23:22,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 546 transitions. [2021-12-16 03:23:22,707 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 546 transitions. Word has length 317 [2021-12-16 03:23:22,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:22,708 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 546 transitions. [2021-12-16 03:23:22,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-16 03:23:22,708 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 546 transitions. [2021-12-16 03:23:22,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2021-12-16 03:23:22,710 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:22,711 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:22,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:22,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:22,930 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:22,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:22,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1414259784, now seen corresponding path program 2 times [2021-12-16 03:23:22,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:22,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865989215] [2021-12-16 03:23:22,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:22,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:22,977 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:22,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751419967] [2021-12-16 03:23:22,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:23:22,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:22,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:22,998 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) [2021-12-16 03:23:23,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-16 03:23:23,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:23:23,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:23:23,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 3915 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 03:23:23,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:24,389 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2021-12-16 03:23:24,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:24,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:24,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865989215] [2021-12-16 03:23:24,402 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:24,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751419967] [2021-12-16 03:23:24,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751419967] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:24,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:24,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 03:23:24,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470117662] [2021-12-16 03:23:24,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:24,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 03:23:24,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:24,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 03:23:24,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:23:24,409 INFO L87 Difference]: Start difference. First operand 392 states and 546 transitions. Second operand has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 9 states have internal predecessors, (94), 6 states have call successors, (34), 5 states have call predecessors, (34), 3 states have return successors, (29), 5 states have call predecessors, (29), 6 states have call successors, (29) [2021-12-16 03:23:24,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:24,887 INFO L93 Difference]: Finished difference Result 719 states and 1015 transitions. [2021-12-16 03:23:24,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 03:23:24,888 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 9 states have internal predecessors, (94), 6 states have call successors, (34), 5 states have call predecessors, (34), 3 states have return successors, (29), 5 states have call predecessors, (29), 6 states have call successors, (29) Word has length 354 [2021-12-16 03:23:24,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:24,891 INFO L225 Difference]: With dead ends: 719 [2021-12-16 03:23:24,891 INFO L226 Difference]: Without dead ends: 409 [2021-12-16 03:23:24,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2021-12-16 03:23:24,893 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 603 mSDsluCounter, 3499 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 3906 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:24,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 3906 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 03:23:24,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-12-16 03:23:24,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2021-12-16 03:23:24,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 257 states have (on average 1.2256809338521402) internal successors, (315), 258 states have internal predecessors, (315), 124 states have call successors, (124), 27 states have call predecessors, (124), 26 states have return successors, (133), 123 states have call predecessors, (133), 122 states have call successors, (133) [2021-12-16 03:23:24,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 572 transitions. [2021-12-16 03:23:24,905 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 572 transitions. Word has length 354 [2021-12-16 03:23:24,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:24,905 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 572 transitions. [2021-12-16 03:23:24,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 9 states have internal predecessors, (94), 6 states have call successors, (34), 5 states have call predecessors, (34), 3 states have return successors, (29), 5 states have call predecessors, (29), 6 states have call successors, (29) [2021-12-16 03:23:24,906 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 572 transitions. [2021-12-16 03:23:24,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2021-12-16 03:23:24,907 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:24,907 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:24,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:25,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:25,108 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:25,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:25,108 INFO L85 PathProgramCache]: Analyzing trace with hash -927015807, now seen corresponding path program 1 times [2021-12-16 03:23:25,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:25,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923842370] [2021-12-16 03:23:25,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:25,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:25,174 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:25,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [620728351] [2021-12-16 03:23:25,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:25,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:25,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:25,176 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) [2021-12-16 03:23:25,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-16 03:23:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:26,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 4056 conjuncts, 107 conjunts are in the unsatisfiable core [2021-12-16 03:23:26,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:26,495 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4141 (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_4141))) is different from true [2021-12-16 03:23:26,626 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4142 (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_4142))) is different from true [2021-12-16 03:23:27,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 680 proven. 2 refuted. 0 times theorem prover too weak. 372 trivial. 17 not checked. [2021-12-16 03:23:27,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:23:27,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:27,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923842370] [2021-12-16 03:23:27,600 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:27,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620728351] [2021-12-16 03:23:27,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620728351] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:23:27,601 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:23:27,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-12-16 03:23:27,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622747469] [2021-12-16 03:23:27,601 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-16 03:23:27,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-16 03:23:27,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:27,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-16 03:23:27,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=745, Unknown=40, NotChecked=114, Total=992 [2021-12-16 03:23:27,602 INFO L87 Difference]: Start difference. First operand 409 states and 572 transitions. Second operand has 26 states, 25 states have (on average 6.0) internal successors, (150), 23 states have internal predecessors, (150), 12 states have call successors, (42), 5 states have call predecessors, (42), 8 states have return successors, (37), 12 states have call predecessors, (37), 12 states have call successors, (37) [2021-12-16 03:23:27,841 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4142 (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_4142))) (exists ((v_ArrVal_4141 (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_4141)))) is different from true [2021-12-16 03:23:27,852 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4142 (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_4142))) (let ((.cse0 (= 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)))) (or (and (not |c_aws_array_list_is_valid_#t~short88|) (not .cse0)) (and |c_aws_array_list_is_valid_#t~short88| .cse0))) (exists ((v_ArrVal_4141 (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_4141)))) is different from true [2021-12-16 03:23:28,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:28,036 INFO L93 Difference]: Finished difference Result 843 states and 1214 transitions. [2021-12-16 03:23:28,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-16 03:23:28,037 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 6.0) internal successors, (150), 23 states have internal predecessors, (150), 12 states have call successors, (42), 5 states have call predecessors, (42), 8 states have return successors, (37), 12 states have call predecessors, (37), 12 states have call successors, (37) Word has length 369 [2021-12-16 03:23:28,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:28,040 INFO L225 Difference]: With dead ends: 843 [2021-12-16 03:23:28,040 INFO L226 Difference]: Without dead ends: 499 [2021-12-16 03:23:28,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 540 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=802, Unknown=42, NotChecked=244, Total=1190 [2021-12-16 03:23:28,042 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 53 mSDsluCounter, 5111 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 5613 SdHoareTripleChecker+Invalid, 3322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3074 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:28,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 5613 Invalid, 3322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 246 Invalid, 0 Unknown, 3074 Unchecked, 0.3s Time] [2021-12-16 03:23:28,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-12-16 03:23:28,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 476. [2021-12-16 03:23:28,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 311 states have (on average 1.2379421221864952) internal successors, (385), 312 states have internal predecessors, (385), 132 states have call successors, (132), 32 states have call predecessors, (132), 31 states have return successors, (171), 131 states have call predecessors, (171), 130 states have call successors, (171) [2021-12-16 03:23:28,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 688 transitions. [2021-12-16 03:23:28,060 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 688 transitions. Word has length 369 [2021-12-16 03:23:28,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:28,060 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 688 transitions. [2021-12-16 03:23:28,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 6.0) internal successors, (150), 23 states have internal predecessors, (150), 12 states have call successors, (42), 5 states have call predecessors, (42), 8 states have return successors, (37), 12 states have call predecessors, (37), 12 states have call successors, (37) [2021-12-16 03:23:28,061 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 688 transitions. [2021-12-16 03:23:28,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-12-16 03:23:28,062 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:28,063 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:28,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:28,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-16 03:23:28,277 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:28,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:28,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1869117007, now seen corresponding path program 1 times [2021-12-16 03:23:28,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:28,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859101556] [2021-12-16 03:23:28,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:28,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:28,320 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:28,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653474457] [2021-12-16 03:23:28,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:28,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:28,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:28,336 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) [2021-12-16 03:23:28,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-16 03:23:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:29,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 3777 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 03:23:29,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:29,555 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2021-12-16 03:23:29,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:29,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:29,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859101556] [2021-12-16 03:23:29,556 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:29,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653474457] [2021-12-16 03:23:29,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653474457] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:29,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:29,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:23:29,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011718962] [2021-12-16 03:23:29,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:29,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:23:29,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:29,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:23:29,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:23:29,557 INFO L87 Difference]: Start difference. First operand 476 states and 688 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-12-16 03:23:29,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:29,587 INFO L93 Difference]: Finished difference Result 916 states and 1383 transitions. [2021-12-16 03:23:29,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:23:29,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 332 [2021-12-16 03:23:29,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:29,591 INFO L225 Difference]: With dead ends: 916 [2021-12-16 03:23:29,591 INFO L226 Difference]: Without dead ends: 476 [2021-12-16 03:23:29,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:23:29,594 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 7 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1450 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 [2021-12-16 03:23:29,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1450 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:23:29,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-12-16 03:23:29,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 476. [2021-12-16 03:23:29,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 311 states have (on average 1.234726688102894) internal successors, (384), 312 states have internal predecessors, (384), 132 states have call successors, (132), 32 states have call predecessors, (132), 31 states have return successors, (171), 131 states have call predecessors, (171), 130 states have call successors, (171) [2021-12-16 03:23:29,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 687 transitions. [2021-12-16 03:23:29,612 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 687 transitions. Word has length 332 [2021-12-16 03:23:29,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:29,613 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 687 transitions. [2021-12-16 03:23:29,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-12-16 03:23:29,613 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 687 transitions. [2021-12-16 03:23:29,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-12-16 03:23:29,615 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:29,615 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:29,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:29,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-16 03:23:29,837 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:29,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:29,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1577758099, now seen corresponding path program 1 times [2021-12-16 03:23:29,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:29,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720793774] [2021-12-16 03:23:29,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:29,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:29,880 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:29,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [215685709] [2021-12-16 03:23:29,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:29,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:29,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:29,882 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) [2021-12-16 03:23:29,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-16 03:23:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:30,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 4059 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 03:23:30,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:31,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 584 proven. 0 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2021-12-16 03:23:31,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:31,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:31,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720793774] [2021-12-16 03:23:31,167 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:31,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215685709] [2021-12-16 03:23:31,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215685709] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:31,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:31,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:23:31,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48702900] [2021-12-16 03:23:31,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:31,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:23:31,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:31,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:23:31,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:23:31,169 INFO L87 Difference]: Start difference. First operand 476 states and 687 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-16 03:23:31,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:31,358 INFO L93 Difference]: Finished difference Result 916 states and 1381 transitions. [2021-12-16 03:23:31,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:23:31,359 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 373 [2021-12-16 03:23:31,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:31,362 INFO L225 Difference]: With dead ends: 916 [2021-12-16 03:23:31,362 INFO L226 Difference]: Without dead ends: 476 [2021-12-16 03:23:31,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:23:31,365 INFO L933 BasicCegarLoop]: 496 mSDtfsCounter, 7 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:31,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1864 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:23:31,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-12-16 03:23:31,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 476. [2021-12-16 03:23:31,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 311 states have (on average 1.2315112540192925) internal successors, (383), 312 states have internal predecessors, (383), 132 states have call successors, (132), 32 states have call predecessors, (132), 31 states have return successors, (171), 131 states have call predecessors, (171), 130 states have call successors, (171) [2021-12-16 03:23:31,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 686 transitions. [2021-12-16 03:23:31,383 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 686 transitions. Word has length 373 [2021-12-16 03:23:31,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:31,383 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 686 transitions. [2021-12-16 03:23:31,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-16 03:23:31,384 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 686 transitions. [2021-12-16 03:23:31,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-12-16 03:23:31,386 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:31,386 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:31,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:31,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-16 03:23:31,611 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:31,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:31,612 INFO L85 PathProgramCache]: Analyzing trace with hash -261224561, now seen corresponding path program 1 times [2021-12-16 03:23:31,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:31,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229174501] [2021-12-16 03:23:31,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:31,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:31,656 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:31,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1734909271] [2021-12-16 03:23:31,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:31,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:31,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:31,658 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) [2021-12-16 03:23:31,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-16 03:23:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:32,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 3785 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-16 03:23:32,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:32,628 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2021-12-16 03:23:32,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:32,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:32,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229174501] [2021-12-16 03:23:32,630 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:32,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734909271] [2021-12-16 03:23:32,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734909271] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:32,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:32,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:23:32,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453143450] [2021-12-16 03:23:32,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:32,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:23:32,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:32,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:23:32,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:23:32,632 INFO L87 Difference]: Start difference. First operand 476 states and 686 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-16 03:23:32,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:32,679 INFO L93 Difference]: Finished difference Result 908 states and 1336 transitions. [2021-12-16 03:23:32,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:23:32,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 332 [2021-12-16 03:23:32,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:32,682 INFO L225 Difference]: With dead ends: 908 [2021-12-16 03:23:32,682 INFO L226 Difference]: Without dead ends: 510 [2021-12-16 03:23:32,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:23:32,685 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 8 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1990 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 [2021-12-16 03:23:32,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1990 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:23:32,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-12-16 03:23:32,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 490. [2021-12-16 03:23:32,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 325 states have (on average 1.2307692307692308) internal successors, (400), 326 states have internal predecessors, (400), 132 states have call successors, (132), 32 states have call predecessors, (132), 31 states have return successors, (171), 131 states have call predecessors, (171), 130 states have call successors, (171) [2021-12-16 03:23:32,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 703 transitions. [2021-12-16 03:23:32,718 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 703 transitions. Word has length 332 [2021-12-16 03:23:32,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:32,718 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 703 transitions. [2021-12-16 03:23:32,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-16 03:23:32,719 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 703 transitions. [2021-12-16 03:23:32,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-12-16 03:23:32,720 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:32,721 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:32,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:32,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-16 03:23:32,921 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:32,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:32,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1040962225, now seen corresponding path program 1 times [2021-12-16 03:23:32,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:32,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351407393] [2021-12-16 03:23:32,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:32,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:33,003 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:33,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182002365] [2021-12-16 03:23:33,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:33,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:33,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:33,005 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) [2021-12-16 03:23:33,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-16 03:23:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:33,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 3797 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 03:23:33,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:34,134 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2021-12-16 03:23:34,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:34,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:34,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351407393] [2021-12-16 03:23:34,135 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:34,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182002365] [2021-12-16 03:23:34,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182002365] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:34,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:34,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:23:34,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245031517] [2021-12-16 03:23:34,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:34,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:23:34,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:34,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:23:34,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:23:34,136 INFO L87 Difference]: Start difference. First operand 490 states and 703 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-16 03:23:34,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:34,161 INFO L93 Difference]: Finished difference Result 936 states and 1374 transitions. [2021-12-16 03:23:34,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:23:34,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 336 [2021-12-16 03:23:34,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:34,164 INFO L225 Difference]: With dead ends: 936 [2021-12-16 03:23:34,164 INFO L226 Difference]: Without dead ends: 482 [2021-12-16 03:23:34,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:23:34,167 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 2 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1447 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 [2021-12-16 03:23:34,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1447 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:23:34,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-12-16 03:23:34,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 476. [2021-12-16 03:23:34,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 311 states have (on average 1.2154340836012862) internal successors, (378), 312 states have internal predecessors, (378), 132 states have call successors, (132), 32 states have call predecessors, (132), 31 states have return successors, (171), 131 states have call predecessors, (171), 130 states have call successors, (171) [2021-12-16 03:23:34,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 681 transitions. [2021-12-16 03:23:34,181 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 681 transitions. Word has length 336 [2021-12-16 03:23:34,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:34,181 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 681 transitions. [2021-12-16 03:23:34,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-16 03:23:34,182 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 681 transitions. [2021-12-16 03:23:34,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2021-12-16 03:23:34,183 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:34,184 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:34,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:34,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-16 03:23:34,404 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:34,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:34,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1456424531, now seen corresponding path program 1 times [2021-12-16 03:23:34,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:34,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523381568] [2021-12-16 03:23:34,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:34,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:34,447 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:34,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1646815004] [2021-12-16 03:23:34,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:34,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:34,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:34,448 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:23:34,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-16 03:23:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:35,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 4071 conjuncts, 75 conjunts are in the unsatisfiable core [2021-12-16 03:23:35,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:36,314 INFO L388 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 [2021-12-16 03:23:36,317 INFO L388 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 [2021-12-16 03:23:36,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1077 backedges. 503 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2021-12-16 03:23:36,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:36,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:36,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523381568] [2021-12-16 03:23:36,611 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:36,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646815004] [2021-12-16 03:23:36,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646815004] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:36,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:36,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-16 03:23:36,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74798408] [2021-12-16 03:23:36,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:36,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-16 03:23:36,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:36,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-16 03:23:36,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-12-16 03:23:36,616 INFO L87 Difference]: Start difference. First operand 476 states and 681 transitions. Second operand has 17 states, 17 states have (on average 7.352941176470588) internal successors, (125), 15 states have internal predecessors, (125), 7 states have call successors, (37), 3 states have call predecessors, (37), 5 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2021-12-16 03:23:39,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:39,200 INFO L93 Difference]: Finished difference Result 984 states and 1436 transitions. [2021-12-16 03:23:39,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-16 03:23:39,201 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.352941176470588) internal successors, (125), 15 states have internal predecessors, (125), 7 states have call successors, (37), 3 states have call predecessors, (37), 5 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) Word has length 375 [2021-12-16 03:23:39,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:39,205 INFO L225 Difference]: With dead ends: 984 [2021-12-16 03:23:39,205 INFO L226 Difference]: Without dead ends: 581 [2021-12-16 03:23:39,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 356 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2021-12-16 03:23:39,208 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 541 mSDsluCounter, 2880 mSDsCounter, 0 mSdLazyCounter, 3684 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 3320 SdHoareTripleChecker+Invalid, 4044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 319 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:39,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 3320 Invalid, 4044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3684 Invalid, 0 Unknown, 319 Unchecked, 2.3s Time] [2021-12-16 03:23:39,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-12-16 03:23:39,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 526. [2021-12-16 03:23:39,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 351 states have (on average 1.205128205128205) internal successors, (423), 352 states have internal predecessors, (423), 137 states have call successors, (137), 34 states have call predecessors, (137), 36 states have return successors, (214), 139 states have call predecessors, (214), 135 states have call successors, (214) [2021-12-16 03:23:39,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 774 transitions. [2021-12-16 03:23:39,226 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 774 transitions. Word has length 375 [2021-12-16 03:23:39,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:39,226 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 774 transitions. [2021-12-16 03:23:39,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.352941176470588) internal successors, (125), 15 states have internal predecessors, (125), 7 states have call successors, (37), 3 states have call predecessors, (37), 5 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2021-12-16 03:23:39,226 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 774 transitions. [2021-12-16 03:23:39,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-12-16 03:23:39,228 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:39,228 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 5, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:39,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:39,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:39,443 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:39,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:39,444 INFO L85 PathProgramCache]: Analyzing trace with hash 329969274, now seen corresponding path program 1 times [2021-12-16 03:23:39,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:39,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703527984] [2021-12-16 03:23:39,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:39,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:39,487 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:39,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738641917] [2021-12-16 03:23:39,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:39,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:39,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:39,488 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:23:39,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-16 03:23:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:40,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 3809 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 03:23:40,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 475 proven. 0 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2021-12-16 03:23:40,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:23:40,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:40,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703527984] [2021-12-16 03:23:40,788 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:40,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738641917] [2021-12-16 03:23:40,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738641917] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:23:40,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:23:40,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:23:40,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093159671] [2021-12-16 03:23:40,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:23:40,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:23:40,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:40,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:23:40,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:23:40,789 INFO L87 Difference]: Start difference. First operand 526 states and 774 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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) [2021-12-16 03:23:40,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:40,944 INFO L93 Difference]: Finished difference Result 990 states and 1520 transitions. [2021-12-16 03:23:40,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:23:40,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 340 [2021-12-16 03:23:40,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:40,949 INFO L225 Difference]: With dead ends: 990 [2021-12-16 03:23:40,949 INFO L226 Difference]: Without dead ends: 500 [2021-12-16 03:23:40,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:23:40,953 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 13 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:40,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 1834 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:23:40,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-12-16 03:23:40,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 499. [2021-12-16 03:23:40,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 329 states have (on average 1.2066869300911853) internal successors, (397), 330 states have internal predecessors, (397), 135 states have call successors, (135), 33 states have call predecessors, (135), 33 states have return successors, (185), 135 states have call predecessors, (185), 133 states have call successors, (185) [2021-12-16 03:23:40,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 717 transitions. [2021-12-16 03:23:40,983 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 717 transitions. Word has length 340 [2021-12-16 03:23:40,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:40,984 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 717 transitions. [2021-12-16 03:23:40,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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) [2021-12-16 03:23:40,984 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 717 transitions. [2021-12-16 03:23:40,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-12-16 03:23:40,987 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:40,988 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:41,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:41,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-12-16 03:23:41,203 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:41,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:41,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1828946698, now seen corresponding path program 1 times [2021-12-16 03:23:41,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:41,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762303166] [2021-12-16 03:23:41,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:41,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:41,244 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:41,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [498652679] [2021-12-16 03:23:41,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:41,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:41,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:41,246 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:23:41,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-12-16 03:23:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:23:42,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 3786 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-16 03:23:42,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:23:42,527 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 515 proven. 11 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-12-16 03:23:42,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:23:43,795 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 52 proven. 82 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2021-12-16 03:23:43,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:23:43,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762303166] [2021-12-16 03:23:43,796 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:23:43,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498652679] [2021-12-16 03:23:43,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498652679] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:23:43,796 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:23:43,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 27 [2021-12-16 03:23:43,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161393391] [2021-12-16 03:23:43,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:23:43,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-16 03:23:43,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:23:43,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-16 03:23:43,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=642, Unknown=0, NotChecked=0, Total=702 [2021-12-16 03:23:43,798 INFO L87 Difference]: Start difference. First operand 499 states and 717 transitions. Second operand has 27 states, 24 states have (on average 6.708333333333333) internal successors, (161), 18 states have internal predecessors, (161), 7 states have call successors, (44), 3 states have call predecessors, (44), 9 states have return successors, (45), 12 states have call predecessors, (45), 6 states have call successors, (45) [2021-12-16 03:23:44,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:23:44,421 INFO L93 Difference]: Finished difference Result 996 states and 1478 transitions. [2021-12-16 03:23:44,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 03:23:44,421 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 6.708333333333333) internal successors, (161), 18 states have internal predecessors, (161), 7 states have call successors, (44), 3 states have call predecessors, (44), 9 states have return successors, (45), 12 states have call predecessors, (45), 6 states have call successors, (45) Word has length 338 [2021-12-16 03:23:44,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:23:44,425 INFO L225 Difference]: With dead ends: 996 [2021-12-16 03:23:44,426 INFO L226 Difference]: Without dead ends: 609 [2021-12-16 03:23:44,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 648 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2021-12-16 03:23:44,429 INFO L933 BasicCegarLoop]: 483 mSDtfsCounter, 32 mSDsluCounter, 8589 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 9072 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 03:23:44,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 9072 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 03:23:44,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2021-12-16 03:23:44,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 575. [2021-12-16 03:23:44,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 396 states have (on average 1.2045454545454546) internal successors, (477), 400 states have internal predecessors, (477), 138 states have call successors, (138), 33 states have call predecessors, (138), 39 states have return successors, (250), 141 states have call predecessors, (250), 136 states have call successors, (250) [2021-12-16 03:23:44,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 865 transitions. [2021-12-16 03:23:44,457 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 865 transitions. Word has length 338 [2021-12-16 03:23:44,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:23:44,457 INFO L470 AbstractCegarLoop]: Abstraction has 575 states and 865 transitions. [2021-12-16 03:23:44,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 6.708333333333333) internal successors, (161), 18 states have internal predecessors, (161), 7 states have call successors, (44), 3 states have call predecessors, (44), 9 states have return successors, (45), 12 states have call predecessors, (45), 6 states have call successors, (45) [2021-12-16 03:23:44,458 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 865 transitions. [2021-12-16 03:23:44,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-12-16 03:23:44,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:23:44,461 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:23:44,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-12-16 03:23:44,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:44,686 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:23:44,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:23:44,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1243371206, now seen corresponding path program 2 times [2021-12-16 03:23:44,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:23:44,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073626249] [2021-12-16 03:23:44,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:23:44,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:23:44,734 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:23:44,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320600318] [2021-12-16 03:23:44,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:23:44,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:23:44,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:23:44,736 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:23:44,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process