./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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_down_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 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 13:38:55,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 13:38:55,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 13:38:55,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 13:38:55,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 13:38:55,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 13:38:55,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 13:38:55,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 13:38:55,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 13:38:55,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 13:38:55,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 13:38:55,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 13:38:55,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 13:38:55,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 13:38:55,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 13:38:55,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 13:38:55,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 13:38:55,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 13:38:55,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 13:38:55,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 13:38:55,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 13:38:55,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 13:38:55,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 13:38:55,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 13:38:55,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 13:38:55,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 13:38:55,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 13:38:55,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 13:38:55,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 13:38:55,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 13:38:55,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 13:38:55,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 13:38:55,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 13:38:55,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 13:38:55,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 13:38:55,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 13:38:55,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 13:38:55,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 13:38:55,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 13:38:55,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 13:38:55,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 13:38:55,881 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 13:38:55,915 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 13:38:55,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 13:38:55,917 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 13:38:55,917 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 13:38:55,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 13:38:55,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 13:38:55,919 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 13:38:55,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 13:38:55,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 13:38:55,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 13:38:55,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 13:38:55,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 13:38:55,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 13:38:55,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 13:38:55,921 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 13:38:55,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 13:38:55,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 13:38:55,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 13:38:55,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 13:38:55,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:38:55,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 13:38:55,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 13:38:55,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 13:38:55,923 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 13:38:55,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 13:38:55,923 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 13:38:55,923 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 13:38:55,923 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 13:38:55,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 13:38:55,924 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 [2021-11-05 13:38:56,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 13:38:56,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 13:38:56,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 13:38:56,214 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 13:38:56,215 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 13:38:56,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2021-11-05 13:38:56,273 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5f5980a6/8440a188e1d4485f91374a5802ae1ef0/FLAG1a519610d [2021-11-05 13:38:57,006 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 13:38:57,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2021-11-05 13:38:57,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5f5980a6/8440a188e1d4485f91374a5802ae1ef0/FLAG1a519610d [2021-11-05 13:38:57,123 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5f5980a6/8440a188e1d4485f91374a5802ae1ef0 [2021-11-05 13:38:57,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 13:38:57,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 13:38:57,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 13:38:57,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 13:38:57,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 13:38:57,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:38:57" (1/1) ... [2021-11-05 13:38:57,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10534cf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:38:57, skipping insertion in model container [2021-11-05 13:38:57,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:38:57" (1/1) ... [2021-11-05 13:38:57,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 13:38:57,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 13:38:57,443 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2021-11-05 13:38:57,449 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2021-11-05 13:38:57,463 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:38:57,466 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:38:58,005 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,006 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,007 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,007 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,010 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,028 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,029 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,034 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,035 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,036 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,037 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,038 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,038 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,287 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:38:58,288 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:38:58,289 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:38:58,290 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:38:58,291 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:38:58,291 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:38:58,292 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:38:58,292 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:38:58,293 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:38:58,293 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:38:58,392 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:38:58,409 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,409 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,412 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,420 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,467 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,468 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,468 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,469 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,470 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,471 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,471 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,472 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,473 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,473 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,473 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,473 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,474 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,480 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,481 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,481 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,481 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,484 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,485 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,496 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,497 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,498 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:38:58,565 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 13:38:58,577 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2021-11-05 13:38:58,577 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2021-11-05 13:38:58,579 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:38:58,579 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:38:58,603 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,603 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,603 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,604 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,604 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,608 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,609 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,610 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,610 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,611 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,611 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,611 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,612 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,635 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:38:58,636 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:38:58,637 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:38:58,637 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:38:58,638 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:38:58,638 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:38:58,638 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:38:58,639 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:38:58,639 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:38:58,640 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:38:58,655 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:38:58,678 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,679 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,680 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,683 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,697 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,698 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,698 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,698 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,698 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,699 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,699 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,699 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,700 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,700 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,700 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,700 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,701 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,701 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,702 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,702 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,702 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,704 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,704 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,708 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,708 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,709 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:38:58,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:38:58,902 INFO L208 MainTranslator]: Completed translation [2021-11-05 13:38:58,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:38:58 WrapperNode [2021-11-05 13:38:58,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 13:38:58,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 13:38:58,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 13:38:58,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 13:38:58,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:38:58" (1/1) ... [2021-11-05 13:38:58,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:38:58" (1/1) ... [2021-11-05 13:38:59,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 13:38:59,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 13:38:59,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 13:38:59,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 13:38:59,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:38:58" (1/1) ... [2021-11-05 13:38:59,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:38:58" (1/1) ... [2021-11-05 13:38:59,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:38:58" (1/1) ... [2021-11-05 13:38:59,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:38:58" (1/1) ... [2021-11-05 13:38:59,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:38:58" (1/1) ... [2021-11-05 13:38:59,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:38:58" (1/1) ... [2021-11-05 13:38:59,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:38:58" (1/1) ... [2021-11-05 13:38:59,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 13:38:59,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 13:38:59,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 13:38:59,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 13:38:59,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:38:58" (1/1) ... [2021-11-05 13:38:59,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:38:59,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:38:59,544 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 13:38:59,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 13:38:59,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 13:38:59,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 13:38:59,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 13:38:59,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 13:38:59,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 13:38:59,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 13:38:59,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 13:38:59,582 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-05 13:38:59,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 13:38:59,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 13:38:59,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 13:38:59,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 13:39:12,104 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 13:39:12,105 INFO L299 CfgBuilder]: Removed 924 assume(true) statements. [2021-11-05 13:39:12,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:39:12 BoogieIcfgContainer [2021-11-05 13:39:12,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 13:39:12,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 13:39:12,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 13:39:12,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 13:39:12,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 01:38:57" (1/3) ... [2021-11-05 13:39:12,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4090ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:39:12, skipping insertion in model container [2021-11-05 13:39:12,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:38:58" (2/3) ... [2021-11-05 13:39:12,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4090ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:39:12, skipping insertion in model container [2021-11-05 13:39:12,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:39:12" (3/3) ... [2021-11-05 13:39:12,118 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_down_harness.i [2021-11-05 13:39:12,127 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 13:39:12,128 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-11-05 13:39:12,187 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 13:39:12,197 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 13:39:12,197 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-11-05 13:39:12,239 INFO L276 IsEmpty]: Start isEmpty. Operand has 1139 states, 1108 states have (on average 1.4214801444043321) internal successors, (1575), 1138 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:12,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 13:39:12,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:39:12,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:39:12,251 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:39:12,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:39:12,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1715157979, now seen corresponding path program 1 times [2021-11-05 13:39:12,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:39:12,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488124538] [2021-11-05 13:39:12,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:39:12,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:39:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:39:12,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:39:12,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:39:12,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488124538] [2021-11-05 13:39:12,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488124538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:39:12,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:39:12,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 13:39:12,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567828232] [2021-11-05 13:39:12,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:39:12,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 13:39:12,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:39:12,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 13:39:12,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:39:12,837 INFO L87 Difference]: Start difference. First operand has 1139 states, 1108 states have (on average 1.4214801444043321) internal successors, (1575), 1138 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:12,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:39:12,931 INFO L93 Difference]: Finished difference Result 2266 states and 3137 transitions. [2021-11-05 13:39:12,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 13:39:12,933 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-05 13:39:12,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:39:12,952 INFO L225 Difference]: With dead ends: 2266 [2021-11-05 13:39:12,952 INFO L226 Difference]: Without dead ends: 1134 [2021-11-05 13:39:12,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:39:12,964 INFO L933 BasicCegarLoop]: 1463 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.29ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 13:39:12,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 8.29ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 13:39:12,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2021-11-05 13:39:13,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1134. [2021-11-05 13:39:13,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1104 states have (on average 1.3206521739130435) internal successors, (1458), 1133 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:13,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1458 transitions. [2021-11-05 13:39:13,055 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1458 transitions. Word has length 53 [2021-11-05 13:39:13,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:39:13,055 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 1458 transitions. [2021-11-05 13:39:13,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:13,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1458 transitions. [2021-11-05 13:39:13,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 13:39:13,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:39:13,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:39:13,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 13:39:13,064 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:39:13,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:39:13,065 INFO L85 PathProgramCache]: Analyzing trace with hash -799846195, now seen corresponding path program 1 times [2021-11-05 13:39:13,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:39:13,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222875706] [2021-11-05 13:39:13,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:39:13,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:39:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:39:13,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:39:13,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:39:13,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222875706] [2021-11-05 13:39:13,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222875706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:39:13,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:39:13,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 13:39:13,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451498792] [2021-11-05 13:39:13,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:39:13,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 13:39:13,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:39:13,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 13:39:13,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 13:39:13,325 INFO L87 Difference]: Start difference. First operand 1134 states and 1458 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:13,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:39:13,404 INFO L93 Difference]: Finished difference Result 2248 states and 2895 transitions. [2021-11-05 13:39:13,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 13:39:13,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-05 13:39:13,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:39:13,409 INFO L225 Difference]: With dead ends: 2248 [2021-11-05 13:39:13,409 INFO L226 Difference]: Without dead ends: 1136 [2021-11-05 13:39:13,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 13:39:13,411 INFO L933 BasicCegarLoop]: 1457 mSDtfsCounter, 0 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2905 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.34ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.80ms IncrementalHoareTripleChecker+Time [2021-11-05 13:39:13,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2905 Invalid, 13 Unknown, 0 Unchecked, 7.34ms Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 40.80ms Time] [2021-11-05 13:39:13,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2021-11-05 13:39:13,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1136. [2021-11-05 13:39:13,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1106 states have (on average 1.3200723327305606) internal successors, (1460), 1135 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:13,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1460 transitions. [2021-11-05 13:39:13,445 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1460 transitions. Word has length 53 [2021-11-05 13:39:13,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:39:13,445 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1460 transitions. [2021-11-05 13:39:13,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:13,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1460 transitions. [2021-11-05 13:39:13,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 13:39:13,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:39:13,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:39:13,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 13:39:13,447 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:39:13,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:39:13,448 INFO L85 PathProgramCache]: Analyzing trace with hash 571961103, now seen corresponding path program 1 times [2021-11-05 13:39:13,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:39:13,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722922771] [2021-11-05 13:39:13,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:39:13,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:39:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:39:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:39:13,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:39:13,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722922771] [2021-11-05 13:39:13,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722922771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:39:13,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:39:13,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:39:13,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85424847] [2021-11-05 13:39:13,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:39:13,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:39:13,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:39:13,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:39:13,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:39:13,765 INFO L87 Difference]: Start difference. First operand 1136 states and 1460 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:13,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:39:13,980 INFO L93 Difference]: Finished difference Result 2503 states and 3212 transitions. [2021-11-05 13:39:13,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:39:13,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-05 13:39:13,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:39:13,986 INFO L225 Difference]: With dead ends: 2503 [2021-11-05 13:39:13,986 INFO L226 Difference]: Without dead ends: 1455 [2021-11-05 13:39:13,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.78ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:39:13,989 INFO L933 BasicCegarLoop]: 1434 mSDtfsCounter, 1833 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 139.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 2571 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.70ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 161.24ms IncrementalHoareTripleChecker+Time [2021-11-05 13:39:13,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1833 Valid, 2571 Invalid, 45 Unknown, 0 Unchecked, 6.70ms Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 161.24ms Time] [2021-11-05 13:39:13,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-11-05 13:39:14,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1136. [2021-11-05 13:39:14,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1106 states have (on average 1.317359855334539) internal successors, (1457), 1135 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:14,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1457 transitions. [2021-11-05 13:39:14,015 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1457 transitions. Word has length 53 [2021-11-05 13:39:14,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:39:14,016 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1457 transitions. [2021-11-05 13:39:14,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:14,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1457 transitions. [2021-11-05 13:39:14,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-05 13:39:14,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:39:14,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:39:14,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 13:39:14,021 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:39:14,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:39:14,022 INFO L85 PathProgramCache]: Analyzing trace with hash 834729775, now seen corresponding path program 1 times [2021-11-05 13:39:14,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:39:14,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569209860] [2021-11-05 13:39:14,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:39:14,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:39:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:39:14,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:39:14,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:39:14,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569209860] [2021-11-05 13:39:14,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569209860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:39:14,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:39:14,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:39:14,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962674223] [2021-11-05 13:39:14,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:39:14,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:39:14,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:39:14,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:39:14,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:39:14,406 INFO L87 Difference]: Start difference. First operand 1136 states and 1457 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:15,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:39:15,481 INFO L93 Difference]: Finished difference Result 2589 states and 3316 transitions. [2021-11-05 13:39:15,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:39:15,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-05 13:39:15,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:39:15,487 INFO L225 Difference]: With dead ends: 2589 [2021-11-05 13:39:15,487 INFO L226 Difference]: Without dead ends: 1509 [2021-11-05 13:39:15,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 162.62ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:39:15,490 INFO L933 BasicCegarLoop]: 1413 mSDtfsCounter, 2769 mSDsluCounter, 1608 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 816.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2769 SdHoareTripleChecker+Valid, 3021 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.56ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 892.59ms IncrementalHoareTripleChecker+Time [2021-11-05 13:39:15,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2769 Valid, 3021 Invalid, 240 Unknown, 0 Unchecked, 10.56ms Time], IncrementalHoareTripleChecker [13 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 892.59ms Time] [2021-11-05 13:39:15,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2021-11-05 13:39:15,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1136. [2021-11-05 13:39:15,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1106 states have (on average 1.3146473779385173) internal successors, (1454), 1135 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:15,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1454 transitions. [2021-11-05 13:39:15,520 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1454 transitions. Word has length 61 [2021-11-05 13:39:15,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:39:15,521 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1454 transitions. [2021-11-05 13:39:15,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:15,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1454 transitions. [2021-11-05 13:39:15,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-05 13:39:15,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:39:15,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:39:15,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 13:39:15,523 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:39:15,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:39:15,523 INFO L85 PathProgramCache]: Analyzing trace with hash -2045544657, now seen corresponding path program 1 times [2021-11-05 13:39:15,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:39:15,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812605738] [2021-11-05 13:39:15,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:39:15,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:39:15,602 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:39:15,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1447794610] [2021-11-05 13:39:15,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:39:15,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:39:15,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:39:15,612 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:39:15,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 13:39:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:39:16,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 13:39:16,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:39:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:39:16,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:39:16,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:39:16,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812605738] [2021-11-05 13:39:16,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:39:16,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447794610] [2021-11-05 13:39:16,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447794610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:39:16,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:39:16,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:39:16,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003323870] [2021-11-05 13:39:16,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:39:16,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:39:16,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:39:16,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:39:16,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:39:16,999 INFO L87 Difference]: Start difference. First operand 1136 states and 1454 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:18,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:39:18,094 INFO L93 Difference]: Finished difference Result 3297 states and 4202 transitions. [2021-11-05 13:39:18,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 13:39:18,095 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-05 13:39:18,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:39:18,103 INFO L225 Difference]: With dead ends: 3297 [2021-11-05 13:39:18,103 INFO L226 Difference]: Without dead ends: 2248 [2021-11-05 13:39:18,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 175.86ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-05 13:39:18,106 INFO L933 BasicCegarLoop]: 1358 mSDtfsCounter, 8025 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 762.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8025 SdHoareTripleChecker+Valid, 3570 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.84ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 854.01ms IncrementalHoareTripleChecker+Time [2021-11-05 13:39:18,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8025 Valid, 3570 Invalid, 247 Unknown, 0 Unchecked, 16.84ms Time], IncrementalHoareTripleChecker [17 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 854.01ms Time] [2021-11-05 13:39:18,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2021-11-05 13:39:18,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 1136. [2021-11-05 13:39:18,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1106 states have (on average 1.3119349005424954) internal successors, (1451), 1135 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:18,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1451 transitions. [2021-11-05 13:39:18,146 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1451 transitions. Word has length 77 [2021-11-05 13:39:18,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:39:18,146 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1451 transitions. [2021-11-05 13:39:18,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:18,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1451 transitions. [2021-11-05 13:39:18,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-05 13:39:18,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:39:18,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:39:18,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-05 13:39:18,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:39:18,361 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:39:18,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:39:18,362 INFO L85 PathProgramCache]: Analyzing trace with hash 324665997, now seen corresponding path program 1 times [2021-11-05 13:39:18,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:39:18,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665798414] [2021-11-05 13:39:18,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:39:18,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:39:18,443 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:39:18,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [269596683] [2021-11-05 13:39:18,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:39:18,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:39:18,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:39:18,445 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:39:18,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 13:39:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:39:19,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 2788 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 13:39:19,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:39:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:39:19,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:39:19,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:39:19,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665798414] [2021-11-05 13:39:19,860 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:39:19,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269596683] [2021-11-05 13:39:19,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269596683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:39:19,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:39:19,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:39:19,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143010569] [2021-11-05 13:39:19,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:39:19,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:39:19,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:39:19,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:39:19,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:39:19,861 INFO L87 Difference]: Start difference. First operand 1136 states and 1451 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:22,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:39:22,295 INFO L93 Difference]: Finished difference Result 3313 states and 4220 transitions. [2021-11-05 13:39:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 13:39:22,295 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-05 13:39:22,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:39:22,303 INFO L225 Difference]: With dead ends: 3313 [2021-11-05 13:39:22,303 INFO L226 Difference]: Without dead ends: 2248 [2021-11-05 13:39:22,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 280.07ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-05 13:39:22,306 INFO L933 BasicCegarLoop]: 1325 mSDtfsCounter, 8248 mSDsluCounter, 3105 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1933.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8248 SdHoareTripleChecker+Valid, 4430 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.56ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2094.22ms IncrementalHoareTripleChecker+Time [2021-11-05 13:39:22,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8248 Valid, 4430 Invalid, 613 Unknown, 0 Unchecked, 19.56ms Time], IncrementalHoareTripleChecker [42 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 2094.22ms Time] [2021-11-05 13:39:22,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2021-11-05 13:39:22,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 1136. [2021-11-05 13:39:22,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1106 states have (on average 1.3092224231464737) internal successors, (1448), 1135 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:22,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1448 transitions. [2021-11-05 13:39:22,344 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1448 transitions. Word has length 101 [2021-11-05 13:39:22,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:39:22,344 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1448 transitions. [2021-11-05 13:39:22,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:22,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1448 transitions. [2021-11-05 13:39:22,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-05 13:39:22,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:39:22,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:39:22,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-05 13:39:22,558 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,SelfDestructingSolverStorable5 [2021-11-05 13:39:22,559 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:39:22,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:39:22,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1191929715, now seen corresponding path program 1 times [2021-11-05 13:39:22,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:39:22,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466086863] [2021-11-05 13:39:22,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:39:22,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:39:22,643 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:39:22,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [229711386] [2021-11-05 13:39:22,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:39:22,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:39:22,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:39:22,645 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:39:22,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 13:39:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:39:23,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 2978 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-05 13:39:23,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:39:24,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:39:24,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:39:24,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:39:24,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466086863] [2021-11-05 13:39:24,189 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:39:24,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229711386] [2021-11-05 13:39:24,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229711386] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:39:24,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:39:24,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:39:24,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569617969] [2021-11-05 13:39:24,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:39:24,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:39:24,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:39:24,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:39:24,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:39:24,192 INFO L87 Difference]: Start difference. First operand 1136 states and 1448 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:25,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:39:25,653 INFO L93 Difference]: Finished difference Result 2246 states and 2871 transitions. [2021-11-05 13:39:25,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 13:39:25,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-05 13:39:25,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:39:25,659 INFO L225 Difference]: With dead ends: 2246 [2021-11-05 13:39:25,659 INFO L226 Difference]: Without dead ends: 1284 [2021-11-05 13:39:25,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 143.25ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-05 13:39:25,662 INFO L933 BasicCegarLoop]: 1384 mSDtfsCounter, 3419 mSDsluCounter, 2451 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1184.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3419 SdHoareTripleChecker+Valid, 3835 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.15ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1294.51ms IncrementalHoareTripleChecker+Time [2021-11-05 13:39:25,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3419 Valid, 3835 Invalid, 458 Unknown, 0 Unchecked, 9.15ms Time], IncrementalHoareTripleChecker [16 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 1294.51ms Time] [2021-11-05 13:39:25,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2021-11-05 13:39:25,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1136. [2021-11-05 13:39:25,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1106 states have (on average 1.3047016274864376) internal successors, (1443), 1135 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:25,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1443 transitions. [2021-11-05 13:39:25,699 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1443 transitions. Word has length 117 [2021-11-05 13:39:25,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:39:25,700 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1443 transitions. [2021-11-05 13:39:25,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:25,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1443 transitions. [2021-11-05 13:39:25,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-05 13:39:25,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:39:25,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:39:25,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-05 13:39:25,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:39:25,915 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:39:25,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:39:25,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1113366613, now seen corresponding path program 1 times [2021-11-05 13:39:25,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:39:25,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713790003] [2021-11-05 13:39:25,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:39:25,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:39:25,999 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:39:26,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21200230] [2021-11-05 13:39:26,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:39:26,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:39:26,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:39:26,001 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:39:26,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 13:39:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:39:26,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 3168 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 13:39:26,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:39:27,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:39:27,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:39:27,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:39:27,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713790003] [2021-11-05 13:39:27,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:39:27,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21200230] [2021-11-05 13:39:27,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21200230] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:39:27,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:39:27,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:39:27,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614066669] [2021-11-05 13:39:27,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:39:27,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:39:27,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:39:27,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:39:27,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:39:27,462 INFO L87 Difference]: Start difference. First operand 1136 states and 1443 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:29,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:39:31,636 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:39:33,773 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:39:38,750 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-05 13:39:42,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:39:42,562 INFO L93 Difference]: Finished difference Result 3108 states and 3945 transitions. [2021-11-05 13:39:42,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 13:39:42,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-05 13:39:42,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:39:42,571 INFO L225 Difference]: With dead ends: 3108 [2021-11-05 13:39:42,571 INFO L226 Difference]: Without dead ends: 2049 [2021-11-05 13:39:42,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 352.99ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-05 13:39:42,575 INFO L933 BasicCegarLoop]: 2116 mSDtfsCounter, 1103 mSDsluCounter, 6823 mSDsCounter, 0 mSdLazyCounter, 2051 mSolverCounterSat, 43 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13853.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 8939 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.22ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2051 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14711.38ms IncrementalHoareTripleChecker+Time [2021-11-05 13:39:42,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 8939 Invalid, 2098 Unknown, 0 Unchecked, 22.22ms Time], IncrementalHoareTripleChecker [43 Valid, 2051 Invalid, 4 Unknown, 0 Unchecked, 14711.38ms Time] [2021-11-05 13:39:42,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2021-11-05 13:39:42,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 1160. [2021-11-05 13:39:42,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 1130 states have (on average 1.3035398230088495) internal successors, (1473), 1159 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:42,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1473 transitions. [2021-11-05 13:39:42,633 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1473 transitions. Word has length 133 [2021-11-05 13:39:42,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:39:42,634 INFO L470 AbstractCegarLoop]: Abstraction has 1160 states and 1473 transitions. [2021-11-05 13:39:42,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:42,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1473 transitions. [2021-11-05 13:39:42,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-05 13:39:42,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:39:42,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:39:42,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-05 13:39:42,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:39:42,859 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:39:42,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:39:42,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1316278763, now seen corresponding path program 1 times [2021-11-05 13:39:42,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:39:42,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773431739] [2021-11-05 13:39:42,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:39:42,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:39:42,942 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:39:42,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1545392136] [2021-11-05 13:39:42,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:39:42,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:39:42,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:39:42,944 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:39:42,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-05 13:39:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:39:43,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 3162 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 13:39:43,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:39:44,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:39:44,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:39:44,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:39:44,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773431739] [2021-11-05 13:39:44,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:39:44,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545392136] [2021-11-05 13:39:44,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545392136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:39:44,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:39:44,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:39:44,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125416502] [2021-11-05 13:39:44,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:39:44,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:39:44,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:39:44,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:39:44,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:39:44,019 INFO L87 Difference]: Start difference. First operand 1160 states and 1473 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:44,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:39:44,256 INFO L93 Difference]: Finished difference Result 2261 states and 2874 transitions. [2021-11-05 13:39:44,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:39:44,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-05 13:39:44,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:39:44,260 INFO L225 Difference]: With dead ends: 2261 [2021-11-05 13:39:44,261 INFO L226 Difference]: Without dead ends: 1184 [2021-11-05 13:39:44,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.15ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:39:44,263 INFO L933 BasicCegarLoop]: 1423 mSDtfsCounter, 18 mSDsluCounter, 2816 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 171.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 4239 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.33ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 187.19ms IncrementalHoareTripleChecker+Time [2021-11-05 13:39:44,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 4239 Invalid, 93 Unknown, 0 Unchecked, 2.33ms Time], IncrementalHoareTripleChecker [21 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 187.19ms Time] [2021-11-05 13:39:44,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2021-11-05 13:39:44,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1172. [2021-11-05 13:39:44,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1142 states have (on average 1.3003502626970227) internal successors, (1485), 1171 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:44,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1485 transitions. [2021-11-05 13:39:44,304 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1485 transitions. Word has length 133 [2021-11-05 13:39:44,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:39:44,305 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 1485 transitions. [2021-11-05 13:39:44,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:44,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1485 transitions. [2021-11-05 13:39:44,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-05 13:39:44,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:39:44,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:39:44,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-05 13:39:44,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:39:44,519 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:39:44,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:39:44,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1076039017, now seen corresponding path program 1 times [2021-11-05 13:39:44,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:39:44,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203539372] [2021-11-05 13:39:44,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:39:44,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:39:44,590 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:39:44,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [725045243] [2021-11-05 13:39:44,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:39:44,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:39:44,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:39:44,592 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:39:44,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-05 13:39:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:39:45,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 3157 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-05 13:39:45,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:39:46,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:39:46,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:39:46,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:39:46,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203539372] [2021-11-05 13:39:46,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:39:46,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725045243] [2021-11-05 13:39:46,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725045243] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:39:46,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:39:46,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 13:39:46,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486723240] [2021-11-05 13:39:46,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:39:46,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 13:39:46,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:39:46,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 13:39:46,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-05 13:39:46,740 INFO L87 Difference]: Start difference. First operand 1172 states and 1485 transitions. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:39:48,788 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:40:02,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:40:02,994 INFO L93 Difference]: Finished difference Result 7948 states and 9984 transitions. [2021-11-05 13:40:02,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-05 13:40:02,995 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-05 13:40:02,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:40:03,016 INFO L225 Difference]: With dead ends: 7948 [2021-11-05 13:40:03,017 INFO L226 Difference]: Without dead ends: 6868 [2021-11-05 13:40:03,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 1893.88ms TimeCoverageRelationStatistics Valid=369, Invalid=1353, Unknown=0, NotChecked=0, Total=1722 [2021-11-05 13:40:03,020 INFO L933 BasicCegarLoop]: 3288 mSDtfsCounter, 11247 mSDsluCounter, 25071 mSDsCounter, 0 mSdLazyCounter, 4593 mSolverCounterSat, 197 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13235.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11247 SdHoareTripleChecker+Valid, 28359 SdHoareTripleChecker+Invalid, 4791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 68.88ms SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 4593 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14174.98ms IncrementalHoareTripleChecker+Time [2021-11-05 13:40:03,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11247 Valid, 28359 Invalid, 4791 Unknown, 0 Unchecked, 68.88ms Time], IncrementalHoareTripleChecker [197 Valid, 4593 Invalid, 1 Unknown, 0 Unchecked, 14174.98ms Time] [2021-11-05 13:40:03,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6868 states. [2021-11-05 13:40:03,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6868 to 1253. [2021-11-05 13:40:03,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 1223 states have (on average 1.3000817661488144) internal successors, (1590), 1252 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:40:03,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1590 transitions. [2021-11-05 13:40:03,099 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1590 transitions. Word has length 133 [2021-11-05 13:40:03,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:40:03,100 INFO L470 AbstractCegarLoop]: Abstraction has 1253 states and 1590 transitions. [2021-11-05 13:40:03,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:40:03,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1590 transitions. [2021-11-05 13:40:03,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-05 13:40:03,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:40:03,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:40:03,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-05 13:40:03,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:40:03,316 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:40:03,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:40:03,316 INFO L85 PathProgramCache]: Analyzing trace with hash 785505495, now seen corresponding path program 1 times [2021-11-05 13:40:03,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:40:03,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243287198] [2021-11-05 13:40:03,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:03,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:40:03,411 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:40:03,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075546644] [2021-11-05 13:40:03,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:03,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:40:03,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:40:03,413 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:40:03,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-05 13:40:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:40:04,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 3147 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 13:40:04,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:40:04,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:40:04,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:40:04,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:40:04,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243287198] [2021-11-05 13:40:04,604 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:40:04,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075546644] [2021-11-05 13:40:04,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075546644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:40:04,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:40:04,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:40:04,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320033361] [2021-11-05 13:40:04,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:40:04,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:40:04,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:40:04,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:40:04,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:40:04,606 INFO L87 Difference]: Start difference. First operand 1253 states and 1590 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:40:06,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:40:06,298 INFO L93 Difference]: Finished difference Result 2655 states and 3400 transitions. [2021-11-05 13:40:06,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:40:06,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-11-05 13:40:06,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:40:06,303 INFO L225 Difference]: With dead ends: 2655 [2021-11-05 13:40:06,303 INFO L226 Difference]: Without dead ends: 1457 [2021-11-05 13:40:06,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.02ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:40:06,306 INFO L933 BasicCegarLoop]: 1589 mSDtfsCounter, 306 mSDsluCounter, 2294 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1455.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 3883 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.41ms SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1600.36ms IncrementalHoareTripleChecker+Time [2021-11-05 13:40:06,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 3883 Invalid, 791 Unknown, 0 Unchecked, 6.41ms Time], IncrementalHoareTripleChecker [165 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 1600.36ms Time] [2021-11-05 13:40:06,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2021-11-05 13:40:06,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1331. [2021-11-05 13:40:06,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1331 states, 1301 states have (on average 1.2797847809377403) internal successors, (1665), 1330 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:40:06,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1665 transitions. [2021-11-05 13:40:06,360 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1665 transitions. Word has length 133 [2021-11-05 13:40:06,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:40:06,361 INFO L470 AbstractCegarLoop]: Abstraction has 1331 states and 1665 transitions. [2021-11-05 13:40:06,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:40:06,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1665 transitions. [2021-11-05 13:40:06,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-05 13:40:06,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:40:06,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:40:06,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-05 13:40:06,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:40:06,584 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:40:06,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:40:06,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1918895115, now seen corresponding path program 1 times [2021-11-05 13:40:06,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:40:06,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837658113] [2021-11-05 13:40:06,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:06,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:40:06,655 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:40:06,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1778578548] [2021-11-05 13:40:06,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:06,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:40:06,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:40:06,658 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) [2021-11-05 13:40:06,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-05 13:40:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:40:07,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 3172 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-05 13:40:07,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:40:07,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:40:07,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:40:07,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:40:07,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837658113] [2021-11-05 13:40:07,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:40:07,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778578548] [2021-11-05 13:40:07,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778578548] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:40:07,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:40:07,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:40:07,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031916408] [2021-11-05 13:40:07,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:40:07,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:40:07,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:40:07,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:40:07,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:40:07,822 INFO L87 Difference]: Start difference. First operand 1331 states and 1665 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:40:09,863 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:40:12,000 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:40:18,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:40:18,966 INFO L93 Difference]: Finished difference Result 3482 states and 4300 transitions. [2021-11-05 13:40:18,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:40:18,967 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-05 13:40:18,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:40:18,972 INFO L225 Difference]: With dead ends: 3482 [2021-11-05 13:40:18,972 INFO L226 Difference]: Without dead ends: 2207 [2021-11-05 13:40:18,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 143.63ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:40:18,975 INFO L933 BasicCegarLoop]: 1578 mSDtfsCounter, 1255 mSDsluCounter, 3504 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 206 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10023.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 5082 SdHoareTripleChecker+Invalid, 2546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.65ms SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10905.43ms IncrementalHoareTripleChecker+Time [2021-11-05 13:40:18,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1255 Valid, 5082 Invalid, 2546 Unknown, 0 Unchecked, 19.65ms Time], IncrementalHoareTripleChecker [206 Valid, 2338 Invalid, 2 Unknown, 0 Unchecked, 10905.43ms Time] [2021-11-05 13:40:18,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2021-11-05 13:40:19,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 1373. [2021-11-05 13:40:19,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1343 states have (on average 1.2710349962769918) internal successors, (1707), 1372 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:40:19,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1707 transitions. [2021-11-05 13:40:19,032 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1707 transitions. Word has length 137 [2021-11-05 13:40:19,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:40:19,033 INFO L470 AbstractCegarLoop]: Abstraction has 1373 states and 1707 transitions. [2021-11-05 13:40:19,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:40:19,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1707 transitions. [2021-11-05 13:40:19,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-05 13:40:19,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:40:19,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:40:19,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-05 13:40:19,247 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,SelfDestructingSolverStorable11 [2021-11-05 13:40:19,247 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:40:19,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:40:19,248 INFO L85 PathProgramCache]: Analyzing trace with hash 436910135, now seen corresponding path program 1 times [2021-11-05 13:40:19,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:40:19,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898206116] [2021-11-05 13:40:19,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:19,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:40:19,338 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:40:19,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [985639536] [2021-11-05 13:40:19,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:19,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:40:19,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:40:19,340 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) [2021-11-05 13:40:19,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-05 13:40:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:40:20,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 3167 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-05 13:40:20,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:40:21,338 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 32 treesize of output 24 [2021-11-05 13:40:21,346 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 [2021-11-05 13:40:21,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:40:21,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:40:21,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:40:21,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898206116] [2021-11-05 13:40:21,608 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:40:21,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985639536] [2021-11-05 13:40:21,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985639536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:40:21,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:40:21,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 13:40:21,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429389921] [2021-11-05 13:40:21,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:40:21,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 13:40:21,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:40:21,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 13:40:21,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-05 13:40:21,610 INFO L87 Difference]: Start difference. First operand 1373 states and 1707 transitions. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:40:23,650 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:40:25,799 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:40:38,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:40:38,012 INFO L93 Difference]: Finished difference Result 6251 states and 7703 transitions. [2021-11-05 13:40:38,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-05 13:40:38,012 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-05 13:40:38,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:40:38,026 INFO L225 Difference]: With dead ends: 6251 [2021-11-05 13:40:38,026 INFO L226 Difference]: Without dead ends: 5012 [2021-11-05 13:40:38,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 2625.27ms TimeCoverageRelationStatistics Valid=276, Invalid=780, Unknown=0, NotChecked=0, Total=1056 [2021-11-05 13:40:38,030 INFO L933 BasicCegarLoop]: 2438 mSDtfsCounter, 8451 mSDsluCounter, 13092 mSDsCounter, 0 mSdLazyCounter, 3648 mSolverCounterSat, 283 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12622.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8451 SdHoareTripleChecker+Valid, 15530 SdHoareTripleChecker+Invalid, 3933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.06ms SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 3648 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13672.69ms IncrementalHoareTripleChecker+Time [2021-11-05 13:40:38,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8451 Valid, 15530 Invalid, 3933 Unknown, 0 Unchecked, 51.06ms Time], IncrementalHoareTripleChecker [283 Valid, 3648 Invalid, 2 Unknown, 0 Unchecked, 13672.69ms Time] [2021-11-05 13:40:38,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5012 states. [2021-11-05 13:40:38,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5012 to 2399. [2021-11-05 13:40:38,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 2369 states have (on average 1.273533136344449) internal successors, (3017), 2398 states have internal predecessors, (3017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:40:38,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3017 transitions. [2021-11-05 13:40:38,157 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3017 transitions. Word has length 137 [2021-11-05 13:40:38,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:40:38,158 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 3017 transitions. [2021-11-05 13:40:38,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:40:38,158 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3017 transitions. [2021-11-05 13:40:38,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-05 13:40:38,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:40:38,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:40:38,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-05 13:40:38,374 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,SelfDestructingSolverStorable12 [2021-11-05 13:40:38,374 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:40:38,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:40:38,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1182064779, now seen corresponding path program 1 times [2021-11-05 13:40:38,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:40:38,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444687813] [2021-11-05 13:40:38,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:38,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:40:38,451 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:40:38,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1512042838] [2021-11-05 13:40:38,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:38,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:40:38,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:40:38,453 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) [2021-11-05 13:40:38,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-05 13:40:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:40:39,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 3162 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-05 13:40:39,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:40:39,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:40:39,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:40:39,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:40:39,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444687813] [2021-11-05 13:40:39,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:40:39,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512042838] [2021-11-05 13:40:39,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512042838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:40:39,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:40:39,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:40:39,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466450560] [2021-11-05 13:40:39,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:40:39,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:40:39,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:40:39,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:40:39,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:40:39,746 INFO L87 Difference]: Start difference. First operand 2399 states and 3017 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:40:41,782 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:40:43,947 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:40:50,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:40:50,357 INFO L93 Difference]: Finished difference Result 5913 states and 7355 transitions. [2021-11-05 13:40:50,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:40:50,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-05 13:40:50,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:40:50,391 INFO L225 Difference]: With dead ends: 5913 [2021-11-05 13:40:50,392 INFO L226 Difference]: Without dead ends: 3571 [2021-11-05 13:40:50,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 232.90ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:40:50,395 INFO L933 BasicCegarLoop]: 1912 mSDtfsCounter, 885 mSDsluCounter, 4029 mSDsCounter, 0 mSdLazyCounter, 1897 mSolverCounterSat, 290 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9311.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 5941 SdHoareTripleChecker+Invalid, 2189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.19ms SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 1897 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10271.62ms IncrementalHoareTripleChecker+Time [2021-11-05 13:40:50,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 5941 Invalid, 2189 Unknown, 0 Unchecked, 17.19ms Time], IncrementalHoareTripleChecker [290 Valid, 1897 Invalid, 2 Unknown, 0 Unchecked, 10271.62ms Time] [2021-11-05 13:40:50,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3571 states. [2021-11-05 13:40:50,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3571 to 2399. [2021-11-05 13:40:50,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 2369 states have (on average 1.241452089489236) internal successors, (2941), 2398 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:40:50,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 2941 transitions. [2021-11-05 13:40:50,511 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 2941 transitions. Word has length 137 [2021-11-05 13:40:50,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:40:50,512 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 2941 transitions. [2021-11-05 13:40:50,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:40:50,512 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 2941 transitions. [2021-11-05 13:40:50,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-05 13:40:50,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:40:50,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:40:50,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-05 13:40:50,727 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,SelfDestructingSolverStorable13 [2021-11-05 13:40:50,728 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:40:50,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:40:50,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1172320503, now seen corresponding path program 1 times [2021-11-05 13:40:50,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:40:50,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795126335] [2021-11-05 13:40:50,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:50,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:40:50,796 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:40:50,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319694857] [2021-11-05 13:40:50,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:50,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:40:50,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:40:50,798 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) [2021-11-05 13:40:50,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-05 13:40:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:40:51,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 3167 conjuncts, 76 conjunts are in the unsatisfiable core [2021-11-05 13:40:51,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:40:53,296 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 32 treesize of output 24 [2021-11-05 13:40:53,301 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 [2021-11-05 13:40:53,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:40:53,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:40:53,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:40:53,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795126335] [2021-11-05 13:40:53,533 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:40:53,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319694857] [2021-11-05 13:40:53,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319694857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:40:53,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:40:53,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 13:40:53,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207923278] [2021-11-05 13:40:53,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:40:53,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 13:40:53,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:40:53,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 13:40:53,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-05 13:40:53,534 INFO L87 Difference]: Start difference. First operand 2399 states and 2941 transitions. Second operand has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 13 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:40:55,570 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:40:57,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:40:59,906 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:41:02,053 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:41:24,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:41:24,612 INFO L93 Difference]: Finished difference Result 13155 states and 15921 transitions. [2021-11-05 13:41:24,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-05 13:41:24,612 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 13 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-05 13:41:24,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:41:24,628 INFO L225 Difference]: With dead ends: 13155 [2021-11-05 13:41:24,628 INFO L226 Difference]: Without dead ends: 10965 [2021-11-05 13:41:24,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 5621.14ms TimeCoverageRelationStatistics Valid=517, Invalid=2033, Unknown=0, NotChecked=0, Total=2550 [2021-11-05 13:41:24,633 INFO L933 BasicCegarLoop]: 2211 mSDtfsCounter, 10221 mSDsluCounter, 14527 mSDsCounter, 0 mSdLazyCounter, 5468 mSolverCounterSat, 768 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23097.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10221 SdHoareTripleChecker+Valid, 16738 SdHoareTripleChecker+Invalid, 6240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 80.62ms SdHoareTripleChecker+Time, 768 IncrementalHoareTripleChecker+Valid, 5468 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25137.07ms IncrementalHoareTripleChecker+Time [2021-11-05 13:41:24,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10221 Valid, 16738 Invalid, 6240 Unknown, 0 Unchecked, 80.62ms Time], IncrementalHoareTripleChecker [768 Valid, 5468 Invalid, 4 Unknown, 0 Unchecked, 25137.07ms Time] [2021-11-05 13:41:24,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10965 states. [2021-11-05 13:41:24,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10965 to 2425. [2021-11-05 13:41:24,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2425 states, 2395 states have (on average 1.240918580375783) internal successors, (2972), 2424 states have internal predecessors, (2972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:41:24,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 2972 transitions. [2021-11-05 13:41:24,793 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 2972 transitions. Word has length 137 [2021-11-05 13:41:24,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:41:24,793 INFO L470 AbstractCegarLoop]: Abstraction has 2425 states and 2972 transitions. [2021-11-05 13:41:24,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 13 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:41:24,794 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 2972 transitions. [2021-11-05 13:41:24,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-05 13:41:24,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:41:24,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:41:24,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-05 13:41:25,023 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,SelfDestructingSolverStorable14 [2021-11-05 13:41:25,024 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:41:25,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:41:25,024 INFO L85 PathProgramCache]: Analyzing trace with hash 319026165, now seen corresponding path program 1 times [2021-11-05 13:41:25,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:41:25,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816029879] [2021-11-05 13:41:25,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:41:25,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:41:25,102 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:41:25,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648348490] [2021-11-05 13:41:25,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:41:25,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:41:25,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:41:25,105 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) [2021-11-05 13:41:25,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-05 13:41:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:41:25,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 3172 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 13:41:25,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:41:26,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:41:26,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:41:26,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:41:26,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816029879] [2021-11-05 13:41:26,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:41:26,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648348490] [2021-11-05 13:41:26,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648348490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:41:26,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:41:26,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:41:26,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108117123] [2021-11-05 13:41:26,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:41:26,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:41:26,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:41:26,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:41:26,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:41:26,243 INFO L87 Difference]: Start difference. First operand 2425 states and 2972 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:41:26,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:41:26,659 INFO L93 Difference]: Finished difference Result 4675 states and 5718 transitions. [2021-11-05 13:41:26,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:41:26,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-05 13:41:26,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:41:26,666 INFO L225 Difference]: With dead ends: 4675 [2021-11-05 13:41:26,666 INFO L226 Difference]: Without dead ends: 2388 [2021-11-05 13:41:26,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.07ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:41:26,670 INFO L933 BasicCegarLoop]: 1441 mSDtfsCounter, 12 mSDsluCounter, 2816 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 287.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4257 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.77ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 313.86ms IncrementalHoareTripleChecker+Time [2021-11-05 13:41:26,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 4257 Invalid, 123 Unknown, 0 Unchecked, 2.77ms Time], IncrementalHoareTripleChecker [21 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 313.86ms Time] [2021-11-05 13:41:26,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2021-11-05 13:41:26,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2371. [2021-11-05 13:41:26,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2371 states, 2341 states have (on average 1.2306706535668517) internal successors, (2881), 2370 states have internal predecessors, (2881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:41:26,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 2881 transitions. [2021-11-05 13:41:26,798 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 2881 transitions. Word has length 137 [2021-11-05 13:41:26,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:41:26,799 INFO L470 AbstractCegarLoop]: Abstraction has 2371 states and 2881 transitions. [2021-11-05 13:41:26,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:41:26,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 2881 transitions. [2021-11-05 13:41:26,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-05 13:41:26,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:41:26,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:41:26,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-05 13:41:27,016 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,SelfDestructingSolverStorable15 [2021-11-05 13:41:27,017 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:41:27,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:41:27,017 INFO L85 PathProgramCache]: Analyzing trace with hash -293678503, now seen corresponding path program 1 times [2021-11-05 13:41:27,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:41:27,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660434812] [2021-11-05 13:41:27,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:41:27,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:41:27,083 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:41:27,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [404325178] [2021-11-05 13:41:27,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:41:27,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:41:27,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:41:27,086 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) [2021-11-05 13:41:27,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-05 13:41:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:41:27,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 3186 conjuncts, 104 conjunts are in the unsatisfiable core [2021-11-05 13:41:27,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:41:29,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-05 13:41:29,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2021-11-05 13:41:30,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-05 13:41:30,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2021-11-05 13:41:30,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:41:30,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:41:30,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:41:30,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660434812] [2021-11-05 13:41:30,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:41:30,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404325178] [2021-11-05 13:41:30,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404325178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:41:30,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:41:30,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 13:41:30,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837018329] [2021-11-05 13:41:30,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:41:30,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 13:41:30,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:41:30,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 13:41:30,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-05 13:41:30,305 INFO L87 Difference]: Start difference. First operand 2371 states and 2881 transitions. Second operand has 16 states, 16 states have (on average 8.625) internal successors, (138), 16 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:41:32,359 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:41:34,875 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:41:37,230 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:41:39,426 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:41:41,577 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:42:10,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:42:10,394 INFO L93 Difference]: Finished difference Result 9208 states and 11096 transitions. [2021-11-05 13:42:10,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-05 13:42:10,395 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.625) internal successors, (138), 16 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-05 13:42:10,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:42:10,408 INFO L225 Difference]: With dead ends: 9208 [2021-11-05 13:42:10,409 INFO L226 Difference]: Without dead ends: 7141 [2021-11-05 13:42:10,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 3602.95ms TimeCoverageRelationStatistics Valid=321, Invalid=1085, Unknown=0, NotChecked=0, Total=1406 [2021-11-05 13:42:10,415 INFO L933 BasicCegarLoop]: 2023 mSDtfsCounter, 11465 mSDsluCounter, 22140 mSDsCounter, 0 mSdLazyCounter, 6868 mSolverCounterSat, 743 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32688.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11465 SdHoareTripleChecker+Valid, 24163 SdHoareTripleChecker+Invalid, 7616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 120.01ms SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 6868 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36306.13ms IncrementalHoareTripleChecker+Time [2021-11-05 13:42:10,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11465 Valid, 24163 Invalid, 7616 Unknown, 0 Unchecked, 120.01ms Time], IncrementalHoareTripleChecker [743 Valid, 6868 Invalid, 5 Unknown, 0 Unchecked, 36306.13ms Time] [2021-11-05 13:42:10,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7141 states. [2021-11-05 13:42:10,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7141 to 3617. [2021-11-05 13:42:10,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3617 states, 3587 states have (on average 1.2319487036520769) internal successors, (4419), 3616 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:42:10,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3617 states to 3617 states and 4419 transitions. [2021-11-05 13:42:10,634 INFO L78 Accepts]: Start accepts. Automaton has 3617 states and 4419 transitions. Word has length 138 [2021-11-05 13:42:10,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:42:10,635 INFO L470 AbstractCegarLoop]: Abstraction has 3617 states and 4419 transitions. [2021-11-05 13:42:10,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.625) internal successors, (138), 16 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:42:10,635 INFO L276 IsEmpty]: Start isEmpty. Operand 3617 states and 4419 transitions. [2021-11-05 13:42:10,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-05 13:42:10,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:42:10,637 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:42:10,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-05 13:42:10,863 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,SelfDestructingSolverStorable16 [2021-11-05 13:42:10,864 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:42:10,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:42:10,864 INFO L85 PathProgramCache]: Analyzing trace with hash -383102567, now seen corresponding path program 1 times [2021-11-05 13:42:10,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:42:10,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357050540] [2021-11-05 13:42:10,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:42:10,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:42:10,942 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:42:10,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546306165] [2021-11-05 13:42:10,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:42:10,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:42:10,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:42:10,945 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) [2021-11-05 13:42:10,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-05 13:42:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:42:12,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 3186 conjuncts, 145 conjunts are in the unsatisfiable core [2021-11-05 13:42:12,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:42:14,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-05 13:42:14,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2021-11-05 13:42:15,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-05 13:42:15,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2021-11-05 13:42:15,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 13:42:15,912 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:42:15,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 47 [2021-11-05 13:42:15,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 13:42:15,930 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:42:15,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 20 [2021-11-05 13:42:16,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:42:16,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:42:16,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:42:16,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357050540] [2021-11-05 13:42:16,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:42:16,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546306165] [2021-11-05 13:42:16,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546306165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:42:16,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:42:16,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-05 13:42:16,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267100155] [2021-11-05 13:42:16,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:42:16,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-05 13:42:16,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:42:16,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-05 13:42:16,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2021-11-05 13:42:16,576 INFO L87 Difference]: Start difference. First operand 3617 states and 4419 transitions. Second operand has 21 states, 21 states have (on average 6.571428571428571) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:42:18,622 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:42:20,812 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:42:23,084 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:42:25,354 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:42:27,549 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:43:21,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:43:21,175 INFO L93 Difference]: Finished difference Result 16287 states and 19723 transitions. [2021-11-05 13:43:21,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-05 13:43:21,176 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.571428571428571) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-05 13:43:21,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:43:21,205 INFO L225 Difference]: With dead ends: 16287 [2021-11-05 13:43:21,206 INFO L226 Difference]: Without dead ends: 14009 [2021-11-05 13:43:21,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1657 ImplicationChecksByTransitivity, 12077.15ms TimeCoverageRelationStatistics Valid=1015, Invalid=4535, Unknown=0, NotChecked=0, Total=5550 [2021-11-05 13:43:21,215 INFO L933 BasicCegarLoop]: 2367 mSDtfsCounter, 16920 mSDsluCounter, 32941 mSDsCounter, 0 mSdLazyCounter, 11210 mSolverCounterSat, 1601 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47708.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16920 SdHoareTripleChecker+Valid, 35308 SdHoareTripleChecker+Invalid, 12816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 204.21ms SdHoareTripleChecker+Time, 1601 IncrementalHoareTripleChecker+Valid, 11210 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52567.39ms IncrementalHoareTripleChecker+Time [2021-11-05 13:43:21,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16920 Valid, 35308 Invalid, 12816 Unknown, 0 Unchecked, 204.21ms Time], IncrementalHoareTripleChecker [1601 Valid, 11210 Invalid, 5 Unknown, 0 Unchecked, 52567.39ms Time] [2021-11-05 13:43:21,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14009 states. [2021-11-05 13:43:21,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14009 to 6293. [2021-11-05 13:43:21,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6293 states, 6263 states have (on average 1.2332747884400448) internal successors, (7724), 6292 states have internal predecessors, (7724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:43:21,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6293 states to 6293 states and 7724 transitions. [2021-11-05 13:43:21,672 INFO L78 Accepts]: Start accepts. Automaton has 6293 states and 7724 transitions. Word has length 138 [2021-11-05 13:43:21,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:43:21,673 INFO L470 AbstractCegarLoop]: Abstraction has 6293 states and 7724 transitions. [2021-11-05 13:43:21,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.571428571428571) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:43:21,673 INFO L276 IsEmpty]: Start isEmpty. Operand 6293 states and 7724 transitions. [2021-11-05 13:43:21,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-05 13:43:21,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:43:21,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:43:21,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-05 13:43:21,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:43:21,892 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:43:21,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:43:21,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1251277366, now seen corresponding path program 1 times [2021-11-05 13:43:21,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:43:21,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268899461] [2021-11-05 13:43:21,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:43:21,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:43:21,974 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:43:21,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [941621701] [2021-11-05 13:43:21,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:43:21,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:43:21,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:43:21,976 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) [2021-11-05 13:43:21,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-05 13:43:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:43:23,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 3205 conjuncts, 130 conjunts are in the unsatisfiable core [2021-11-05 13:43:23,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:43:23,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 13:43:24,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:43:24,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-05 13:43:24,781 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-05 13:43:24,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 20 [2021-11-05 13:43:24,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:43:24,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-05 13:43:25,127 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-05 13:43:25,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-05 13:43:25,322 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-05 13:43:25,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-05 13:43:26,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:43:26,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-05 13:43:28,442 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 9 treesize of output 3 [2021-11-05 13:43:28,462 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 9 treesize of output 3 [2021-11-05 13:43:29,515 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 41 treesize of output 29 [2021-11-05 13:43:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:43:29,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:43:29,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:43:29,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268899461] [2021-11-05 13:43:29,976 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:43:29,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941621701] [2021-11-05 13:43:29,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941621701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:43:29,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:43:29,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-05 13:43:29,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644193066] [2021-11-05 13:43:29,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:43:29,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-05 13:43:29,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:43:29,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-05 13:43:29,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2021-11-05 13:43:29,979 INFO L87 Difference]: Start difference. First operand 6293 states and 7724 transitions. Second operand has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:43:32,138 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:43:34,356 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:43:36,683 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:43:38,867 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:43:41,087 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:43:43,342 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:43:45,523 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:05,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:44:05,582 INFO L93 Difference]: Finished difference Result 12588 states and 15451 transitions. [2021-11-05 13:44:05,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-05 13:44:05,584 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-11-05 13:44:05,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:44:05,591 INFO L225 Difference]: With dead ends: 12588 [2021-11-05 13:44:05,592 INFO L226 Difference]: Without dead ends: 6290 [2021-11-05 13:44:05,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 6430.00ms TimeCoverageRelationStatistics Valid=312, Invalid=1668, Unknown=0, NotChecked=0, Total=1980 [2021-11-05 13:44:05,600 INFO L933 BasicCegarLoop]: 1396 mSDtfsCounter, 431 mSDsluCounter, 10087 mSDsCounter, 0 mSdLazyCounter, 3278 mSolverCounterSat, 64 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28331.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 11483 SdHoareTripleChecker+Invalid, 3349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.47ms SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3278 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31680.10ms IncrementalHoareTripleChecker+Time [2021-11-05 13:44:05,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 11483 Invalid, 3349 Unknown, 0 Unchecked, 45.47ms Time], IncrementalHoareTripleChecker [64 Valid, 3278 Invalid, 7 Unknown, 0 Unchecked, 31680.10ms Time] [2021-11-05 13:44:05,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6290 states. [2021-11-05 13:44:05,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6290 to 6289. [2021-11-05 13:44:05,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6289 states, 6259 states have (on average 1.233264099696437) internal successors, (7719), 6288 states have internal predecessors, (7719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:44:05,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6289 states to 6289 states and 7719 transitions. [2021-11-05 13:44:05,952 INFO L78 Accepts]: Start accepts. Automaton has 6289 states and 7719 transitions. Word has length 139 [2021-11-05 13:44:05,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:44:05,952 INFO L470 AbstractCegarLoop]: Abstraction has 6289 states and 7719 transitions. [2021-11-05 13:44:05,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:44:05,953 INFO L276 IsEmpty]: Start isEmpty. Operand 6289 states and 7719 transitions. [2021-11-05 13:44:05,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-05 13:44:05,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:44:05,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:44:05,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-05 13:44:06,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:44:06,155 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:44:06,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:44:06,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1723457824, now seen corresponding path program 1 times [2021-11-05 13:44:06,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:44:06,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071115725] [2021-11-05 13:44:06,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:44:06,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:44:06,255 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:44:06,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1480430676] [2021-11-05 13:44:06,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:44:06,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:44:06,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:44:06,257 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) [2021-11-05 13:44:06,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-05 13:44:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:44:07,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 3219 conjuncts, 73 conjunts are in the unsatisfiable core [2021-11-05 13:44:07,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:44:07,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 13:44:07,857 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-05 13:44:07,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-05 13:44:08,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-05 13:44:08,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:44:08,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2021-11-05 13:44:09,140 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-05 13:44:09,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 35 [2021-11-05 13:44:09,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:44:09,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 30 [2021-11-05 13:44:09,673 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-11-05 13:44:09,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2021-11-05 13:44:09,959 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-11-05 13:44:09,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 34 [2021-11-05 13:44:10,211 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:44:10,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2021-11-05 13:44:10,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:44:10,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:44:10,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:44:10,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071115725] [2021-11-05 13:44:10,794 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:44:10,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480430676] [2021-11-05 13:44:10,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480430676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:44:10,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:44:10,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-05 13:44:10,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555228574] [2021-11-05 13:44:10,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:44:10,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 13:44:10,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:44:10,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 13:44:10,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-05 13:44:10,796 INFO L87 Difference]: Start difference. First operand 6289 states and 7719 transitions. Second operand has 15 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:44:13,051 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:15,298 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:17,572 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:19,768 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:21,955 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:24,206 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:38,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:44:38,868 INFO L93 Difference]: Finished difference Result 12955 states and 15809 transitions. [2021-11-05 13:44:38,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-05 13:44:38,870 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-11-05 13:44:38,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:44:38,879 INFO L225 Difference]: With dead ends: 12955 [2021-11-05 13:44:38,879 INFO L226 Difference]: Without dead ends: 6720 [2021-11-05 13:44:38,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 3008.21ms TimeCoverageRelationStatistics Valid=155, Invalid=495, Unknown=0, NotChecked=0, Total=650 [2021-11-05 13:44:38,886 INFO L933 BasicCegarLoop]: 1472 mSDtfsCounter, 375 mSDsluCounter, 9165 mSDsCounter, 0 mSdLazyCounter, 3180 mSolverCounterSat, 147 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22902.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 10637 SdHoareTripleChecker+Invalid, 3333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.66ms SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 3180 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25598.57ms IncrementalHoareTripleChecker+Time [2021-11-05 13:44:38,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 10637 Invalid, 3333 Unknown, 0 Unchecked, 37.66ms Time], IncrementalHoareTripleChecker [147 Valid, 3180 Invalid, 6 Unknown, 0 Unchecked, 25598.57ms Time] [2021-11-05 13:44:38,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6720 states. [2021-11-05 13:44:39,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6720 to 6289. [2021-11-05 13:44:39,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6289 states, 6259 states have (on average 1.2331043297651383) internal successors, (7718), 6288 states have internal predecessors, (7718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:44:39,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6289 states to 6289 states and 7718 transitions. [2021-11-05 13:44:39,239 INFO L78 Accepts]: Start accepts. Automaton has 6289 states and 7718 transitions. Word has length 142 [2021-11-05 13:44:39,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:44:39,239 INFO L470 AbstractCegarLoop]: Abstraction has 6289 states and 7718 transitions. [2021-11-05 13:44:39,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:44:39,239 INFO L276 IsEmpty]: Start isEmpty. Operand 6289 states and 7718 transitions. [2021-11-05 13:44:39,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-05 13:44:39,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:44:39,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:44:39,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-05 13:44:39,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:44:39,468 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:44:39,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:44:39,468 INFO L85 PathProgramCache]: Analyzing trace with hash 2099931590, now seen corresponding path program 1 times [2021-11-05 13:44:39,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:44:39,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045403681] [2021-11-05 13:44:39,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:44:39,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:44:39,545 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:44:39,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1659588835] [2021-11-05 13:44:39,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:44:39,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:44:39,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:44:39,547 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) [2021-11-05 13:44:39,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-05 13:44:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:44:40,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 3224 conjuncts, 92 conjunts are in the unsatisfiable core [2021-11-05 13:44:40,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:44:41,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:44:41,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2021-11-05 13:44:41,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:44:41,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-05 13:44:42,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-11-05 13:44:42,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2021-11-05 13:44:42,851 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 36 treesize of output 28 [2021-11-05 13:44:42,857 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 28 treesize of output 20 [2021-11-05 13:44:43,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:44:43,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:44:43,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:44:43,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045403681] [2021-11-05 13:44:43,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:44:43,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659588835] [2021-11-05 13:44:43,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659588835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:44:43,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:44:43,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 13:44:43,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055387519] [2021-11-05 13:44:43,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:44:43,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 13:44:43,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:44:43,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 13:44:43,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-05 13:44:43,148 INFO L87 Difference]: Start difference. First operand 6289 states and 7718 transitions. Second operand has 16 states, 16 states have (on average 9.0) internal successors, (144), 16 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:44:45,479 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:47,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:49,995 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:45:22,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:45:22,040 INFO L93 Difference]: Finished difference Result 24582 states and 29887 transitions. [2021-11-05 13:45:22,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-05 13:45:22,041 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.0) internal successors, (144), 16 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-05 13:45:22,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:45:22,060 INFO L225 Difference]: With dead ends: 24582 [2021-11-05 13:45:22,060 INFO L226 Difference]: Without dead ends: 18554 [2021-11-05 13:45:22,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 3922.62ms TimeCoverageRelationStatistics Valid=529, Invalid=1921, Unknown=0, NotChecked=0, Total=2450 [2021-11-05 13:45:22,068 INFO L933 BasicCegarLoop]: 2499 mSDtfsCounter, 8207 mSDsluCounter, 22909 mSDsCounter, 0 mSdLazyCounter, 8669 mSolverCounterSat, 598 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30830.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8207 SdHoareTripleChecker+Valid, 25408 SdHoareTripleChecker+Invalid, 9270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 105.94ms SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 8669 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34425.73ms IncrementalHoareTripleChecker+Time [2021-11-05 13:45:22,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8207 Valid, 25408 Invalid, 9270 Unknown, 0 Unchecked, 105.94ms Time], IncrementalHoareTripleChecker [598 Valid, 8669 Invalid, 3 Unknown, 0 Unchecked, 34425.73ms Time] [2021-11-05 13:45:22,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18554 states. [2021-11-05 13:45:22,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18554 to 12187. [2021-11-05 13:45:22,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12187 states, 12157 states have (on average 1.234103808505388) internal successors, (15003), 12186 states have internal predecessors, (15003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:45:22,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12187 states to 12187 states and 15003 transitions. [2021-11-05 13:45:22,706 INFO L78 Accepts]: Start accepts. Automaton has 12187 states and 15003 transitions. Word has length 144 [2021-11-05 13:45:22,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:45:22,707 INFO L470 AbstractCegarLoop]: Abstraction has 12187 states and 15003 transitions. [2021-11-05 13:45:22,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.0) internal successors, (144), 16 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:45:22,707 INFO L276 IsEmpty]: Start isEmpty. Operand 12187 states and 15003 transitions. [2021-11-05 13:45:22,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-05 13:45:22,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:45:22,710 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:45:22,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-05 13:45:22,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:45:22,924 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:45:22,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:45:22,924 INFO L85 PathProgramCache]: Analyzing trace with hash 438065414, now seen corresponding path program 1 times [2021-11-05 13:45:22,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:45:22,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693455998] [2021-11-05 13:45:22,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:45:22,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:45:22,992 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:45:22,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661695127] [2021-11-05 13:45:22,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:45:22,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:45:22,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:45:22,994 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) [2021-11-05 13:45:22,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-05 13:45:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:45:23,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 3224 conjuncts, 179 conjunts are in the unsatisfiable core [2021-11-05 13:45:23,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:45:23,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 13:45:24,465 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-05 13:45:24,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-05 13:45:24,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:45:24,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-05 13:45:24,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:45:24,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 35 [2021-11-05 13:45:25,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:45:25,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:45:25,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:45:25,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 44 [2021-11-05 13:45:25,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:45:25,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-05 13:45:25,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 13:45:25,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 40 [2021-11-05 13:45:25,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:45:25,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:45:25,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:45:25,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 44 [2021-11-05 13:45:26,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:45:26,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:45:26,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:45:26,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 42 [2021-11-05 13:45:26,937 INFO L354 Elim1Store]: treesize reduction 154, result has 18.9 percent of original size [2021-11-05 13:45:26,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 40 treesize of output 57 [2021-11-05 13:45:27,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:45:27,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:45:27,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:45:27,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 49 [2021-11-05 13:45:29,125 INFO L354 Elim1Store]: treesize reduction 108, result has 19.4 percent of original size [2021-11-05 13:45:29,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 47 treesize of output 57 [2021-11-05 13:45:30,279 INFO L354 Elim1Store]: treesize reduction 48, result has 47.3 percent of original size [2021-11-05 13:45:30,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 36 treesize of output 62 [2021-11-05 13:45:30,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:45:30,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:45:30,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:45:30,681 INFO L354 Elim1Store]: treesize reduction 96, result has 21.3 percent of original size [2021-11-05 13:45:30,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 48 [2021-11-05 13:45:31,902 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 9 treesize of output 3 [2021-11-05 13:45:33,891 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-05 13:45:33,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 40 [2021-11-05 13:45:34,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:45:34,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:45:34,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:45:34,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693455998] [2021-11-05 13:45:34,491 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:45:34,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661695127] [2021-11-05 13:45:34,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661695127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:45:34,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:45:34,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-11-05 13:45:34,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242726811] [2021-11-05 13:45:34,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:45:34,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-05 13:45:34,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:45:34,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-05 13:45:34,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1172, Unknown=0, NotChecked=0, Total=1332 [2021-11-05 13:45:34,493 INFO L87 Difference]: Start difference. First operand 12187 states and 15003 transitions. Second operand has 37 states, 37 states have (on average 3.891891891891892) internal successors, (144), 37 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:45:36,547 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:45:38,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:45:41,301 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:45:43,555 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:45:45,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:45:48,028 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:45:50,270 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:45:52,523 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:45:54,718 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:45:56,883 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:45:59,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:46:01,467 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:46:03,686 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:46:05,913 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:46:08,088 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:46:47,510 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-05 13:47:07,740 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-05 13:47:29,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:47:29,016 INFO L93 Difference]: Finished difference Result 39207 states and 47690 transitions. [2021-11-05 13:47:29,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-11-05 13:47:29,019 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.891891891891892) internal successors, (144), 37 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-05 13:47:29,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:47:29,057 INFO L225 Difference]: With dead ends: 39207 [2021-11-05 13:47:29,057 INFO L226 Difference]: Without dead ends: 33179 [2021-11-05 13:47:29,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3416 ImplicationChecksByTransitivity, 12055.77ms TimeCoverageRelationStatistics Valid=863, Invalid=8643, Unknown=0, NotChecked=0, Total=9506 [2021-11-05 13:47:29,071 INFO L933 BasicCegarLoop]: 3552 mSDtfsCounter, 4093 mSDsluCounter, 54413 mSDsCounter, 0 mSdLazyCounter, 19303 mSolverCounterSat, 239 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92660.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4093 SdHoareTripleChecker+Valid, 57965 SdHoareTripleChecker+Invalid, 20926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 216.45ms SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 19303 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 1367 IncrementalHoareTripleChecker+Unchecked, 103883.30ms IncrementalHoareTripleChecker+Time [2021-11-05 13:47:29,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4093 Valid, 57965 Invalid, 20926 Unknown, 0 Unchecked, 216.45ms Time], IncrementalHoareTripleChecker [239 Valid, 19303 Invalid, 17 Unknown, 1367 Unchecked, 103883.30ms Time] [2021-11-05 13:47:29,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33179 states. [2021-11-05 13:47:29,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33179 to 16334. [2021-11-05 13:47:29,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16334 states, 16304 states have (on average 1.234298331697743) internal successors, (20124), 16333 states have internal predecessors, (20124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:30,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16334 states to 16334 states and 20124 transitions. [2021-11-05 13:47:30,021 INFO L78 Accepts]: Start accepts. Automaton has 16334 states and 20124 transitions. Word has length 144 [2021-11-05 13:47:30,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:47:30,021 INFO L470 AbstractCegarLoop]: Abstraction has 16334 states and 20124 transitions. [2021-11-05 13:47:30,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.891891891891892) internal successors, (144), 37 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:30,022 INFO L276 IsEmpty]: Start isEmpty. Operand 16334 states and 20124 transitions. [2021-11-05 13:47:30,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-05 13:47:30,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:47:30,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:47:30,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-11-05 13:47:30,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:47:30,268 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:47:30,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:47:30,269 INFO L85 PathProgramCache]: Analyzing trace with hash 881050508, now seen corresponding path program 1 times [2021-11-05 13:47:30,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:47:30,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417353668] [2021-11-05 13:47:30,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:47:30,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:47:30,427 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:47:30,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318391354] [2021-11-05 13:47:30,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:47:30,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:47:30,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:47:30,444 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) [2021-11-05 13:47:30,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-05 13:47:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:47:31,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 3229 conjuncts, 92 conjunts are in the unsatisfiable core [2021-11-05 13:47:31,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:47:32,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:47:32,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2021-11-05 13:47:32,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:47:32,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-05 13:47:33,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-11-05 13:47:33,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2021-11-05 13:47:33,778 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 36 treesize of output 28 [2021-11-05 13:47:33,786 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 28 treesize of output 20 [2021-11-05 13:47:33,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:47:33,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:47:33,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:47:33,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417353668] [2021-11-05 13:47:33,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:47:33,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318391354] [2021-11-05 13:47:33,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318391354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:47:33,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:47:33,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 13:47:33,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407379715] [2021-11-05 13:47:33,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:47:33,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 13:47:33,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:47:33,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 13:47:33,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-11-05 13:47:33,985 INFO L87 Difference]: Start difference. First operand 16334 states and 20124 transitions. Second operand has 16 states, 16 states have (on average 9.125) internal successors, (146), 16 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:36,026 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:47:38,391 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:47:40,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:47:42,952 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:47:45,389 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:47:47,699 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:47:49,999 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:47:52,216 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:48:41,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:48:41,471 INFO L93 Difference]: Finished difference Result 80408 states and 98714 transitions. [2021-11-05 13:48:41,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-05 13:48:41,472 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.125) internal successors, (146), 16 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-11-05 13:48:41,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:48:41,565 INFO L225 Difference]: With dead ends: 80408 [2021-11-05 13:48:41,565 INFO L226 Difference]: Without dead ends: 66112 [2021-11-05 13:48:41,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2378 ImplicationChecksByTransitivity, 9011.05ms TimeCoverageRelationStatistics Valid=1447, Invalid=5693, Unknown=0, NotChecked=0, Total=7140 [2021-11-05 13:48:41,594 INFO L933 BasicCegarLoop]: 3616 mSDtfsCounter, 9910 mSDsluCounter, 31794 mSDsCounter, 0 mSdLazyCounter, 11919 mSolverCounterSat, 801 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48538.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9910 SdHoareTripleChecker+Valid, 35410 SdHoareTripleChecker+Invalid, 12728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 142.95ms SdHoareTripleChecker+Time, 801 IncrementalHoareTripleChecker+Valid, 11919 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55047.59ms IncrementalHoareTripleChecker+Time [2021-11-05 13:48:41,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9910 Valid, 35410 Invalid, 12728 Unknown, 0 Unchecked, 142.95ms Time], IncrementalHoareTripleChecker [801 Valid, 11919 Invalid, 8 Unknown, 0 Unchecked, 55047.59ms Time] [2021-11-05 13:48:41,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66112 states. [2021-11-05 13:48:43,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66112 to 34036. [2021-11-05 13:48:43,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34036 states, 34006 states have (on average 1.2331941422101982) internal successors, (41936), 34035 states have internal predecessors, (41936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:48:43,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34036 states to 34036 states and 41936 transitions. [2021-11-05 13:48:43,858 INFO L78 Accepts]: Start accepts. Automaton has 34036 states and 41936 transitions. Word has length 146 [2021-11-05 13:48:43,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:48:43,858 INFO L470 AbstractCegarLoop]: Abstraction has 34036 states and 41936 transitions. [2021-11-05 13:48:43,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.125) internal successors, (146), 16 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:48:43,859 INFO L276 IsEmpty]: Start isEmpty. Operand 34036 states and 41936 transitions. [2021-11-05 13:48:43,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-05 13:48:43,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:48:43,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:48:43,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-05 13:48:44,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:48:44,076 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:48:44,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:48:44,077 INFO L85 PathProgramCache]: Analyzing trace with hash -125857076, now seen corresponding path program 1 times [2021-11-05 13:48:44,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:48:44,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945800002] [2021-11-05 13:48:44,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:48:44,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:48:44,138 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:48:44,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [473359329] [2021-11-05 13:48:44,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:48:44,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:48:44,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:48:44,140 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) [2021-11-05 13:48:44,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-05 13:48:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:48:45,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 3229 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-05 13:48:45,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:48:45,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 13:48:46,140 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-05 13:48:46,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-05 13:48:46,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:48:46,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-11-05 13:48:46,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:48:46,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-11-05 13:48:47,101 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-05 13:48:47,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 21 [2021-11-05 13:48:47,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:48:47,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-11-05 13:48:47,713 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-05 13:48:47,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-11-05 13:48:47,889 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-05 13:48:47,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-11-05 13:48:50,440 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 10 treesize of output 6 [2021-11-05 13:48:50,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:48:50,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:48:50,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:48:50,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945800002] [2021-11-05 13:48:50,813 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:48:50,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473359329] [2021-11-05 13:48:50,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473359329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:48:50,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:48:50,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 13:48:50,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983956549] [2021-11-05 13:48:50,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:48:50,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 13:48:50,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:48:50,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 13:48:50,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=143, Unknown=1, NotChecked=0, Total=182 [2021-11-05 13:48:50,815 INFO L87 Difference]: Start difference. First operand 34036 states and 41936 transitions. Second operand has 14 states, 14 states have (on average 10.428571428571429) internal successors, (146), 14 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:48:52,855 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:48:55,293 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:49:02,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:49:02,835 INFO L93 Difference]: Finished difference Result 56124 states and 68586 transitions. [2021-11-05 13:49:02,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 13:49:02,835 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.428571428571429) internal successors, (146), 14 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-11-05 13:49:02,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:49:02,877 INFO L225 Difference]: With dead ends: 56124 [2021-11-05 13:49:02,877 INFO L226 Difference]: Without dead ends: 36408 [2021-11-05 13:49:02,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 3404.72ms TimeCoverageRelationStatistics Valid=48, Invalid=191, Unknown=1, NotChecked=0, Total=240 [2021-11-05 13:49:02,898 INFO L933 BasicCegarLoop]: 1511 mSDtfsCounter, 211 mSDsluCounter, 7909 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 50 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8012.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 9420 SdHoareTripleChecker+Invalid, 3029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.83ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 1868 IncrementalHoareTripleChecker+Unchecked, 9641.38ms IncrementalHoareTripleChecker+Time [2021-11-05 13:49:02,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 9420 Invalid, 3029 Unknown, 0 Unchecked, 18.83ms Time], IncrementalHoareTripleChecker [50 Valid, 1109 Invalid, 2 Unknown, 1868 Unchecked, 9641.38ms Time] [2021-11-05 13:49:02,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36408 states. [2021-11-05 13:49:05,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36408 to 34061. [2021-11-05 13:49:05,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34061 states, 34031 states have (on average 1.2331403720137522) internal successors, (41965), 34060 states have internal predecessors, (41965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:49:05,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34061 states to 34061 states and 41965 transitions. [2021-11-05 13:49:05,224 INFO L78 Accepts]: Start accepts. Automaton has 34061 states and 41965 transitions. Word has length 146 [2021-11-05 13:49:05,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:49:05,224 INFO L470 AbstractCegarLoop]: Abstraction has 34061 states and 41965 transitions. [2021-11-05 13:49:05,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.428571428571429) internal successors, (146), 14 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:49:05,225 INFO L276 IsEmpty]: Start isEmpty. Operand 34061 states and 41965 transitions. [2021-11-05 13:49:05,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-05 13:49:05,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:49:05,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:49:05,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-05 13:49:05,435 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,SelfDestructingSolverStorable23 [2021-11-05 13:49:05,435 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-05 13:49:05,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:49:05,436 INFO L85 PathProgramCache]: Analyzing trace with hash 548581900, now seen corresponding path program 1 times [2021-11-05 13:49:05,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:49:05,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198462359] [2021-11-05 13:49:05,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:49:05,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:49:05,494 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:49:05,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1164720485] [2021-11-05 13:49:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:49:05,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:49:05,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:49:05,496 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) [2021-11-05 13:49:05,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-05 13:49:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:49:06,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 3229 conjuncts, 179 conjunts are in the unsatisfiable core [2021-11-05 13:49:06,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:49:07,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-05 13:49:07,968 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 9 treesize of output 3 [2021-11-05 13:49:08,973 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-05 13:49:08,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-11-05 13:49:10,532 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-05 13:49:10,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 58 [2021-11-05 13:49:10,598 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-05 13:49:10,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 56 [2021-11-05 13:49:11,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 13:49:11,882 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:49:11,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-11-05 13:49:12,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:49:12,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:49:12,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:49:12,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198462359] [2021-11-05 13:49:12,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:49:12,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164720485] [2021-11-05 13:49:12,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164720485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:49:12,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:49:12,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-11-05 13:49:12,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869232047] [2021-11-05 13:49:12,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:49:12,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-05 13:49:12,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:49:12,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-05 13:49:12,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=771, Unknown=0, NotChecked=0, Total=870 [2021-11-05 13:49:12,087 INFO L87 Difference]: Start difference. First operand 34061 states and 41965 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:49:14,127 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:49:16,623 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:49:18,930 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:49:21,284 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:49:23,580 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:49:25,930 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:49:28,281 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:49:30,595 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:52:09,574 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] Killed by 15