./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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_up_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 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 14:01:36,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 14:01:36,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 14:01:36,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 14:01:36,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 14:01:36,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 14:01:36,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 14:01:36,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 14:01:36,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 14:01:36,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 14:01:36,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 14:01:36,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 14:01:36,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 14:01:36,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 14:01:36,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 14:01:36,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 14:01:36,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 14:01:36,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 14:01:36,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 14:01:36,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 14:01:36,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 14:01:36,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 14:01:36,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 14:01:36,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 14:01:36,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 14:01:36,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 14:01:36,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 14:01:36,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 14:01:36,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 14:01:36,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 14:01:36,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 14:01:36,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 14:01:36,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 14:01:36,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 14:01:36,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 14:01:36,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 14:01:36,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 14:01:36,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 14:01:36,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 14:01:36,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 14:01:36,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 14:01:36,134 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 14:01:36,164 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 14:01:36,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 14:01:36,165 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 14:01:36,165 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 14:01:36,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 14:01:36,166 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 14:01:36,166 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 14:01:36,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 14:01:36,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 14:01:36,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 14:01:36,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 14:01:36,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 14:01:36,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 14:01:36,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 14:01:36,168 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 14:01:36,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 14:01:36,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 14:01:36,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 14:01:36,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 14:01:36,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 14:01:36,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 14:01:36,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 14:01:36,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 14:01:36,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 14:01:36,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 14:01:36,170 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 14:01:36,171 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 14:01:36,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 14:01:36,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 14:01:36,171 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c [2021-11-02 14:01:36,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 14:01:36,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 14:01:36,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 14:01:36,415 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 14:01:36,416 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 14:01:36,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2021-11-02 14:01:36,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72724b7f7/defe7a7631fb41979005ce32b14fa805/FLAGa0e2d59db [2021-11-02 14:01:37,185 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 14:01:37,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2021-11-02 14:01:37,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72724b7f7/defe7a7631fb41979005ce32b14fa805/FLAGa0e2d59db [2021-11-02 14:01:37,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72724b7f7/defe7a7631fb41979005ce32b14fa805 [2021-11-02 14:01:37,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 14:01:37,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 14:01:37,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 14:01:37,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 14:01:37,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 14:01:37,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 02:01:37" (1/1) ... [2021-11-02 14:01:37,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f899572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:37, skipping insertion in model container [2021-11-02 14:01:37,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 02:01:37" (1/1) ... [2021-11-02 14:01:37,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 14:01:37,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 14:01:37,834 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_up_harness.i[4502,4515] [2021-11-02 14:01:37,841 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_up_harness.i[4562,4575] [2021-11-02 14:01:37,861 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 14:01:37,874 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 14:01:38,460 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,461 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,461 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,461 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,462 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,480 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,481 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,482 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,482 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,484 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,484 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,485 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,487 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,719 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 14:01:38,721 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 14:01:38,722 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 14:01:38,722 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 14:01:38,723 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 14:01:38,724 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 14:01:38,724 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 14:01:38,725 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 14:01:38,726 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 14:01:38,726 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 14:01:38,845 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 14:01:38,884 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,885 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,889 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,901 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,972 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,973 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,973 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,973 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,974 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,975 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,975 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,975 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,976 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,976 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,976 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,976 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,977 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,979 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,979 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,979 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,979 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,986 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,989 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,994 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,998 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:38,999 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 14:01:39,094 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 14:01:39,114 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_up_harness.i[4502,4515] [2021-11-02 14:01:39,136 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_up_harness.i[4562,4575] [2021-11-02 14:01:39,138 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 14:01:39,138 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 14:01:39,183 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,183 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,184 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,184 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,184 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,190 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,191 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,191 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,191 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,192 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,193 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,193 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,193 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,229 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 14:01:39,230 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 14:01:39,230 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 14:01:39,231 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 14:01:39,231 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 14:01:39,232 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 14:01:39,232 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 14:01:39,233 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 14:01:39,233 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 14:01:39,233 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 14:01:39,267 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 14:01:39,282 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,283 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,284 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,287 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,316 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,317 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,317 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,317 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,318 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,318 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,319 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,319 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,320 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,320 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,321 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,321 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,321 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,323 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,323 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,323 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,324 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,325 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,325 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,329 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,330 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,330 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:01:39,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 14:01:39,493 INFO L208 MainTranslator]: Completed translation [2021-11-02 14:01:39,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:39 WrapperNode [2021-11-02 14:01:39,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 14:01:39,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 14:01:39,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 14:01:39,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 14:01:39,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:39" (1/1) ... [2021-11-02 14:01:39,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:39" (1/1) ... [2021-11-02 14:01:39,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 14:01:39,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 14:01:39,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 14:01:39,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 14:01:39,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:39" (1/1) ... [2021-11-02 14:01:39,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:39" (1/1) ... [2021-11-02 14:01:39,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:39" (1/1) ... [2021-11-02 14:01:39,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:39" (1/1) ... [2021-11-02 14:01:39,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:39" (1/1) ... [2021-11-02 14:01:39,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:39" (1/1) ... [2021-11-02 14:01:39,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:39" (1/1) ... [2021-11-02 14:01:39,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 14:01:39,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 14:01:39,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 14:01:39,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 14:01:39,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:39" (1/1) ... [2021-11-02 14:01:39,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 14:01:39,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:01:39,988 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) [2021-11-02 14:01:40,015 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 [2021-11-02 14:01:40,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 14:01:40,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 14:01:40,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 14:01:40,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 14:01:40,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 14:01:40,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 14:01:40,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 14:01:40,106 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-02 14:01:40,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 14:01:40,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 14:01:40,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 14:01:40,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 14:01:46,070 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 14:01:46,070 INFO L299 CfgBuilder]: Removed 788 assume(true) statements. [2021-11-02 14:01:46,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 02:01:46 BoogieIcfgContainer [2021-11-02 14:01:46,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 14:01:46,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 14:01:46,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 14:01:46,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 14:01:46,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 02:01:37" (1/3) ... [2021-11-02 14:01:46,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16eb73bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 02:01:46, skipping insertion in model container [2021-11-02 14:01:46,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:01:39" (2/3) ... [2021-11-02 14:01:46,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16eb73bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 02:01:46, skipping insertion in model container [2021-11-02 14:01:46,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 02:01:46" (3/3) ... [2021-11-02 14:01:46,085 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_up_harness.i [2021-11-02 14:01:46,094 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 14:01:46,095 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2021-11-02 14:01:46,147 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 14:01:46,159 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 [2021-11-02 14:01:46,159 INFO L340 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2021-11-02 14:01:46,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 994 states, 968 states have (on average 1.4287190082644627) internal successors, (1383), 993 states have internal predecessors, (1383), 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) [2021-11-02 14:01:46,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-02 14:01:46,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:01:46,201 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] [2021-11-02 14:01:46,202 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:01:46,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:01:46,207 INFO L85 PathProgramCache]: Analyzing trace with hash -97697725, now seen corresponding path program 1 times [2021-11-02 14:01:46,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:01:46,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998020801] [2021-11-02 14:01:46,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:01:46,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:01:46,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:01:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:01:46,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:01:46,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998020801] [2021-11-02 14:01:46,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998020801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:01:46,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:01:46,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 14:01:46,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815669830] [2021-11-02 14:01:46,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 14:01:46,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:01:46,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 14:01:46,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 14:01:46,824 INFO L87 Difference]: Start difference. First operand has 994 states, 968 states have (on average 1.4287190082644627) internal successors, (1383), 993 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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) [2021-11-02 14:01:48,909 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:01:53,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:01:53,616 INFO L93 Difference]: Finished difference Result 1982 states and 2759 transitions. [2021-11-02 14:01:53,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 14:01:53,619 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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 42 [2021-11-02 14:01:53,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:01:53,640 INFO L225 Difference]: With dead ends: 1982 [2021-11-02 14:01:53,641 INFO L226 Difference]: Without dead ends: 989 [2021-11-02 14:01:53,649 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 [2021-11-02 14:01:53,657 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6020.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.58ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6611.36ms IncrementalHoareTripleChecker+Time [2021-11-02 14:01:53,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1282 Unknown, 0 Unchecked, 12.58ms Time], IncrementalHoareTripleChecker [0 Valid, 1281 Invalid, 1 Unknown, 0 Unchecked, 6611.36ms Time] [2021-11-02 14:01:53,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2021-11-02 14:01:53,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 989. [2021-11-02 14:01:53,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 964 states have (on average 1.3246887966804979) internal successors, (1277), 988 states have internal predecessors, (1277), 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) [2021-11-02 14:01:53,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1277 transitions. [2021-11-02 14:01:53,750 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1277 transitions. Word has length 42 [2021-11-02 14:01:53,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:01:53,750 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1277 transitions. [2021-11-02 14:01:53,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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) [2021-11-02 14:01:53,751 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1277 transitions. [2021-11-02 14:01:53,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-02 14:01:53,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:01:53,752 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] [2021-11-02 14:01:53,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 14:01:53,753 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:01:53,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:01:53,753 INFO L85 PathProgramCache]: Analyzing trace with hash 268775359, now seen corresponding path program 1 times [2021-11-02 14:01:53,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:01:53,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968376104] [2021-11-02 14:01:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:01:53,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:01:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:01:54,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:01:54,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:01:54,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968376104] [2021-11-02 14:01:54,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968376104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:01:54,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:01:54,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 14:01:54,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806027262] [2021-11-02 14:01:54,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:01:54,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:01:54,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:01:54,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:01:54,024 INFO L87 Difference]: Start difference. First operand 989 states and 1277 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2021-11-02 14:01:56,084 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:02:03,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:02:03,481 INFO L93 Difference]: Finished difference Result 2111 states and 2719 transitions. [2021-11-02 14:02:03,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 14:02:03,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2021-11-02 14:02:03,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:02:03,486 INFO L225 Difference]: With dead ends: 2111 [2021-11-02 14:02:03,487 INFO L226 Difference]: Without dead ends: 1202 [2021-11-02 14:02:03,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.56ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:02:03,489 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1523 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 2292 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8512.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.01ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2292 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9219.30ms IncrementalHoareTripleChecker+Time [2021-11-02 14:02:03,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1523 Valid, 0 Invalid, 2297 Unknown, 0 Unchecked, 28.01ms Time], IncrementalHoareTripleChecker [4 Valid, 2292 Invalid, 1 Unknown, 0 Unchecked, 9219.30ms Time] [2021-11-02 14:02:03,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2021-11-02 14:02:03,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 989. [2021-11-02 14:02:03,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 964 states have (on average 1.3215767634854771) internal successors, (1274), 988 states have internal predecessors, (1274), 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) [2021-11-02 14:02:03,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1274 transitions. [2021-11-02 14:02:03,513 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1274 transitions. Word has length 42 [2021-11-02 14:02:03,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:02:03,514 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1274 transitions. [2021-11-02 14:02:03,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2021-11-02 14:02:03,514 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1274 transitions. [2021-11-02 14:02:03,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-02 14:02:03,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:02:03,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:02:03,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 14:02:03,516 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:02:03,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:02:03,517 INFO L85 PathProgramCache]: Analyzing trace with hash 82325853, now seen corresponding path program 1 times [2021-11-02 14:02:03,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:02:03,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198736802] [2021-11-02 14:02:03,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:02:03,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:02:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:02:03,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:02:03,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:02:03,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198736802] [2021-11-02 14:02:03,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198736802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:02:03,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:02:03,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 14:02:03,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432044410] [2021-11-02 14:02:03,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 14:02:03,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:02:03,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 14:02:03,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:02:03,817 INFO L87 Difference]: Start difference. First operand 989 states and 1274 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:02:05,867 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 [] [2021-11-02 14:02:15,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:02:15,446 INFO L93 Difference]: Finished difference Result 2623 states and 3352 transitions. [2021-11-02 14:02:15,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 14:02:15,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-02 14:02:15,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:02:15,462 INFO L225 Difference]: With dead ends: 2623 [2021-11-02 14:02:15,462 INFO L226 Difference]: Without dead ends: 1682 [2021-11-02 14:02:15,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 121.70ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 14:02:15,469 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3331 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 3502 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10481.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3331 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.49ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 3502 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11334.01ms IncrementalHoareTripleChecker+Time [2021-11-02 14:02:15,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3331 Valid, 0 Invalid, 3526 Unknown, 0 Unchecked, 34.49ms Time], IncrementalHoareTripleChecker [23 Valid, 3502 Invalid, 1 Unknown, 0 Unchecked, 11334.01ms Time] [2021-11-02 14:02:15,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2021-11-02 14:02:15,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 989. [2021-11-02 14:02:15,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 964 states have (on average 1.3184647302904564) internal successors, (1271), 988 states have internal predecessors, (1271), 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) [2021-11-02 14:02:15,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1271 transitions. [2021-11-02 14:02:15,506 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1271 transitions. Word has length 50 [2021-11-02 14:02:15,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:02:15,507 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1271 transitions. [2021-11-02 14:02:15,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:02:15,507 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1271 transitions. [2021-11-02 14:02:15,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 14:02:15,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:02:15,509 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] [2021-11-02 14:02:15,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 14:02:15,510 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:02:15,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:02:15,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1376076053, now seen corresponding path program 1 times [2021-11-02 14:02:15,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:02:15,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209166643] [2021-11-02 14:02:15,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:02:15,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:02:15,617 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:02:15,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1889654341] [2021-11-02 14:02:15,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:02:15,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:02:15,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:02:15,625 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) [2021-11-02 14:02:15,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 14:02:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:02:16,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 2618 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 14:02:16,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:02:17,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:02:17,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:02:17,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:02:17,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209166643] [2021-11-02 14:02:17,053 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:02:17,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889654341] [2021-11-02 14:02:17,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889654341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:02:17,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:02:17,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 14:02:17,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132932021] [2021-11-02 14:02:17,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 14:02:17,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:02:17,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 14:02:17,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:02:17,054 INFO L87 Difference]: Start difference. First operand 989 states and 1271 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 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) [2021-11-02 14:02:19,104 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 [] [2021-11-02 14:02:29,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:02:29,214 INFO L93 Difference]: Finished difference Result 2802 states and 3579 transitions. [2021-11-02 14:02:29,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 14:02:29,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 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 66 [2021-11-02 14:02:29,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:02:29,223 INFO L225 Difference]: With dead ends: 2802 [2021-11-02 14:02:29,223 INFO L226 Difference]: Without dead ends: 1892 [2021-11-02 14:02:29,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 242.47ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-02 14:02:29,226 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6649 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 3343 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10812.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6649 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.47ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3343 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11742.82ms IncrementalHoareTripleChecker+Time [2021-11-02 14:02:29,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6649 Valid, 0 Invalid, 3361 Unknown, 0 Unchecked, 41.47ms Time], IncrementalHoareTripleChecker [17 Valid, 3343 Invalid, 1 Unknown, 0 Unchecked, 11742.82ms Time] [2021-11-02 14:02:29,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2021-11-02 14:02:29,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 989. [2021-11-02 14:02:29,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 964 states have (on average 1.3153526970954357) internal successors, (1268), 988 states have internal predecessors, (1268), 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) [2021-11-02 14:02:29,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1268 transitions. [2021-11-02 14:02:29,262 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1268 transitions. Word has length 66 [2021-11-02 14:02:29,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:02:29,262 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1268 transitions. [2021-11-02 14:02:29,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 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) [2021-11-02 14:02:29,263 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1268 transitions. [2021-11-02 14:02:29,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-02 14:02:29,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:02:29,265 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] [2021-11-02 14:02:29,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 14:02:29,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:02:29,488 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:02:29,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:02:29,489 INFO L85 PathProgramCache]: Analyzing trace with hash 726765177, now seen corresponding path program 1 times [2021-11-02 14:02:29,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:02:29,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866540260] [2021-11-02 14:02:29,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:02:29,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:02:29,582 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:02:29,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232407718] [2021-11-02 14:02:29,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:02:29,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:02:29,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:02:29,585 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) [2021-11-02 14:02:29,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 14:02:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:02:30,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 2723 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 14:02:30,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:02:30,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:02:30,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:02:30,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:02:30,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866540260] [2021-11-02 14:02:30,868 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:02:30,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232407718] [2021-11-02 14:02:30,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232407718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:02:30,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:02:30,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 14:02:30,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045078427] [2021-11-02 14:02:30,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 14:02:30,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:02:30,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 14:02:30,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:02:30,871 INFO L87 Difference]: Start difference. First operand 989 states and 1268 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 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) [2021-11-02 14:02:32,907 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 [] [2021-11-02 14:02:44,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:02:44,486 INFO L93 Difference]: Finished difference Result 2827 states and 3607 transitions. [2021-11-02 14:02:44,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 14:02:44,486 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 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 90 [2021-11-02 14:02:44,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:02:44,493 INFO L225 Difference]: With dead ends: 2827 [2021-11-02 14:02:44,493 INFO L226 Difference]: Without dead ends: 1901 [2021-11-02 14:02:44,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 289.29ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-02 14:02:44,496 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6894 mSDsluCounter, 2738 mSDsCounter, 0 mSdLazyCounter, 4367 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12269.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6894 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.47ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 4367 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13151.86ms IncrementalHoareTripleChecker+Time [2021-11-02 14:02:44,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6894 Valid, 0 Invalid, 4414 Unknown, 0 Unchecked, 44.47ms Time], IncrementalHoareTripleChecker [46 Valid, 4367 Invalid, 1 Unknown, 0 Unchecked, 13151.86ms Time] [2021-11-02 14:02:44,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1901 states. [2021-11-02 14:02:44,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1901 to 989. [2021-11-02 14:02:44,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 964 states have (on average 1.312240663900415) internal successors, (1265), 988 states have internal predecessors, (1265), 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) [2021-11-02 14:02:44,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1265 transitions. [2021-11-02 14:02:44,530 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1265 transitions. Word has length 90 [2021-11-02 14:02:44,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:02:44,530 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1265 transitions. [2021-11-02 14:02:44,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 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) [2021-11-02 14:02:44,530 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1265 transitions. [2021-11-02 14:02:44,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-02 14:02:44,531 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:02:44,532 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] [2021-11-02 14:02:44,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 14:02:44,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:02:44,755 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:02:44,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:02:44,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1774462527, now seen corresponding path program 1 times [2021-11-02 14:02:44,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:02:44,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790908652] [2021-11-02 14:02:44,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:02:44,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:02:44,846 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:02:44,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [16266333] [2021-11-02 14:02:44,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:02:44,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:02:44,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:02:44,848 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) [2021-11-02 14:02:44,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 14:02:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:02:45,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 2913 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 14:02:45,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:02:46,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:02:46,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:02:46,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:02:46,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790908652] [2021-11-02 14:02:46,330 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:02:46,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16266333] [2021-11-02 14:02:46,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16266333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:02:46,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:02:46,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 14:02:46,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579026690] [2021-11-02 14:02:46,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 14:02:46,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:02:46,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 14:02:46,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:02:46,332 INFO L87 Difference]: Start difference. First operand 989 states and 1265 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 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) [2021-11-02 14:02:48,370 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 [] [2021-11-02 14:02:53,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:02:53,885 INFO L93 Difference]: Finished difference Result 2039 states and 2607 transitions. [2021-11-02 14:02:53,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 14:02:53,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 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 106 [2021-11-02 14:02:53,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:02:53,890 INFO L225 Difference]: With dead ends: 2039 [2021-11-02 14:02:53,890 INFO L226 Difference]: Without dead ends: 1202 [2021-11-02 14:02:53,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 158.58ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-02 14:02:53,893 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5474 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6668.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5474 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.94ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7318.17ms IncrementalHoareTripleChecker+Time [2021-11-02 14:02:53,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5474 Valid, 0 Invalid, 1815 Unknown, 0 Unchecked, 15.94ms Time], IncrementalHoareTripleChecker [17 Valid, 1797 Invalid, 1 Unknown, 0 Unchecked, 7318.17ms Time] [2021-11-02 14:02:53,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2021-11-02 14:02:53,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 989. [2021-11-02 14:02:53,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 964 states have (on average 1.3101659751037344) internal successors, (1263), 988 states have internal predecessors, (1263), 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) [2021-11-02 14:02:53,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1263 transitions. [2021-11-02 14:02:53,925 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1263 transitions. Word has length 106 [2021-11-02 14:02:53,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:02:53,926 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1263 transitions. [2021-11-02 14:02:53,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 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) [2021-11-02 14:02:53,926 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1263 transitions. [2021-11-02 14:02:53,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-02 14:02:53,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:02:53,927 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] [2021-11-02 14:02:53,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-02 14:02:54,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:02:54,144 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:02:54,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:02:54,144 INFO L85 PathProgramCache]: Analyzing trace with hash 2044010096, now seen corresponding path program 1 times [2021-11-02 14:02:54,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:02:54,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395398187] [2021-11-02 14:02:54,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:02:54,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:02:54,234 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:02:54,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [274863515] [2021-11-02 14:02:54,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:02:54,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:02:54,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:02:54,236 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) [2021-11-02 14:02:54,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 14:02:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:02:55,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 2944 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 14:02:55,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:02:55,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:02:55,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:02:55,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:02:55,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395398187] [2021-11-02 14:02:55,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:02:55,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274863515] [2021-11-02 14:02:55,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274863515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:02:55,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:02:55,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 14:02:55,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644988578] [2021-11-02 14:02:55,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 14:02:55,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:02:55,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 14:02:55,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:02:55,872 INFO L87 Difference]: Start difference. First operand 989 states and 1263 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 6 states have internal predecessors, (110), 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) [2021-11-02 14:02:57,924 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 [] [2021-11-02 14:03:05,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:03:05,992 INFO L93 Difference]: Finished difference Result 2079 states and 2651 transitions. [2021-11-02 14:03:05,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 14:03:05,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 6 states have internal predecessors, (110), 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 110 [2021-11-02 14:03:05,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:03:05,997 INFO L225 Difference]: With dead ends: 2079 [2021-11-02 14:03:05,997 INFO L226 Difference]: Without dead ends: 1242 [2021-11-02 14:03:05,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 301.33ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-02 14:03:06,000 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5877 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 2898 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8848.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5877 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.02ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2898 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9760.78ms IncrementalHoareTripleChecker+Time [2021-11-02 14:03:06,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5877 Valid, 0 Invalid, 2938 Unknown, 0 Unchecked, 25.02ms Time], IncrementalHoareTripleChecker [39 Valid, 2898 Invalid, 1 Unknown, 0 Unchecked, 9760.78ms Time] [2021-11-02 14:03:06,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2021-11-02 14:03:06,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 989. [2021-11-02 14:03:06,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 964 states have (on average 1.3060165975103735) internal successors, (1259), 988 states have internal predecessors, (1259), 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) [2021-11-02 14:03:06,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1259 transitions. [2021-11-02 14:03:06,035 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1259 transitions. Word has length 110 [2021-11-02 14:03:06,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:03:06,036 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1259 transitions. [2021-11-02 14:03:06,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 6 states have internal predecessors, (110), 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) [2021-11-02 14:03:06,036 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1259 transitions. [2021-11-02 14:03:06,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-02 14:03:06,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:03:06,037 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] [2021-11-02 14:03:06,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 14:03:06,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:03:06,255 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:03:06,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:03:06,256 INFO L85 PathProgramCache]: Analyzing trace with hash -22427764, now seen corresponding path program 1 times [2021-11-02 14:03:06,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:03:06,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411953990] [2021-11-02 14:03:06,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:03:06,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:03:06,349 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:03:06,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1566360770] [2021-11-02 14:03:06,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:03:06,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:03:06,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:03:06,351 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) [2021-11-02 14:03:06,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 14:03:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:03:07,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 3039 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 14:03:07,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:03:07,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:03:07,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:03:07,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:03:07,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411953990] [2021-11-02 14:03:07,802 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:03:07,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566360770] [2021-11-02 14:03:07,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566360770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:03:07,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:03:07,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 14:03:07,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016716732] [2021-11-02 14:03:07,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 14:03:07,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:03:07,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 14:03:07,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:03:07,805 INFO L87 Difference]: Start difference. First operand 989 states and 1259 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 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) [2021-11-02 14:03:09,844 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 [] [2021-11-02 14:03:16,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:03:16,663 INFO L93 Difference]: Finished difference Result 2316 states and 2943 transitions. [2021-11-02 14:03:16,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 14:03:16,664 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 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 118 [2021-11-02 14:03:16,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:03:16,668 INFO L225 Difference]: With dead ends: 2316 [2021-11-02 14:03:16,668 INFO L226 Difference]: Without dead ends: 1479 [2021-11-02 14:03:16,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 290.94ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-02 14:03:16,671 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7909 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7700.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7909 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.61ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8486.58ms IncrementalHoareTripleChecker+Time [2021-11-02 14:03:16,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7909 Valid, 0 Invalid, 2282 Unknown, 0 Unchecked, 21.61ms Time], IncrementalHoareTripleChecker [42 Valid, 2239 Invalid, 1 Unknown, 0 Unchecked, 8486.58ms Time] [2021-11-02 14:03:16,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2021-11-02 14:03:16,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 989. [2021-11-02 14:03:16,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 964 states have (on average 1.303941908713693) internal successors, (1257), 988 states have internal predecessors, (1257), 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) [2021-11-02 14:03:16,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1257 transitions. [2021-11-02 14:03:16,704 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1257 transitions. Word has length 118 [2021-11-02 14:03:16,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:03:16,704 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1257 transitions. [2021-11-02 14:03:16,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 6 states have internal predecessors, (118), 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) [2021-11-02 14:03:16,704 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1257 transitions. [2021-11-02 14:03:16,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-02 14:03:16,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:03:16,706 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] [2021-11-02 14:03:16,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 14:03:16,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:03:16,932 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:03:16,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:03:16,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1548527879, now seen corresponding path program 1 times [2021-11-02 14:03:16,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:03:16,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942973797] [2021-11-02 14:03:16,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:03:16,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:03:17,006 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:03:17,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [377298540] [2021-11-02 14:03:17,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:03:17,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:03:17,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:03:17,008 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) [2021-11-02 14:03:17,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 14:03:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:03:17,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 3093 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 14:03:17,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:03:18,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:03:18,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:03:18,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:03:18,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942973797] [2021-11-02 14:03:18,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:03:18,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377298540] [2021-11-02 14:03:18,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377298540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:03:18,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:03:18,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 14:03:18,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846330805] [2021-11-02 14:03:18,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 14:03:18,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:03:18,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 14:03:18,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 14:03:18,540 INFO L87 Difference]: Start difference. First operand 989 states and 1257 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 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) [2021-11-02 14:03:20,670 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 [] [2021-11-02 14:03:31,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:03:31,508 INFO L93 Difference]: Finished difference Result 2068 states and 2639 transitions. [2021-11-02 14:03:31,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 14:03:31,509 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 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 127 [2021-11-02 14:03:31,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:03:31,512 INFO L225 Difference]: With dead ends: 2068 [2021-11-02 14:03:31,512 INFO L226 Difference]: Without dead ends: 1231 [2021-11-02 14:03:31,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 288.51ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-02 14:03:31,515 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5521 mSDsluCounter, 2605 mSDsCounter, 0 mSdLazyCounter, 4387 mSolverCounterSat, 72 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11604.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5521 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.46ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 4387 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12588.10ms IncrementalHoareTripleChecker+Time [2021-11-02 14:03:31,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5521 Valid, 0 Invalid, 4460 Unknown, 0 Unchecked, 32.46ms Time], IncrementalHoareTripleChecker [72 Valid, 4387 Invalid, 1 Unknown, 0 Unchecked, 12588.10ms Time] [2021-11-02 14:03:31,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2021-11-02 14:03:31,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 989. [2021-11-02 14:03:31,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 964 states have (on average 1.295643153526971) internal successors, (1249), 988 states have internal predecessors, (1249), 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) [2021-11-02 14:03:31,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1249 transitions. [2021-11-02 14:03:31,556 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1249 transitions. Word has length 127 [2021-11-02 14:03:31,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:03:31,557 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1249 transitions. [2021-11-02 14:03:31,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 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) [2021-11-02 14:03:31,557 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1249 transitions. [2021-11-02 14:03:31,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-02 14:03:31,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:03:31,559 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] [2021-11-02 14:03:31,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 14:03:31,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:03:31,781 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:03:31,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:03:31,781 INFO L85 PathProgramCache]: Analyzing trace with hash -197690883, now seen corresponding path program 1 times [2021-11-02 14:03:31,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:03:31,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095266004] [2021-11-02 14:03:31,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:03:31,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:03:31,880 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:03:31,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163716781] [2021-11-02 14:03:31,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:03:31,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:03:31,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:03:31,882 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) [2021-11-02 14:03:31,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 14:03:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:03:32,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 3089 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 14:03:32,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:03:33,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:03:33,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:03:33,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:03:33,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095266004] [2021-11-02 14:03:33,397 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:03:33,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163716781] [2021-11-02 14:03:33,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163716781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:03:33,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:03:33,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 14:03:33,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678932543] [2021-11-02 14:03:33,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 14:03:33,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:03:33,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 14:03:33,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:03:33,399 INFO L87 Difference]: Start difference. First operand 989 states and 1249 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 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) [2021-11-02 14:03:35,435 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 [] [2021-11-02 14:03:44,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:03:44,969 INFO L93 Difference]: Finished difference Result 2354 states and 2956 transitions. [2021-11-02 14:03:44,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 14:03:44,970 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 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 130 [2021-11-02 14:03:44,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:03:44,974 INFO L225 Difference]: With dead ends: 2354 [2021-11-02 14:03:44,974 INFO L226 Difference]: Without dead ends: 1517 [2021-11-02 14:03:44,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 313.09ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-11-02 14:03:44,976 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6446 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 3143 mSolverCounterSat, 60 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10105.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6446 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.62ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 3143 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11098.81ms IncrementalHoareTripleChecker+Time [2021-11-02 14:03:44,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6446 Valid, 0 Invalid, 3204 Unknown, 0 Unchecked, 31.62ms Time], IncrementalHoareTripleChecker [60 Valid, 3143 Invalid, 1 Unknown, 0 Unchecked, 11098.81ms Time] [2021-11-02 14:03:44,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2021-11-02 14:03:45,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 989. [2021-11-02 14:03:45,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 964 states have (on average 1.2935684647302905) internal successors, (1247), 988 states have internal predecessors, (1247), 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) [2021-11-02 14:03:45,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1247 transitions. [2021-11-02 14:03:45,014 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1247 transitions. Word has length 130 [2021-11-02 14:03:45,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:03:45,015 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1247 transitions. [2021-11-02 14:03:45,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 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) [2021-11-02 14:03:45,015 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1247 transitions. [2021-11-02 14:03:45,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-02 14:03:45,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:03:45,017 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] [2021-11-02 14:03:45,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-02 14:03:45,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:03:45,235 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:03:45,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:03:45,235 INFO L85 PathProgramCache]: Analyzing trace with hash -2058424223, now seen corresponding path program 1 times [2021-11-02 14:03:45,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:03:45,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945254971] [2021-11-02 14:03:45,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:03:45,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:03:45,313 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:03:45,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1339918647] [2021-11-02 14:03:45,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:03:45,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:03:45,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:03:45,315 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) [2021-11-02 14:03:45,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 14:03:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:03:46,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 3184 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 14:03:46,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:03:46,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:03:46,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:03:46,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:03:46,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945254971] [2021-11-02 14:03:46,730 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:03:46,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339918647] [2021-11-02 14:03:46,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339918647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:03:46,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:03:46,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 14:03:46,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438546399] [2021-11-02 14:03:46,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 14:03:46,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:03:46,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 14:03:46,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:03:46,732 INFO L87 Difference]: Start difference. First operand 989 states and 1247 transitions. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 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) [2021-11-02 14:03:48,785 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 [] [2021-11-02 14:04:14,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:04:14,130 INFO L93 Difference]: Finished difference Result 2701 states and 3402 transitions. [2021-11-02 14:04:14,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 14:04:14,132 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 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 [2021-11-02 14:04:14,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:04:14,137 INFO L225 Difference]: With dead ends: 2701 [2021-11-02 14:04:14,137 INFO L226 Difference]: Without dead ends: 1781 [2021-11-02 14:04:14,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 393.52ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-02 14:04:14,140 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 937 mSDsluCounter, 5601 mSDsCounter, 0 mSdLazyCounter, 9071 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24633.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.77ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 9071 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26819.18ms IncrementalHoareTripleChecker+Time [2021-11-02 14:04:14,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [937 Valid, 0 Invalid, 9115 Unknown, 0 Unchecked, 53.77ms Time], IncrementalHoareTripleChecker [43 Valid, 9071 Invalid, 1 Unknown, 0 Unchecked, 26819.18ms Time] [2021-11-02 14:04:14,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2021-11-02 14:04:14,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1013. [2021-11-02 14:04:14,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 988 states have (on average 1.29251012145749) internal successors, (1277), 1012 states have internal predecessors, (1277), 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) [2021-11-02 14:04:14,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1277 transitions. [2021-11-02 14:04:14,188 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1277 transitions. Word has length 138 [2021-11-02 14:04:14,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:04:14,188 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 1277 transitions. [2021-11-02 14:04:14,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 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) [2021-11-02 14:04:14,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1277 transitions. [2021-11-02 14:04:14,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-02 14:04:14,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:04:14,190 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] [2021-11-02 14:04:14,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-02 14:04:14,403 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,SelfDestructingSolverStorable10 [2021-11-02 14:04:14,404 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:04:14,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:04:14,404 INFO L85 PathProgramCache]: Analyzing trace with hash -520084193, now seen corresponding path program 1 times [2021-11-02 14:04:14,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:04:14,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524315193] [2021-11-02 14:04:14,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:04:14,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:04:14,471 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:04:14,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14228579] [2021-11-02 14:04:14,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:04:14,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:04:14,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:04:14,474 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) [2021-11-02 14:04:14,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 14:04:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:04:15,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 3181 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 14:04:15,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:04:15,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:04:15,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:04:15,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:04:15,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524315193] [2021-11-02 14:04:15,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:04:15,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14228579] [2021-11-02 14:04:15,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14228579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:04:15,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:04:15,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 14:04:15,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533741748] [2021-11-02 14:04:15,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:04:15,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:04:15,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:04:15,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:04:15,656 INFO L87 Difference]: Start difference. First operand 1013 states and 1277 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 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) [2021-11-02 14:04:18,185 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:04:30,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:04:30,042 INFO L93 Difference]: Finished difference Result 1975 states and 2490 transitions. [2021-11-02 14:04:30,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 14:04:30,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 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 [2021-11-02 14:04:30,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:04:30,046 INFO L225 Difference]: With dead ends: 1975 [2021-11-02 14:04:30,046 INFO L226 Difference]: Without dead ends: 1037 [2021-11-02 14:04:30,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.16ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:04:30,047 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 2426 mSDsCounter, 0 mSdLazyCounter, 3758 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13010.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.82ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 3758 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14193.70ms IncrementalHoareTripleChecker+Time [2021-11-02 14:04:30,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 3780 Unknown, 0 Unchecked, 19.82ms Time], IncrementalHoareTripleChecker [21 Valid, 3758 Invalid, 1 Unknown, 0 Unchecked, 14193.70ms Time] [2021-11-02 14:04:30,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2021-11-02 14:04:30,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1025. [2021-11-02 14:04:30,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 1000 states have (on average 1.289) internal successors, (1289), 1024 states have internal predecessors, (1289), 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) [2021-11-02 14:04:30,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1289 transitions. [2021-11-02 14:04:30,091 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1289 transitions. Word has length 138 [2021-11-02 14:04:30,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:04:30,092 INFO L470 AbstractCegarLoop]: Abstraction has 1025 states and 1289 transitions. [2021-11-02 14:04:30,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 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) [2021-11-02 14:04:30,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1289 transitions. [2021-11-02 14:04:30,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-02 14:04:30,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:04:30,094 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] [2021-11-02 14:04:30,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-02 14:04:30,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:04:30,325 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:04:30,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:04:30,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1001164451, now seen corresponding path program 1 times [2021-11-02 14:04:30,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:04:30,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284581734] [2021-11-02 14:04:30,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:04:30,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:04:30,470 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:04:30,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538790815] [2021-11-02 14:04:30,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:04:30,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:04:30,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:04:30,488 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) [2021-11-02 14:04:30,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-02 14:04:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:04:31,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 3176 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-02 14:04:31,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:04:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:04:31,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:04:31,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:04:31,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284581734] [2021-11-02 14:04:31,923 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:04:31,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538790815] [2021-11-02 14:04:31,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538790815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:04:31,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:04:31,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 14:04:31,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59063878] [2021-11-02 14:04:31,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 14:04:31,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:04:31,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 14:04:31,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:04:31,925 INFO L87 Difference]: Start difference. First operand 1025 states and 1289 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 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) [2021-11-02 14:04:33,979 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 [] [2021-11-02 14:04:56,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:04:56,565 INFO L93 Difference]: Finished difference Result 2810 states and 3526 transitions. [2021-11-02 14:04:56,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 14:04:56,565 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 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 [2021-11-02 14:04:56,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:04:56,570 INFO L225 Difference]: With dead ends: 2810 [2021-11-02 14:04:56,570 INFO L226 Difference]: Without dead ends: 1869 [2021-11-02 14:04:56,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 74.97ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:04:56,572 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1079 mSDsluCounter, 5528 mSDsCounter, 0 mSdLazyCounter, 7878 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22407.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.74ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 7878 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24287.87ms IncrementalHoareTripleChecker+Time [2021-11-02 14:04:56,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1079 Valid, 0 Invalid, 7905 Unknown, 0 Unchecked, 41.74ms Time], IncrementalHoareTripleChecker [26 Valid, 7878 Invalid, 1 Unknown, 0 Unchecked, 24287.87ms Time] [2021-11-02 14:04:56,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2021-11-02 14:04:56,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1073. [2021-11-02 14:04:56,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1048 states have (on average 1.2872137404580153) internal successors, (1349), 1072 states have internal predecessors, (1349), 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) [2021-11-02 14:04:56,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1349 transitions. [2021-11-02 14:04:56,619 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1349 transitions. Word has length 138 [2021-11-02 14:04:56,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:04:56,619 INFO L470 AbstractCegarLoop]: Abstraction has 1073 states and 1349 transitions. [2021-11-02 14:04:56,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 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) [2021-11-02 14:04:56,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1349 transitions. [2021-11-02 14:04:56,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-02 14:04:56,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:04:56,621 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] [2021-11-02 14:04:56,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-02 14:04:56,831 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,SelfDestructingSolverStorable12 [2021-11-02 14:04:56,831 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:04:56,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:04:56,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1005834329, now seen corresponding path program 1 times [2021-11-02 14:04:56,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:04:56,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686409611] [2021-11-02 14:04:56,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:04:56,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:04:56,908 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:04:56,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407886586] [2021-11-02 14:04:56,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:04:56,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:04:56,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:04:56,910 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) [2021-11-02 14:04:56,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-02 14:04:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:04:57,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 3170 conjuncts, 129 conjunts are in the unsatisfiable core [2021-11-02 14:04:57,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:05:00,003 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-02 14:05:00,004 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 45 treesize of output 41 [2021-11-02 14:05:00,072 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-02 14:05:00,074 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 38 treesize of output 34 [2021-11-02 14:05:00,378 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 31 treesize of output 15 [2021-11-02 14:05:00,386 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 [2021-11-02 14:05:01,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:05:01,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:05:01,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:05:01,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686409611] [2021-11-02 14:05:01,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:05:01,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407886586] [2021-11-02 14:05:01,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407886586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:05:01,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:05:01,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-02 14:05:01,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829813032] [2021-11-02 14:05:01,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-02 14:05:01,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:05:01,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-02 14:05:01,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2021-11-02 14:05:01,451 INFO L87 Difference]: Start difference. First operand 1073 states and 1349 transitions. Second operand has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 22 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) [2021-11-02 14:05:03,493 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 [] [2021-11-02 14:07:21,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:07:21,837 INFO L93 Difference]: Finished difference Result 6677 states and 8289 transitions. [2021-11-02 14:07:21,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-11-02 14:07:21,837 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 22 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 [2021-11-02 14:07:21,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:07:21,853 INFO L225 Difference]: With dead ends: 6677 [2021-11-02 14:07:21,853 INFO L226 Difference]: Without dead ends: 5696 [2021-11-02 14:07:21,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2336 ImplicationChecksByTransitivity, 9714.15ms TimeCoverageRelationStatistics Valid=1115, Invalid=6025, Unknown=0, NotChecked=0, Total=7140 [2021-11-02 14:07:21,856 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9478 mSDsluCounter, 36160 mSDsCounter, 0 mSdLazyCounter, 48610 mSolverCounterSat, 563 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 121550.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9478 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 49174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 361.83ms SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 48610 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 129970.98ms IncrementalHoareTripleChecker+Time [2021-11-02 14:07:21,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9478 Valid, 0 Invalid, 49174 Unknown, 0 Unchecked, 361.83ms Time], IncrementalHoareTripleChecker [563 Valid, 48610 Invalid, 1 Unknown, 0 Unchecked, 129970.98ms Time] [2021-11-02 14:07:21,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2021-11-02 14:07:21,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 1889. [2021-11-02 14:07:21,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1864 states have (on average 1.2913090128755365) internal successors, (2407), 1888 states have internal predecessors, (2407), 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) [2021-11-02 14:07:21,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2407 transitions. [2021-11-02 14:07:21,978 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2407 transitions. Word has length 138 [2021-11-02 14:07:21,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:07:21,978 INFO L470 AbstractCegarLoop]: Abstraction has 1889 states and 2407 transitions. [2021-11-02 14:07:21,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 22 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) [2021-11-02 14:07:21,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2407 transitions. [2021-11-02 14:07:21,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-02 14:07:21,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:07:21,980 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] [2021-11-02 14:07:22,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-02 14:07:22,195 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,SelfDestructingSolverStorable13 [2021-11-02 14:07:22,196 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:07:22,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:07:22,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1660266589, now seen corresponding path program 1 times [2021-11-02 14:07:22,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:07:22,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202040555] [2021-11-02 14:07:22,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:07:22,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:07:22,272 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:07:22,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945705387] [2021-11-02 14:07:22,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:07:22,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:07:22,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:07:22,274 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) [2021-11-02 14:07:22,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-02 14:07:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:07:23,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 3160 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 14:07:23,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:07:23,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:07:23,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:07:23,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:07:23,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202040555] [2021-11-02 14:07:23,431 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:07:23,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945705387] [2021-11-02 14:07:23,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945705387] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:07:23,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:07:23,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 14:07:23,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044157260] [2021-11-02 14:07:23,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:07:23,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:07:23,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:07:23,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:07:23,432 INFO L87 Difference]: Start difference. First operand 1889 states and 2407 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 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) [2021-11-02 14:07:25,471 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 [] [2021-11-02 14:07:36,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:07:36,450 INFO L93 Difference]: Finished difference Result 4037 states and 5184 transitions. [2021-11-02 14:07:36,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 14:07:36,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 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 [2021-11-02 14:07:36,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:07:36,458 INFO L225 Difference]: With dead ends: 4037 [2021-11-02 14:07:36,458 INFO L226 Difference]: Without dead ends: 2195 [2021-11-02 14:07:36,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.27ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:07:36,461 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 254 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 3895 mSolverCounterSat, 137 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11611.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.92ms SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 3895 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12780.30ms IncrementalHoareTripleChecker+Time [2021-11-02 14:07:36,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 0 Invalid, 4033 Unknown, 0 Unchecked, 17.92ms Time], IncrementalHoareTripleChecker [137 Valid, 3895 Invalid, 1 Unknown, 0 Unchecked, 12780.30ms Time] [2021-11-02 14:07:36,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2021-11-02 14:07:36,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 2007. [2021-11-02 14:07:36,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2007 states, 1982 states have (on average 1.2714429868819375) internal successors, (2520), 2006 states have internal predecessors, (2520), 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) [2021-11-02 14:07:36,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2007 states to 2007 states and 2520 transitions. [2021-11-02 14:07:36,552 INFO L78 Accepts]: Start accepts. Automaton has 2007 states and 2520 transitions. Word has length 138 [2021-11-02 14:07:36,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:07:36,552 INFO L470 AbstractCegarLoop]: Abstraction has 2007 states and 2520 transitions. [2021-11-02 14:07:36,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 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) [2021-11-02 14:07:36,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2007 states and 2520 transitions. [2021-11-02 14:07:36,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-02 14:07:36,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:07:36,554 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] [2021-11-02 14:07:36,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-02 14:07:36,775 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,SelfDestructingSolverStorable14 [2021-11-02 14:07:36,775 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:07:36,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:07:36,776 INFO L85 PathProgramCache]: Analyzing trace with hash 770650181, now seen corresponding path program 1 times [2021-11-02 14:07:36,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:07:36,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087320866] [2021-11-02 14:07:36,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:07:36,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:07:36,839 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:07:36,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [202942908] [2021-11-02 14:07:36,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:07:36,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:07:36,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:07:36,841 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) [2021-11-02 14:07:36,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-02 14:07:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:07:37,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 3180 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-02 14:07:37,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:07:39,206 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 [2021-11-02 14:07:39,214 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 [2021-11-02 14:07:39,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:07:39,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:07:39,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:07:39,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087320866] [2021-11-02 14:07:39,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:07:39,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202942908] [2021-11-02 14:07:39,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202942908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:07:39,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:07:39,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 14:07:39,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457566277] [2021-11-02 14:07:39,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 14:07:39,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:07:39,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 14:07:39,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-02 14:07:39,577 INFO L87 Difference]: Start difference. First operand 2007 states and 2520 transitions. Second operand has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 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) [2021-11-02 14:07:42,392 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:08:35,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:08:35,449 INFO L93 Difference]: Finished difference Result 5656 states and 7075 transitions. [2021-11-02 14:08:35,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 14:08:35,450 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 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 [2021-11-02 14:08:35,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:08:35,457 INFO L225 Difference]: With dead ends: 5656 [2021-11-02 14:08:35,458 INFO L226 Difference]: Without dead ends: 3828 [2021-11-02 14:08:35,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 3442.75ms TimeCoverageRelationStatistics Valid=300, Invalid=890, Unknown=0, NotChecked=0, Total=1190 [2021-11-02 14:08:35,461 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4622 mSDsluCounter, 11351 mSDsCounter, 0 mSdLazyCounter, 16610 mSolverCounterSat, 181 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47846.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4622 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 16792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 127.19ms SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 16610 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52073.52ms IncrementalHoareTripleChecker+Time [2021-11-02 14:08:35,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4622 Valid, 0 Invalid, 16792 Unknown, 0 Unchecked, 127.19ms Time], IncrementalHoareTripleChecker [181 Valid, 16610 Invalid, 1 Unknown, 0 Unchecked, 52073.52ms Time] [2021-11-02 14:08:35,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3828 states. [2021-11-02 14:08:35,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3828 to 2872. [2021-11-02 14:08:35,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2872 states, 2847 states have (on average 1.2729188619599578) internal successors, (3624), 2871 states have internal predecessors, (3624), 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) [2021-11-02 14:08:35,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2872 states to 2872 states and 3624 transitions. [2021-11-02 14:08:35,605 INFO L78 Accepts]: Start accepts. Automaton has 2872 states and 3624 transitions. Word has length 142 [2021-11-02 14:08:35,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:08:35,606 INFO L470 AbstractCegarLoop]: Abstraction has 2872 states and 3624 transitions. [2021-11-02 14:08:35,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 10 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) [2021-11-02 14:08:35,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2872 states and 3624 transitions. [2021-11-02 14:08:35,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-02 14:08:35,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:08:35,613 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] [2021-11-02 14:08:35,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-02 14:08:35,831 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,SelfDestructingSolverStorable15 [2021-11-02 14:08:35,832 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:08:35,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:08:35,832 INFO L85 PathProgramCache]: Analyzing trace with hash 889091655, now seen corresponding path program 1 times [2021-11-02 14:08:35,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:08:35,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302791197] [2021-11-02 14:08:35,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:08:35,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:08:35,903 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:08:35,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [234546913] [2021-11-02 14:08:35,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:08:35,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:08:35,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:08:35,905 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) [2021-11-02 14:08:35,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-02 14:08:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:08:36,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 3175 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 14:08:36,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:08:37,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:08:37,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:08:37,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:08:37,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302791197] [2021-11-02 14:08:37,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:08:37,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234546913] [2021-11-02 14:08:37,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234546913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:08:37,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:08:37,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 14:08:37,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177551155] [2021-11-02 14:08:37,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 14:08:37,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:08:37,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 14:08:37,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:08:37,272 INFO L87 Difference]: Start difference. First operand 2872 states and 3624 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 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) [2021-11-02 14:08:39,313 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 [] [2021-11-02 14:09:01,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:09:01,513 INFO L93 Difference]: Finished difference Result 7258 states and 9132 transitions. [2021-11-02 14:09:01,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 14:09:01,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 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 [2021-11-02 14:09:01,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:09:01,523 INFO L225 Difference]: With dead ends: 7258 [2021-11-02 14:09:01,524 INFO L226 Difference]: Without dead ends: 4434 [2021-11-02 14:09:01,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 242.24ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:09:01,527 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 792 mSDsluCounter, 3602 mSDsCounter, 0 mSdLazyCounter, 7010 mSolverCounterSat, 241 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21229.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.55ms SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 7010 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23704.91ms IncrementalHoareTripleChecker+Time [2021-11-02 14:09:01,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 0 Invalid, 7252 Unknown, 0 Unchecked, 39.55ms Time], IncrementalHoareTripleChecker [241 Valid, 7010 Invalid, 1 Unknown, 0 Unchecked, 23704.91ms Time] [2021-11-02 14:09:01,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4434 states. [2021-11-02 14:09:01,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4434 to 2964. [2021-11-02 14:09:01,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2964 states, 2939 states have (on average 1.2630146308268118) internal successors, (3712), 2963 states have internal predecessors, (3712), 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) [2021-11-02 14:09:01,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2964 states to 2964 states and 3712 transitions. [2021-11-02 14:09:01,659 INFO L78 Accepts]: Start accepts. Automaton has 2964 states and 3712 transitions. Word has length 142 [2021-11-02 14:09:01,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:09:01,660 INFO L470 AbstractCegarLoop]: Abstraction has 2964 states and 3712 transitions. [2021-11-02 14:09:01,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 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) [2021-11-02 14:09:01,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2964 states and 3712 transitions. [2021-11-02 14:09:01,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-02 14:09:01,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:09:01,662 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] [2021-11-02 14:09:01,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-02 14:09:01,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:09:01,863 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:09:01,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:09:01,864 INFO L85 PathProgramCache]: Analyzing trace with hash -977617019, now seen corresponding path program 1 times [2021-11-02 14:09:01,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:09:01,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994910402] [2021-11-02 14:09:01,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:09:01,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:09:01,931 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:09:01,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [626142236] [2021-11-02 14:09:01,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:09:01,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:09:01,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:09:01,933 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) [2021-11-02 14:09:01,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-02 14:09:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:09:02,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 3180 conjuncts, 69 conjunts are in the unsatisfiable core [2021-11-02 14:09:02,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:09:05,182 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 [2021-11-02 14:09:05,191 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 [2021-11-02 14:09:05,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:09:05,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:09:05,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:09:05,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994910402] [2021-11-02 14:09:05,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:09:05,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626142236] [2021-11-02 14:09:05,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626142236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:09:05,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:09:05,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-02 14:09:05,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797845028] [2021-11-02 14:09:05,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 14:09:05,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:09:05,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 14:09:05,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-02 14:09:05,626 INFO L87 Difference]: Start difference. First operand 2964 states and 3712 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) [2021-11-02 14:09:08,478 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:10:24,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:10:24,607 INFO L93 Difference]: Finished difference Result 10965 states and 13588 transitions. [2021-11-02 14:10:24,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-02 14:10:24,608 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 [2021-11-02 14:10:24,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:10:24,620 INFO L225 Difference]: With dead ends: 10965 [2021-11-02 14:10:24,620 INFO L226 Difference]: Without dead ends: 8257 [2021-11-02 14:10:24,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1093 ImplicationChecksByTransitivity, 7404.03ms TimeCoverageRelationStatistics Valid=675, Invalid=2985, Unknown=0, NotChecked=0, Total=3660 [2021-11-02 14:10:24,624 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5049 mSDsluCounter, 15572 mSDsCounter, 0 mSdLazyCounter, 23408 mSolverCounterSat, 532 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65420.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5049 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 23941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 185.77ms SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 23408 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71313.04ms IncrementalHoareTripleChecker+Time [2021-11-02 14:10:24,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5049 Valid, 0 Invalid, 23941 Unknown, 0 Unchecked, 185.77ms Time], IncrementalHoareTripleChecker [532 Valid, 23408 Invalid, 1 Unknown, 0 Unchecked, 71313.04ms Time] [2021-11-02 14:10:24,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8257 states. [2021-11-02 14:10:24,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8257 to 2989. [2021-11-02 14:10:24,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2989 states, 2964 states have (on average 1.2624831309041835) internal successors, (3742), 2988 states have internal predecessors, (3742), 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) [2021-11-02 14:10:24,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2989 states to 2989 states and 3742 transitions. [2021-11-02 14:10:24,743 INFO L78 Accepts]: Start accepts. Automaton has 2989 states and 3742 transitions. Word has length 142 [2021-11-02 14:10:24,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:10:24,743 INFO L470 AbstractCegarLoop]: Abstraction has 2989 states and 3742 transitions. [2021-11-02 14:10:24,743 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) [2021-11-02 14:10:24,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2989 states and 3742 transitions. [2021-11-02 14:10:24,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-02 14:10:24,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:10:24,745 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] [2021-11-02 14:10:24,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-02 14:10:24,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-02 14:10:24,946 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:10:24,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:10:24,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1236545081, now seen corresponding path program 1 times [2021-11-02 14:10:24,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:10:24,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115397296] [2021-11-02 14:10:24,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:10:24,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:10:25,013 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:10:25,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [28253239] [2021-11-02 14:10:25,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:10:25,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:10:25,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:10:25,015 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) [2021-11-02 14:10:25,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-02 14:10:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:10:25,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 3185 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 14:10:25,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:10:26,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:10:26,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:10:26,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:10:26,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115397296] [2021-11-02 14:10:26,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:10:26,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28253239] [2021-11-02 14:10:26,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28253239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:10:26,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:10:26,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 14:10:26,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367735192] [2021-11-02 14:10:26,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:10:26,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:10:26,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:10:26,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:10:26,145 INFO L87 Difference]: Start difference. First operand 2989 states and 3742 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 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) [2021-11-02 14:10:28,993 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:10:40,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:10:40,270 INFO L93 Difference]: Finished difference Result 5796 states and 7241 transitions. [2021-11-02 14:10:40,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 14:10:40,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 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 [2021-11-02 14:10:40,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:10:40,276 INFO L225 Difference]: With dead ends: 5796 [2021-11-02 14:10:40,276 INFO L226 Difference]: Without dead ends: 2944 [2021-11-02 14:10:40,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.50ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:10:40,281 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 2426 mSDsCounter, 0 mSdLazyCounter, 3757 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12318.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.40ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 3757 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13856.69ms IncrementalHoareTripleChecker+Time [2021-11-02 14:10:40,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 3779 Unknown, 0 Unchecked, 16.40ms Time], IncrementalHoareTripleChecker [21 Valid, 3757 Invalid, 1 Unknown, 0 Unchecked, 13856.69ms Time] [2021-11-02 14:10:40,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2021-11-02 14:10:40,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 2927. [2021-11-02 14:10:40,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2927 states, 2902 states have (on average 1.2522398345968297) internal successors, (3634), 2926 states have internal predecessors, (3634), 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) [2021-11-02 14:10:40,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 3634 transitions. [2021-11-02 14:10:40,427 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 3634 transitions. Word has length 142 [2021-11-02 14:10:40,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:10:40,427 INFO L470 AbstractCegarLoop]: Abstraction has 2927 states and 3634 transitions. [2021-11-02 14:10:40,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 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) [2021-11-02 14:10:40,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 3634 transitions. [2021-11-02 14:10:40,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-02 14:10:40,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:10:40,429 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] [2021-11-02 14:10:40,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-02 14:10:40,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:10:40,655 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:10:40,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:10:40,656 INFO L85 PathProgramCache]: Analyzing trace with hash -669285983, now seen corresponding path program 1 times [2021-11-02 14:10:40,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:10:40,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208480602] [2021-11-02 14:10:40,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:10:40,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:10:40,727 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:10:40,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948957100] [2021-11-02 14:10:40,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:10:40,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:10:40,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:10:40,729 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) [2021-11-02 14:10:40,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-02 14:10:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:10:41,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 3202 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 14:10:41,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:10:41,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:10:41,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:10:41,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:10:41,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208480602] [2021-11-02 14:10:41,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:10:41,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948957100] [2021-11-02 14:10:41,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948957100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:10:41,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:10:41,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 14:10:41,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020385430] [2021-11-02 14:10:41,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 14:10:41,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:10:41,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 14:10:41,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 14:10:41,865 INFO L87 Difference]: Start difference. First operand 2927 states and 3634 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2021-11-02 14:10:44,756 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.89s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:10:54,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:10:54,676 INFO L93 Difference]: Finished difference Result 8464 states and 10517 transitions. [2021-11-02 14:10:54,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 14:10:54,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 143 [2021-11-02 14:10:54,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:10:54,686 INFO L225 Difference]: With dead ends: 8464 [2021-11-02 14:10:54,686 INFO L226 Difference]: Without dead ends: 5685 [2021-11-02 14:10:54,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.51ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 14:10:54,691 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1108 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10892.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.83ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12400.95ms IncrementalHoareTripleChecker+Time [2021-11-02 14:10:54,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1108 Valid, 0 Invalid, 2534 Unknown, 0 Unchecked, 10.83ms Time], IncrementalHoareTripleChecker [33 Valid, 2500 Invalid, 1 Unknown, 0 Unchecked, 12400.95ms Time] [2021-11-02 14:10:54,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5685 states. [2021-11-02 14:10:54,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5685 to 2960. [2021-11-02 14:10:54,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2960 states, 2935 states have (on average 1.2494037478705282) internal successors, (3667), 2959 states have internal predecessors, (3667), 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) [2021-11-02 14:10:54,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2960 states to 2960 states and 3667 transitions. [2021-11-02 14:10:54,905 INFO L78 Accepts]: Start accepts. Automaton has 2960 states and 3667 transitions. Word has length 143 [2021-11-02 14:10:54,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:10:54,906 INFO L470 AbstractCegarLoop]: Abstraction has 2960 states and 3667 transitions. [2021-11-02 14:10:54,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2021-11-02 14:10:54,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2960 states and 3667 transitions. [2021-11-02 14:10:54,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-02 14:10:54,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:10:54,908 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] [2021-11-02 14:10:54,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-02 14:10:55,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:10:55,132 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:10:55,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:10:55,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1525392809, now seen corresponding path program 1 times [2021-11-02 14:10:55,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:10:55,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252824217] [2021-11-02 14:10:55,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:10:55,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:10:55,202 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:10:55,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1498562772] [2021-11-02 14:10:55,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:10:55,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:10:55,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:10:55,204 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) [2021-11-02 14:10:55,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-02 14:10:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:10:55,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 3205 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-02 14:10:55,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:10:56,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:10:56,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:10:56,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:10:56,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252824217] [2021-11-02 14:10:56,578 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:10:56,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498562772] [2021-11-02 14:10:56,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498562772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:10:56,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:10:56,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 14:10:56,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480574549] [2021-11-02 14:10:56,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 14:10:56,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:10:56,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 14:10:56,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:10:56,580 INFO L87 Difference]: Start difference. First operand 2960 states and 3667 transitions. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 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) [2021-11-02 14:10:59,537 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.96s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:11:34,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:11:34,547 INFO L93 Difference]: Finished difference Result 11332 states and 14020 transitions. [2021-11-02 14:11:34,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 14:11:34,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 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 143 [2021-11-02 14:11:34,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:11:34,559 INFO L225 Difference]: With dead ends: 11332 [2021-11-02 14:11:34,560 INFO L226 Difference]: Without dead ends: 8498 [2021-11-02 14:11:34,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 278.49ms TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-02 14:11:34,565 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2745 mSDsluCounter, 8964 mSDsCounter, 0 mSdLazyCounter, 11422 mSolverCounterSat, 55 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32806.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2745 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 66.61ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 11422 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36894.16ms IncrementalHoareTripleChecker+Time [2021-11-02 14:11:34,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2745 Valid, 0 Invalid, 11478 Unknown, 0 Unchecked, 66.61ms Time], IncrementalHoareTripleChecker [55 Valid, 11422 Invalid, 1 Unknown, 0 Unchecked, 36894.16ms Time] [2021-11-02 14:11:34,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8498 states. [2021-11-02 14:11:34,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8498 to 2960. [2021-11-02 14:11:34,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2960 states, 2935 states have (on average 1.2459965928449745) internal successors, (3657), 2959 states have internal predecessors, (3657), 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) [2021-11-02 14:11:34,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2960 states to 2960 states and 3657 transitions. [2021-11-02 14:11:34,781 INFO L78 Accepts]: Start accepts. Automaton has 2960 states and 3657 transitions. Word has length 143 [2021-11-02 14:11:34,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:11:34,781 INFO L470 AbstractCegarLoop]: Abstraction has 2960 states and 3657 transitions. [2021-11-02 14:11:34,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 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) [2021-11-02 14:11:34,782 INFO L276 IsEmpty]: Start isEmpty. Operand 2960 states and 3657 transitions. [2021-11-02 14:11:34,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-02 14:11:34,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:11:34,784 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] [2021-11-02 14:11:34,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-02 14:11:35,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:11:35,008 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:11:35,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:11:35,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1532458950, now seen corresponding path program 1 times [2021-11-02 14:11:35,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:11:35,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333972600] [2021-11-02 14:11:35,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:11:35,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:11:35,083 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:11:35,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1079182061] [2021-11-02 14:11:35,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:11:35,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:11:35,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:11:35,085 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) [2021-11-02 14:11:35,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-02 14:11:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:11:35,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 3182 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-02 14:11:35,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:11:36,471 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 19 treesize of output 7 [2021-11-02 14:11:37,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:11:37,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:11:37,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:11:37,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333972600] [2021-11-02 14:11:37,162 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:11:37,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079182061] [2021-11-02 14:11:37,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079182061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:11:37,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:11:37,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 14:11:37,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098465043] [2021-11-02 14:11:37,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 14:11:37,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:11:37,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 14:11:37,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-02 14:11:37,164 INFO L87 Difference]: Start difference. First operand 2960 states and 3657 transitions. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 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) [2021-11-02 14:11:40,543 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:13:06,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:13:06,312 INFO L93 Difference]: Finished difference Result 24167 states and 30066 transitions. [2021-11-02 14:13:06,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 14:13:06,314 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 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 [2021-11-02 14:13:06,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:13:06,336 INFO L225 Difference]: With dead ends: 24167 [2021-11-02 14:13:06,336 INFO L226 Difference]: Without dead ends: 21620 [2021-11-02 14:13:06,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 2309.43ms TimeCoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2021-11-02 14:13:06,342 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10500 mSDsluCounter, 16315 mSDsCounter, 0 mSdLazyCounter, 22645 mSolverCounterSat, 135 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74185.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10500 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 213.35ms SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 22645 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84723.85ms IncrementalHoareTripleChecker+Time [2021-11-02 14:13:06,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10500 Valid, 0 Invalid, 22781 Unknown, 0 Unchecked, 213.35ms Time], IncrementalHoareTripleChecker [135 Valid, 22645 Invalid, 1 Unknown, 0 Unchecked, 84723.85ms Time] [2021-11-02 14:13:06,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21620 states. [2021-11-02 14:13:06,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21620 to 3145. [2021-11-02 14:13:06,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3145 states, 3120 states have (on average 1.2426282051282052) internal successors, (3877), 3144 states have internal predecessors, (3877), 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) [2021-11-02 14:13:06,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 3877 transitions. [2021-11-02 14:13:06,689 INFO L78 Accepts]: Start accepts. Automaton has 3145 states and 3877 transitions. Word has length 144 [2021-11-02 14:13:06,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:13:06,689 INFO L470 AbstractCegarLoop]: Abstraction has 3145 states and 3877 transitions. [2021-11-02 14:13:06,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 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) [2021-11-02 14:13:06,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3145 states and 3877 transitions. [2021-11-02 14:13:06,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-02 14:13:06,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:13:06,692 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] [2021-11-02 14:13:06,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-02 14:13:06,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:13:06,920 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:13:06,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:13:06,921 INFO L85 PathProgramCache]: Analyzing trace with hash 2103652385, now seen corresponding path program 1 times [2021-11-02 14:13:06,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:13:06,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738785388] [2021-11-02 14:13:06,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:13:06,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:13:06,997 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:13:06,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735061782] [2021-11-02 14:13:06,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:13:06,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:13:06,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:13:06,999 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) [2021-11-02 14:13:07,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-02 14:13:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:13:07,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 3209 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 14:13:07,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:13:08,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:08,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:13:08,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:08,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:13:08,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738785388] [2021-11-02 14:13:08,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:13:08,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735061782] [2021-11-02 14:13:08,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735061782] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 14:13:08,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 14:13:08,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-02 14:13:08,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675971884] [2021-11-02 14:13:08,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 14:13:08,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:13:08,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 14:13:08,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:13:08,750 INFO L87 Difference]: Start difference. First operand 3145 states and 3877 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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) [2021-11-02 14:13:11,961 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:13:45,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:13:45,950 INFO L93 Difference]: Finished difference Result 16094 states and 19961 transitions. [2021-11-02 14:13:45,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 14:13:45,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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 [2021-11-02 14:13:45,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:13:45,968 INFO L225 Difference]: With dead ends: 16094 [2021-11-02 14:13:45,969 INFO L226 Difference]: Without dead ends: 13101 [2021-11-02 14:13:45,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 112.30ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:13:45,974 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5082 mSDsluCounter, 5456 mSDsCounter, 0 mSdLazyCounter, 7268 mSolverCounterSat, 124 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30058.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5082 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.81ms SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 7268 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35966.84ms IncrementalHoareTripleChecker+Time [2021-11-02 14:13:45,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5082 Valid, 0 Invalid, 7393 Unknown, 0 Unchecked, 50.81ms Time], IncrementalHoareTripleChecker [124 Valid, 7268 Invalid, 1 Unknown, 0 Unchecked, 35966.84ms Time] [2021-11-02 14:13:45,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13101 states. [2021-11-02 14:13:46,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13101 to 3469. [2021-11-02 14:13:46,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3469 states, 3444 states have (on average 1.2398373983739837) internal successors, (4270), 3468 states have internal predecessors, (4270), 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) [2021-11-02 14:13:46,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3469 states to 3469 states and 4270 transitions. [2021-11-02 14:13:46,258 INFO L78 Accepts]: Start accepts. Automaton has 3469 states and 4270 transitions. Word has length 146 [2021-11-02 14:13:46,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:13:46,258 INFO L470 AbstractCegarLoop]: Abstraction has 3469 states and 4270 transitions. [2021-11-02 14:13:46,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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) [2021-11-02 14:13:46,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3469 states and 4270 transitions. [2021-11-02 14:13:46,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-02 14:13:46,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:13:46,261 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, 1, 1, 1] [2021-11-02 14:13:46,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-02 14:13:46,475 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,SelfDestructingSolverStorable22 [2021-11-02 14:13:46,476 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:13:46,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:13:46,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1408217850, now seen corresponding path program 1 times [2021-11-02 14:13:46,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:13:46,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582549589] [2021-11-02 14:13:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:13:46,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:13:46,541 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:13:46,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751809636] [2021-11-02 14:13:46,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:13:46,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:13:46,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:13:46,543 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) [2021-11-02 14:13:46,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-02 14:13:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:13:47,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 3284 conjuncts, 124 conjunts are in the unsatisfiable core [2021-11-02 14:13:47,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:13:47,908 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 [2021-11-02 14:13:48,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:13:48,844 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 [2021-11-02 14:13:48,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:13:48,861 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 [2021-11-02 14:13:48,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:13:48,980 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 21 treesize of output 20 [2021-11-02 14:13:49,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:13:49,016 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 21 treesize of output 20 [2021-11-02 14:13:49,384 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-02 14:13:49,385 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 [2021-11-02 14:13:49,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:13:49,620 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-02 14:13:49,620 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 67 treesize of output 58 [2021-11-02 14:13:49,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:13:49,692 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-02 14:13:49,692 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 52 treesize of output 43 [2021-11-02 14:13:50,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:13:50,710 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-02 14:13:50,711 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 1 case distinctions, treesize of input 63 treesize of output 58 [2021-11-02 14:13:50,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:13:50,761 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-02 14:13:50,761 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 1 case distinctions, treesize of input 52 treesize of output 47 [2021-11-02 14:13:51,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:51,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:13:51,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:13:51,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582549589] [2021-11-02 14:13:51,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:13:51,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751809636] [2021-11-02 14:13:51,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751809636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:13:51,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:13:51,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 14:13:51,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106115053] [2021-11-02 14:13:51,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 14:13:51,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:13:51,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 14:13:51,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-02 14:13:51,551 INFO L87 Difference]: Start difference. First operand 3469 states and 4270 transitions. Second operand has 18 states, 18 states have (on average 8.277777777777779) internal successors, (149), 18 states have internal predecessors, (149), 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) [2021-11-02 14:13:53,705 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 [] [2021-11-02 14:14:47,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:14:47,223 INFO L93 Difference]: Finished difference Result 7996 states and 9790 transitions. [2021-11-02 14:14:47,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-02 14:14:47,224 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.277777777777779) internal successors, (149), 18 states have internal predecessors, (149), 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 149 [2021-11-02 14:14:47,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:14:47,228 INFO L225 Difference]: With dead ends: 7996 [2021-11-02 14:14:47,229 INFO L226 Difference]: Without dead ends: 4788 [2021-11-02 14:14:47,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 3273.07ms TimeCoverageRelationStatistics Valid=211, Invalid=979, Unknown=0, NotChecked=0, Total=1190 [2021-11-02 14:14:47,232 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1098 mSDsluCounter, 11190 mSDsCounter, 0 mSdLazyCounter, 16008 mSolverCounterSat, 89 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47062.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 16098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 111.73ms SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 16008 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52813.50ms IncrementalHoareTripleChecker+Time [2021-11-02 14:14:47,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1098 Valid, 0 Invalid, 16098 Unknown, 0 Unchecked, 111.73ms Time], IncrementalHoareTripleChecker [89 Valid, 16008 Invalid, 1 Unknown, 0 Unchecked, 52813.50ms Time] [2021-11-02 14:14:47,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4788 states. [2021-11-02 14:14:47,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4788 to 3730. [2021-11-02 14:14:47,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 3705 states have (on average 1.2356275303643725) internal successors, (4578), 3729 states have internal predecessors, (4578), 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) [2021-11-02 14:14:47,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 4578 transitions. [2021-11-02 14:14:47,427 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 4578 transitions. Word has length 149 [2021-11-02 14:14:47,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:14:47,427 INFO L470 AbstractCegarLoop]: Abstraction has 3730 states and 4578 transitions. [2021-11-02 14:14:47,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.277777777777779) internal successors, (149), 18 states have internal predecessors, (149), 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) [2021-11-02 14:14:47,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 4578 transitions. [2021-11-02 14:14:47,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-02 14:14:47,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:14:47,430 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, 1, 1, 1] [2021-11-02 14:14:47,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-02 14:14:47,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-02 14:14:47,644 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-02 14:14:47,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:14:47,644 INFO L85 PathProgramCache]: Analyzing trace with hash 840989626, now seen corresponding path program 1 times [2021-11-02 14:14:47,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:14:47,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680544006] [2021-11-02 14:14:47,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:14:47,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:14:47,704 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:14:47,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706378297] [2021-11-02 14:14:47,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:14:47,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:14:47,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:14:47,706 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 14:14:47,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-02 14:14:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:14:49,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 3284 conjuncts, 113 conjunts are in the unsatisfiable core [2021-11-02 14:14:49,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:14:49,238 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 [2021-11-02 14:14:50,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:14:50,203 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 [2021-11-02 14:14:50,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:14:50,225 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 [2021-11-02 14:14:50,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:14:50,356 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 21 treesize of output 20 [2021-11-02 14:14:50,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:14:50,379 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 21 treesize of output 20 [2021-11-02 14:14:50,688 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-02 14:14:50,688 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 [2021-11-02 14:14:50,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:14:50,945 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-02 14:14:50,945 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 67 treesize of output 58 [2021-11-02 14:14:50,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:14:51,014 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-02 14:14:51,014 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 52 treesize of output 43 [2021-11-02 14:14:51,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:14:51,976 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-02 14:14:51,976 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 1 case distinctions, treesize of input 63 treesize of output 58 [2021-11-02 14:14:51,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 14:14:52,028 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-02 14:14:52,028 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 1 case distinctions, treesize of input 52 treesize of output 47 [2021-11-02 14:14:52,912 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 29 treesize of output 21 [2021-11-02 14:14:52,919 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 18 treesize of output 10 [2021-11-02 14:14:53,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:14:53,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:14:53,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:14:53,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680544006] [2021-11-02 14:14:53,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:14:53,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706378297] [2021-11-02 14:14:53,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706378297] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:14:53,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:14:53,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-02 14:14:53,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631753968] [2021-11-02 14:14:53,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-02 14:14:53,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:14:53,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-02 14:14:53,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-11-02 14:14:53,306 INFO L87 Difference]: Start difference. First operand 3730 states and 4578 transitions. Second operand has 19 states, 19 states have (on average 7.842105263157895) internal successors, (149), 19 states have internal predecessors, (149), 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) [2021-11-02 14:14:56,313 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15