./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 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_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-5f08f0f [2021-11-05 13:40:04,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 13:40:04,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 13:40:05,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 13:40:05,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 13:40:05,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 13:40:05,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 13:40:05,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 13:40:05,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 13:40:05,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 13:40:05,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 13:40:05,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 13:40:05,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 13:40:05,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 13:40:05,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 13:40:05,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 13:40:05,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 13:40:05,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 13:40:05,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 13:40:05,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 13:40:05,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 13:40:05,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 13:40:05,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 13:40:05,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 13:40:05,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 13:40:05,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 13:40:05,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 13:40:05,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 13:40:05,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 13:40:05,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 13:40:05,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 13:40:05,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 13:40:05,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 13:40:05,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 13:40:05,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 13:40:05,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 13:40:05,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 13:40:05,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 13:40:05,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 13:40:05,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 13:40:05,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 13:40:05,100 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 13:40:05,132 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 13:40:05,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 13:40:05,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 13:40:05,134 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 13:40:05,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 13:40:05,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 13:40:05,136 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 13:40:05,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 13:40:05,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 13:40:05,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 13:40:05,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 13:40:05,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 13:40:05,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 13:40:05,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 13:40:05,138 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 13:40:05,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 13:40:05,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 13:40:05,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 13:40:05,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 13:40:05,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:40:05,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 13:40:05,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 13:40:05,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 13:40:05,139 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 13:40:05,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 13:40:05,140 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 13:40:05,140 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 13:40:05,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 13:40:05,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 13:40:05,140 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c [2021-11-05 13:40:05,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 13:40:05,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 13:40:05,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 13:40:05,469 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 13:40:05,470 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 13:40:05,471 INFO L432 ainManager$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 [2021-11-05 13:40:05,527 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/351806119/1a159ea298e948bcb52776757bef4b9a/FLAG2d282124d [2021-11-05 13:40:06,276 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 13:40:06,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2021-11-05 13:40:06,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/351806119/1a159ea298e948bcb52776757bef4b9a/FLAG2d282124d [2021-11-05 13:40:06,529 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/351806119/1a159ea298e948bcb52776757bef4b9a [2021-11-05 13:40:06,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 13:40:06,533 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 13:40:06,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 13:40:06,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 13:40:06,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 13:40:06,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:40:06" (1/1) ... [2021-11-05 13:40:06,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49ed75ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:40:06, skipping insertion in model container [2021-11-05 13:40:06,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:40:06" (1/1) ... [2021-11-05 13:40:06,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 13:40:06,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 13:40:06,911 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] [2021-11-05 13:40:06,916 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] [2021-11-05 13:40:06,932 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:40:06,937 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:40:07,528 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,530 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,532 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,533 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,534 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,558 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,565 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,571 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,571 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,573 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,574 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,574 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,575 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,819 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:40:07,820 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:40:07,821 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:40:07,821 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:40:07,823 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:40:07,823 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:40:07,823 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:40:07,824 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:40:07,824 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:40:07,825 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:40:07,916 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:40:07,934 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,935 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,938 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,943 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,996 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,997 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,997 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,997 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,997 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,998 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,998 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,999 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,999 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,999 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:07,999 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,000 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,000 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,003 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,003 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,003 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,004 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,006 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,007 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,013 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,017 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,017 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:40:08,064 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 13:40:08,087 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] [2021-11-05 13:40:08,089 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] [2021-11-05 13:40:08,090 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:40:08,093 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:40:08,165 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,171 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,172 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,172 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,173 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,177 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,182 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,183 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,184 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,186 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,186 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,187 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,187 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,219 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:40:08,220 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:40:08,221 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:40:08,223 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:40:08,224 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:40:08,224 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:40:08,225 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:40:08,225 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:40:08,226 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:40:08,226 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:40:08,247 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:40:08,256 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,257 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,257 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,261 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,291 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,292 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,292 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,293 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,293 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,294 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,294 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,294 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,295 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,295 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,296 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,296 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,298 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,299 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,299 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,299 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,300 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,302 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,302 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,307 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,308 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,308 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:40:08,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:40:08,513 INFO L208 MainTranslator]: Completed translation [2021-11-05 13:40:08,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:40:08 WrapperNode [2021-11-05 13:40:08,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 13:40:08,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 13:40:08,516 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 13:40:08,516 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 13:40:08,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:40:08" (1/1) ... [2021-11-05 13:40:08,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:40:08" (1/1) ... [2021-11-05 13:40:08,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 13:40:08,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 13:40:08,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 13:40:08,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 13:40:08,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:40:08" (1/1) ... [2021-11-05 13:40:08,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:40:08" (1/1) ... [2021-11-05 13:40:08,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:40:08" (1/1) ... [2021-11-05 13:40:08,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:40:08" (1/1) ... [2021-11-05 13:40:08,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:40:08" (1/1) ... [2021-11-05 13:40:08,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:40:08" (1/1) ... [2021-11-05 13:40:08,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:40:08" (1/1) ... [2021-11-05 13:40:09,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 13:40:09,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 13:40:09,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 13:40:09,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 13:40:09,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:40:08" (1/1) ... [2021-11-05 13:40:09,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:40:09,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:40:09,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 13:40:09,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 13:40:09,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 13:40:09,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 13:40:09,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 13:40:09,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 13:40:09,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 13:40:09,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 13:40:09,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 13:40:09,083 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-05 13:40:09,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 13:40:09,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 13:40:09,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 13:40:09,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 13:40:21,073 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 13:40:21,073 INFO L299 CfgBuilder]: Removed 788 assume(true) statements. [2021-11-05 13:40:21,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:40:21 BoogieIcfgContainer [2021-11-05 13:40:21,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 13:40:21,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 13:40:21,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 13:40:21,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 13:40:21,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 01:40:06" (1/3) ... [2021-11-05 13:40:21,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378fdaf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:40:21, skipping insertion in model container [2021-11-05 13:40:21,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:40:08" (2/3) ... [2021-11-05 13:40:21,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378fdaf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:40:21, skipping insertion in model container [2021-11-05 13:40:21,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:40:21" (3/3) ... [2021-11-05 13:40:21,082 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_up_harness.i [2021-11-05 13:40:21,086 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 13:40:21,087 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2021-11-05 13:40:21,126 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 13:40:21,131 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 13:40:21,131 INFO L340 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2021-11-05 13:40:21,160 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) [2021-11-05 13:40:21,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-05 13:40:21,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:40:21,173 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] [2021-11-05 13:40:21,173 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)] === [2021-11-05 13:40:21,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:40:21,178 INFO L85 PathProgramCache]: Analyzing trace with hash -97697725, now seen corresponding path program 1 times [2021-11-05 13:40:21,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:40:21,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509721531] [2021-11-05 13:40:21,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:21,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:40:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:40:21,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:40:21,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:40:21,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509721531] [2021-11-05 13:40:21,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509721531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:40:21,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:40:21,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 13:40:21,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013720892] [2021-11-05 13:40:21,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:40:21,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 13:40:21,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:40:21,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 13:40:21,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:40:21,862 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) [2021-11-05 13:40:21,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:40:21,973 INFO L93 Difference]: Finished difference Result 1982 states and 2759 transitions. [2021-11-05 13:40:21,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 13:40:21,975 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 [2021-11-05 13:40:21,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:40:21,993 INFO L225 Difference]: With dead ends: 1982 [2021-11-05 13:40:21,993 INFO L226 Difference]: Without dead ends: 989 [2021-11-05 13:40:22,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:40:22,006 INFO L933 BasicCegarLoop]: 1282 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.17ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 13:40:22,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 9.17ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 13:40:22,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2021-11-05 13:40:22,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 989. [2021-11-05 13:40:22,091 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) [2021-11-05 13:40:22,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1277 transitions. [2021-11-05 13:40:22,095 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1277 transitions. Word has length 42 [2021-11-05 13:40:22,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:40:22,095 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1277 transitions. [2021-11-05 13:40:22,095 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) [2021-11-05 13:40:22,095 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1277 transitions. [2021-11-05 13:40:22,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-05 13:40:22,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:40:22,099 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] [2021-11-05 13:40:22,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 13:40:22,099 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)] === [2021-11-05 13:40:22,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:40:22,100 INFO L85 PathProgramCache]: Analyzing trace with hash 268775359, now seen corresponding path program 1 times [2021-11-05 13:40:22,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:40:22,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503658832] [2021-11-05 13:40:22,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:22,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:40:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:40:22,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:40:22,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:40:22,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503658832] [2021-11-05 13:40:22,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503658832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:40:22,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:40:22,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:40:22,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657640405] [2021-11-05 13:40:22,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:40:22,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:40:22,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:40:22,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:40:22,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:40:22,468 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) [2021-11-05 13:40:22,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:40:22,657 INFO L93 Difference]: Finished difference Result 2111 states and 2719 transitions. [2021-11-05 13:40:22,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:40:22,657 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 [2021-11-05 13:40:22,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:40:22,662 INFO L225 Difference]: With dead ends: 2111 [2021-11-05 13:40:22,662 INFO L226 Difference]: Without dead ends: 1202 [2021-11-05 13:40:22,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.99ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:40:22,665 INFO L933 BasicCegarLoop]: 1259 mSDtfsCounter, 1523 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 104.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 2266 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.42ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 134.30ms IncrementalHoareTripleChecker+Time [2021-11-05 13:40:22,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1523 Valid, 2266 Invalid, 33 Unknown, 0 Unchecked, 8.42ms Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 134.30ms Time] [2021-11-05 13:40:22,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2021-11-05 13:40:22,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 989. [2021-11-05 13:40:22,687 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) [2021-11-05 13:40:22,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1274 transitions. [2021-11-05 13:40:22,690 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1274 transitions. Word has length 42 [2021-11-05 13:40:22,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:40:22,690 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1274 transitions. [2021-11-05 13:40:22,690 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) [2021-11-05 13:40:22,691 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1274 transitions. [2021-11-05 13:40:22,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-05 13:40:22,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:40:22,692 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] [2021-11-05 13:40:22,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 13:40:22,693 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)] === [2021-11-05 13:40:22,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:40:22,694 INFO L85 PathProgramCache]: Analyzing trace with hash 82325853, now seen corresponding path program 1 times [2021-11-05 13:40:22,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:40:22,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939429512] [2021-11-05 13:40:22,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:22,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:40:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:40:22,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:40:22,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:40:22,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939429512] [2021-11-05 13:40:22,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939429512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:40:22,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:40:22,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:40:22,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387623537] [2021-11-05 13:40:22,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:40:22,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:40:22,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:40:22,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:40:22,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:40:22,982 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) [2021-11-05 13:40:24,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:40:24,500 INFO L93 Difference]: Finished difference Result 2623 states and 3352 transitions. [2021-11-05 13:40:24,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:40:24,503 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 [2021-11-05 13:40:24,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:40:24,509 INFO L225 Difference]: With dead ends: 2623 [2021-11-05 13:40:24,509 INFO L226 Difference]: Without dead ends: 1682 [2021-11-05 13:40:24,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 115.29ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:40:24,516 INFO L933 BasicCegarLoop]: 1238 mSDtfsCounter, 3331 mSDsluCounter, 1959 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1215.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3331 SdHoareTripleChecker+Valid, 3197 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.61ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1329.91ms IncrementalHoareTripleChecker+Time [2021-11-05 13:40:24,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3331 Valid, 3197 Invalid, 332 Unknown, 0 Unchecked, 15.61ms Time], IncrementalHoareTripleChecker [23 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 1329.91ms Time] [2021-11-05 13:40:24,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2021-11-05 13:40:24,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 989. [2021-11-05 13:40:24,548 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) [2021-11-05 13:40:24,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1271 transitions. [2021-11-05 13:40:24,551 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1271 transitions. Word has length 50 [2021-11-05 13:40:24,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:40:24,552 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1271 transitions. [2021-11-05 13:40:24,552 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) [2021-11-05 13:40:24,552 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1271 transitions. [2021-11-05 13:40:24,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-05 13:40:24,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:40:24,558 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] [2021-11-05 13:40:24,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 13:40:24,558 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)] === [2021-11-05 13:40:24,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:40:24,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1376076053, now seen corresponding path program 1 times [2021-11-05 13:40:24,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:40:24,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232101132] [2021-11-05 13:40:24,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:24,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:40:24,676 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:40:24,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [996498399] [2021-11-05 13:40:24,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:24,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:40:24,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:40:24,679 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:40:24,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 13:40:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:40:25,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 2618 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 13:40:25,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:40:26,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:40:26,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:40:26,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:40:26,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232101132] [2021-11-05 13:40:26,099 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:40:26,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996498399] [2021-11-05 13:40:26,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996498399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:40:26,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:40:26,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:40:26,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454850192] [2021-11-05 13:40:26,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:40:26,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:40:26,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:40:26,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:40:26,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:40:26,101 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) [2021-11-05 13:40:27,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:40:27,102 INFO L93 Difference]: Finished difference Result 2802 states and 3579 transitions. [2021-11-05 13:40:27,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 13:40:27,102 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 [2021-11-05 13:40:27,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:40:27,109 INFO L225 Difference]: With dead ends: 2802 [2021-11-05 13:40:27,109 INFO L226 Difference]: Without dead ends: 1892 [2021-11-05 13:40:27,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 188.21ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-05 13:40:27,113 INFO L933 BasicCegarLoop]: 1190 mSDtfsCounter, 6649 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 700.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6649 SdHoareTripleChecker+Valid, 3154 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.75ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 763.36ms IncrementalHoareTripleChecker+Time [2021-11-05 13:40:27,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6649 Valid, 3154 Invalid, 210 Unknown, 0 Unchecked, 14.75ms Time], IncrementalHoareTripleChecker [17 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 763.36ms Time] [2021-11-05 13:40:27,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2021-11-05 13:40:27,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 989. [2021-11-05 13:40:27,153 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) [2021-11-05 13:40:27,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1268 transitions. [2021-11-05 13:40:27,156 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1268 transitions. Word has length 66 [2021-11-05 13:40:27,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:40:27,158 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1268 transitions. [2021-11-05 13:40:27,158 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) [2021-11-05 13:40:27,158 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1268 transitions. [2021-11-05 13:40:27,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-05 13:40:27,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:40:27,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:40:27,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-05 13:40:27,383 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 [2021-11-05 13:40:27,384 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)] === [2021-11-05 13:40:27,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:40:27,384 INFO L85 PathProgramCache]: Analyzing trace with hash 726765177, now seen corresponding path program 1 times [2021-11-05 13:40:27,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:40:27,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616816172] [2021-11-05 13:40:27,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:27,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:40:27,462 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:40:27,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347196803] [2021-11-05 13:40:27,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:27,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:40:27,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:40:27,464 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:40:27,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 13:40:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:40:28,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 2723 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 13:40:28,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:40:28,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:40:28,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:40:28,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:40:28,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616816172] [2021-11-05 13:40:28,859 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:40:28,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347196803] [2021-11-05 13:40:28,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347196803] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:40:28,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:40:28,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:40:28,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621843542] [2021-11-05 13:40:28,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:40:28,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:40:28,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:40:28,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:40:28,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:40:28,862 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) [2021-11-05 13:40:30,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:40:30,921 INFO L93 Difference]: Finished difference Result 2827 states and 3607 transitions. [2021-11-05 13:40:30,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 13:40:30,921 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 [2021-11-05 13:40:30,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:40:30,928 INFO L225 Difference]: With dead ends: 2827 [2021-11-05 13:40:30,928 INFO L226 Difference]: Without dead ends: 1901 [2021-11-05 13:40:30,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 299.03ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-05 13:40:30,931 INFO L933 BasicCegarLoop]: 1157 mSDtfsCounter, 6894 mSDsluCounter, 2742 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1588.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6894 SdHoareTripleChecker+Valid, 3899 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.97ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1719.56ms IncrementalHoareTripleChecker+Time [2021-11-05 13:40:30,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6894 Valid, 3899 Invalid, 519 Unknown, 0 Unchecked, 15.97ms Time], IncrementalHoareTripleChecker [46 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 1719.56ms Time] [2021-11-05 13:40:30,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1901 states. [2021-11-05 13:40:30,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1901 to 989. [2021-11-05 13:40:30,962 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) [2021-11-05 13:40:30,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1265 transitions. [2021-11-05 13:40:30,964 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1265 transitions. Word has length 90 [2021-11-05 13:40:30,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:40:30,966 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1265 transitions. [2021-11-05 13:40:30,967 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) [2021-11-05 13:40:30,967 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1265 transitions. [2021-11-05 13:40:30,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-05 13:40:30,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:40:30,968 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] [2021-11-05 13:40:31,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 13:40:31,191 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 [2021-11-05 13:40:31,191 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)] === [2021-11-05 13:40:31,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:40:31,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1774462527, now seen corresponding path program 1 times [2021-11-05 13:40:31,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:40:31,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945215772] [2021-11-05 13:40:31,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:31,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:40:31,270 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:40:31,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1805139721] [2021-11-05 13:40:31,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:31,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:40:31,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:40:31,272 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:40:31,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 13:40:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:40:31,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 2913 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 13:40:32,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:40:32,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:40:32,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:40:32,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:40:32,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945215772] [2021-11-05 13:40:32,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:40:32,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805139721] [2021-11-05 13:40:32,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805139721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:40:32,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:40:32,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:40:32,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546414948] [2021-11-05 13:40:32,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:40:32,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:40:32,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:40:32,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:40:32,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:40:32,692 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) [2021-11-05 13:40:33,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:40:33,259 INFO L93 Difference]: Finished difference Result 2039 states and 2607 transitions. [2021-11-05 13:40:33,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 13:40:33,260 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 [2021-11-05 13:40:33,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:40:33,264 INFO L225 Difference]: With dead ends: 2039 [2021-11-05 13:40:33,264 INFO L226 Difference]: Without dead ends: 1202 [2021-11-05 13:40:33,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 146.75ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-05 13:40:33,266 INFO L933 BasicCegarLoop]: 1196 mSDtfsCounter, 5474 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 391.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5474 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.86ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 418.95ms IncrementalHoareTripleChecker+Time [2021-11-05 13:40:33,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5474 Valid, 1697 Invalid, 121 Unknown, 0 Unchecked, 5.86ms Time], IncrementalHoareTripleChecker [17 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 418.95ms Time] [2021-11-05 13:40:33,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2021-11-05 13:40:33,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 989. [2021-11-05 13:40:33,294 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) [2021-11-05 13:40:33,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1263 transitions. [2021-11-05 13:40:33,296 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1263 transitions. Word has length 106 [2021-11-05 13:40:33,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:40:33,297 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1263 transitions. [2021-11-05 13:40:33,297 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) [2021-11-05 13:40:33,297 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1263 transitions. [2021-11-05 13:40:33,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-05 13:40:33,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:40:33,298 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] [2021-11-05 13:40:33,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-05 13:40:33,511 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 [2021-11-05 13:40:33,511 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)] === [2021-11-05 13:40:33,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:40:33,512 INFO L85 PathProgramCache]: Analyzing trace with hash 2044010096, now seen corresponding path program 1 times [2021-11-05 13:40:33,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:40:33,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768742083] [2021-11-05 13:40:33,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:33,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:40:33,592 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:40:33,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1643205845] [2021-11-05 13:40:33,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:33,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:40:33,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:40:33,594 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:40:33,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 13:40:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:40:34,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 2944 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 13:40:34,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:40:35,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:40:35,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:40:35,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:40:35,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768742083] [2021-11-05 13:40:35,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:40:35,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643205845] [2021-11-05 13:40:35,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643205845] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:40:35,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:40:35,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:40:35,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623491163] [2021-11-05 13:40:35,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:40:35,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:40:35,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:40:35,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:40:35,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:40:35,038 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) [2021-11-05 13:40:36,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:40:36,598 INFO L93 Difference]: Finished difference Result 2079 states and 2651 transitions. [2021-11-05 13:40:36,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 13:40:36,599 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 [2021-11-05 13:40:36,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:40:36,604 INFO L225 Difference]: With dead ends: 2079 [2021-11-05 13:40:36,604 INFO L226 Difference]: Without dead ends: 1242 [2021-11-05 13:40:36,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 274.44ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-05 13:40:36,606 INFO L933 BasicCegarLoop]: 1157 mSDtfsCounter, 5877 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1174.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5877 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.00ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1284.13ms IncrementalHoareTripleChecker+Time [2021-11-05 13:40:36,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5877 Valid, 2509 Invalid, 433 Unknown, 0 Unchecked, 9.00ms Time], IncrementalHoareTripleChecker [39 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 1284.13ms Time] [2021-11-05 13:40:36,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2021-11-05 13:40:36,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 989. [2021-11-05 13:40:36,685 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) [2021-11-05 13:40:36,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1259 transitions. [2021-11-05 13:40:36,687 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1259 transitions. Word has length 110 [2021-11-05 13:40:36,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:40:36,689 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1259 transitions. [2021-11-05 13:40:36,689 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) [2021-11-05 13:40:36,689 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1259 transitions. [2021-11-05 13:40:36,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-05 13:40:36,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:40:36,690 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] [2021-11-05 13:40:36,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-05 13:40:36,913 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 [2021-11-05 13:40:36,913 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)] === [2021-11-05 13:40:36,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:40:36,914 INFO L85 PathProgramCache]: Analyzing trace with hash -22427764, now seen corresponding path program 1 times [2021-11-05 13:40:36,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:40:36,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586020325] [2021-11-05 13:40:36,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:36,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:40:36,990 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:40:36,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [935556886] [2021-11-05 13:40:36,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:36,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:40:36,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:40:36,992 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:40:37,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-05 13:40:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:40:37,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 3039 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 13:40:37,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:40:38,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:40:38,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:40:38,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:40:38,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586020325] [2021-11-05 13:40:38,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:40:38,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935556886] [2021-11-05 13:40:38,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935556886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:40:38,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:40:38,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:40:38,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983765456] [2021-11-05 13:40:38,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:40:38,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:40:38,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:40:38,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:40:38,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:40:38,479 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) [2021-11-05 13:40:39,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:40:39,213 INFO L93 Difference]: Finished difference Result 2316 states and 2943 transitions. [2021-11-05 13:40:39,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 13:40:39,213 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 [2021-11-05 13:40:39,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:40:39,218 INFO L225 Difference]: With dead ends: 2316 [2021-11-05 13:40:39,218 INFO L226 Difference]: Without dead ends: 1479 [2021-11-05 13:40:39,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 256.91ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-05 13:40:39,220 INFO L933 BasicCegarLoop]: 1155 mSDtfsCounter, 7909 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 461.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7909 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.38ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 504.10ms IncrementalHoareTripleChecker+Time [2021-11-05 13:40:39,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7909 Valid, 2062 Invalid, 224 Unknown, 0 Unchecked, 6.38ms Time], IncrementalHoareTripleChecker [42 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 504.10ms Time] [2021-11-05 13:40:39,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2021-11-05 13:40:39,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 989. [2021-11-05 13:40:39,253 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) [2021-11-05 13:40:39,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1257 transitions. [2021-11-05 13:40:39,255 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1257 transitions. Word has length 118 [2021-11-05 13:40:39,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:40:39,255 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1257 transitions. [2021-11-05 13:40:39,255 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) [2021-11-05 13:40:39,255 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1257 transitions. [2021-11-05 13:40:39,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-05 13:40:39,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:40:39,257 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] [2021-11-05 13:40:39,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-05 13:40:39,475 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 [2021-11-05 13:40:39,475 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)] === [2021-11-05 13:40:39,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:40:39,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1548527879, now seen corresponding path program 1 times [2021-11-05 13:40:39,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:40:39,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506723647] [2021-11-05 13:40:39,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:39,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:40:39,549 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:40:39,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499976872] [2021-11-05 13:40:39,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:39,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:40:39,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:40:39,551 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:40:39,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-05 13:40:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:40:40,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 3093 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-05 13:40:40,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:40:41,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:40:41,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:40:41,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:40:41,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506723647] [2021-11-05 13:40:41,172 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:40:41,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499976872] [2021-11-05 13:40:41,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499976872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:40:41,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:40:41,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 13:40:41,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909333417] [2021-11-05 13:40:41,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:40:41,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 13:40:41,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:40:41,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 13:40:41,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:40:41,174 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) [2021-11-05 13:40:42,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:40:42,704 INFO L93 Difference]: Finished difference Result 2068 states and 2639 transitions. [2021-11-05 13:40:42,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 13:40:42,705 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 [2021-11-05 13:40:42,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:40:42,709 INFO L225 Difference]: With dead ends: 2068 [2021-11-05 13:40:42,709 INFO L226 Difference]: Without dead ends: 1231 [2021-11-05 13:40:42,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 267.67ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-05 13:40:42,711 INFO L933 BasicCegarLoop]: 1298 mSDtfsCounter, 5521 mSDsluCounter, 2610 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1178.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5521 SdHoareTripleChecker+Valid, 3908 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.01ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1293.69ms IncrementalHoareTripleChecker+Time [2021-11-05 13:40:42,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5521 Valid, 3908 Invalid, 557 Unknown, 0 Unchecked, 9.01ms Time], IncrementalHoareTripleChecker [72 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 1293.69ms Time] [2021-11-05 13:40:42,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2021-11-05 13:40:42,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 989. [2021-11-05 13:40:42,744 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) [2021-11-05 13:40:42,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1249 transitions. [2021-11-05 13:40:42,746 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1249 transitions. Word has length 127 [2021-11-05 13:40:42,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:40:42,747 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1249 transitions. [2021-11-05 13:40:42,747 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) [2021-11-05 13:40:42,747 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1249 transitions. [2021-11-05 13:40:42,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-05 13:40:42,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:40:42,749 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] [2021-11-05 13:40:42,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-05 13:40:42,963 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 [2021-11-05 13:40:42,963 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)] === [2021-11-05 13:40:42,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:40:42,964 INFO L85 PathProgramCache]: Analyzing trace with hash -197690883, now seen corresponding path program 1 times [2021-11-05 13:40:42,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:40:42,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535412852] [2021-11-05 13:40:42,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:42,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:40:43,056 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:40:43,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755994411] [2021-11-05 13:40:43,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:43,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:40:43,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:40:43,060 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:40:43,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-05 13:40:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:40:43,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 3089 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-05 13:40:43,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:40:44,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:40:44,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:40:44,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:40:44,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535412852] [2021-11-05 13:40:44,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:40:44,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755994411] [2021-11-05 13:40:44,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755994411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:40:44,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:40:44,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 13:40:44,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019164684] [2021-11-05 13:40:44,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:40:44,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:40:44,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:40:44,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:40:44,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:40:44,479 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) [2021-11-05 13:40:45,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:40:45,844 INFO L93 Difference]: Finished difference Result 2354 states and 2956 transitions. [2021-11-05 13:40:45,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 13:40:45,845 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 [2021-11-05 13:40:45,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:40:45,848 INFO L225 Difference]: With dead ends: 2354 [2021-11-05 13:40:45,849 INFO L226 Difference]: Without dead ends: 1517 [2021-11-05 13:40:45,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 253.44ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-11-05 13:40:45,851 INFO L933 BasicCegarLoop]: 1157 mSDtfsCounter, 6446 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 989.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6446 SdHoareTripleChecker+Valid, 2778 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.34ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1078.97ms IncrementalHoareTripleChecker+Time [2021-11-05 13:40:45,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6446 Valid, 2778 Invalid, 431 Unknown, 0 Unchecked, 8.34ms Time], IncrementalHoareTripleChecker [60 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 1078.97ms Time] [2021-11-05 13:40:45,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2021-11-05 13:40:45,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 989. [2021-11-05 13:40:45,890 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) [2021-11-05 13:40:45,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1247 transitions. [2021-11-05 13:40:45,892 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1247 transitions. Word has length 130 [2021-11-05 13:40:45,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:40:45,892 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1247 transitions. [2021-11-05 13:40:45,893 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) [2021-11-05 13:40:45,893 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1247 transitions. [2021-11-05 13:40:45,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-05 13:40:45,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:40:45,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:40:45,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-05 13:40:46,107 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 [2021-11-05 13:40:46,108 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)] === [2021-11-05 13:40:46,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:40:46,108 INFO L85 PathProgramCache]: Analyzing trace with hash -2058424223, now seen corresponding path program 1 times [2021-11-05 13:40:46,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:40:46,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696933061] [2021-11-05 13:40:46,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:46,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:40:46,178 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:40:46,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1614387008] [2021-11-05 13:40:46,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:46,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:40:46,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:40:46,180 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:40:46,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-05 13:40:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:40:46,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 3184 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 13:40:46,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:40:47,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:40:47,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:40:47,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:40:47,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696933061] [2021-11-05 13:40:47,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:40:47,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614387008] [2021-11-05 13:40:47,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614387008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:40:47,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:40:47,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:40:47,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929773288] [2021-11-05 13:40:47,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:40:47,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:40:47,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:40:47,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:40:47,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:40:47,500 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) [2021-11-05 13:40:49,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:40:51,734 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:40:53,865 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:40:59,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:40:59,381 INFO L93 Difference]: Finished difference Result 2701 states and 3402 transitions. [2021-11-05 13:40:59,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 13:40:59,382 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 [2021-11-05 13:40:59,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:40:59,386 INFO L225 Difference]: With dead ends: 2701 [2021-11-05 13:40:59,387 INFO L226 Difference]: Without dead ends: 1781 [2021-11-05 13:40:59,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 342.99ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-05 13:40:59,389 INFO L933 BasicCegarLoop]: 1730 mSDtfsCounter, 937 mSDsluCounter, 5602 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 43 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10685.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 7332 SdHoareTripleChecker+Invalid, 1787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.43ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11524.98ms IncrementalHoareTripleChecker+Time [2021-11-05 13:40:59,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [937 Valid, 7332 Invalid, 1787 Unknown, 0 Unchecked, 17.43ms Time], IncrementalHoareTripleChecker [43 Valid, 1741 Invalid, 3 Unknown, 0 Unchecked, 11524.98ms Time] [2021-11-05 13:40:59,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2021-11-05 13:40:59,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1013. [2021-11-05 13:40:59,429 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) [2021-11-05 13:40:59,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1277 transitions. [2021-11-05 13:40:59,431 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1277 transitions. Word has length 138 [2021-11-05 13:40:59,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:40:59,432 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 1277 transitions. [2021-11-05 13:40:59,432 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) [2021-11-05 13:40:59,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1277 transitions. [2021-11-05 13:40:59,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-05 13:40:59,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:40:59,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:40:59,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-05 13:40:59,655 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 [2021-11-05 13:40:59,656 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)] === [2021-11-05 13:40:59,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:40:59,656 INFO L85 PathProgramCache]: Analyzing trace with hash -520084193, now seen corresponding path program 1 times [2021-11-05 13:40:59,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:40:59,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887223353] [2021-11-05 13:40:59,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:59,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:40:59,727 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:40:59,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1311979426] [2021-11-05 13:40:59,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:40:59,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:40:59,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:40:59,729 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:40:59,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-05 13:41:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:41:00,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 3181 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 13:41:00,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:41:00,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:41:00,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:41:00,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:41:00,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887223353] [2021-11-05 13:41:00,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:41:00,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311979426] [2021-11-05 13:41:00,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311979426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:41:00,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:41:00,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:41:00,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985705726] [2021-11-05 13:41:00,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:41:00,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:41:00,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:41:00,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:41:00,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:41:00,724 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) [2021-11-05 13:41:01,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:41:01,059 INFO L93 Difference]: Finished difference Result 1975 states and 2490 transitions. [2021-11-05 13:41:01,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:41:01,060 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 [2021-11-05 13:41:01,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:41:01,064 INFO L225 Difference]: With dead ends: 1975 [2021-11-05 13:41:01,064 INFO L226 Difference]: Without dead ends: 1037 [2021-11-05 13:41:01,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.35ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:41:01,066 INFO L933 BasicCegarLoop]: 1241 mSDtfsCounter, 14 mSDsluCounter, 2428 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 261.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3669 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.89ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 282.50ms IncrementalHoareTripleChecker+Time [2021-11-05 13:41:01,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 3669 Invalid, 113 Unknown, 0 Unchecked, 1.89ms Time], IncrementalHoareTripleChecker [21 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 282.50ms Time] [2021-11-05 13:41:01,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2021-11-05 13:41:01,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1025. [2021-11-05 13:41:01,141 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) [2021-11-05 13:41:01,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1289 transitions. [2021-11-05 13:41:01,143 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1289 transitions. Word has length 138 [2021-11-05 13:41:01,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:41:01,143 INFO L470 AbstractCegarLoop]: Abstraction has 1025 states and 1289 transitions. [2021-11-05 13:41:01,143 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) [2021-11-05 13:41:01,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1289 transitions. [2021-11-05 13:41:01,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-05 13:41:01,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:41:01,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:41:01,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-05 13:41:01,359 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 [2021-11-05 13:41:01,359 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)] === [2021-11-05 13:41:01,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:41:01,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1001164451, now seen corresponding path program 1 times [2021-11-05 13:41:01,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:41:01,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350703889] [2021-11-05 13:41:01,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:41:01,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:41:01,429 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:41:01,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1021556992] [2021-11-05 13:41:01,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:41:01,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:41:01,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:41:01,431 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:41:01,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-05 13:41:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:41:02,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 3176 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-05 13:41:02,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:41:02,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:41:02,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:41:02,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:41:02,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350703889] [2021-11-05 13:41:02,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:41:02,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021556992] [2021-11-05 13:41:02,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021556992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:41:02,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:41:02,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:41:02,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48021356] [2021-11-05 13:41:02,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:41:02,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:41:02,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:41:02,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:41:02,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:41:02,707 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) [2021-11-05 13:41:03,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:41:03,283 INFO L93 Difference]: Finished difference Result 2810 states and 3526 transitions. [2021-11-05 13:41:03,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:41:03,283 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 [2021-11-05 13:41:03,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:41:03,289 INFO L225 Difference]: With dead ends: 2810 [2021-11-05 13:41:03,289 INFO L226 Difference]: Without dead ends: 1869 [2021-11-05 13:41:03,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.02ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:41:03,294 INFO L933 BasicCegarLoop]: 2216 mSDtfsCounter, 1079 mSDsluCounter, 5531 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 426.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 7747 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.20ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 458.90ms IncrementalHoareTripleChecker+Time [2021-11-05 13:41:03,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1079 Valid, 7747 Invalid, 161 Unknown, 0 Unchecked, 5.20ms Time], IncrementalHoareTripleChecker [26 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 458.90ms Time] [2021-11-05 13:41:03,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2021-11-05 13:41:03,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1073. [2021-11-05 13:41:03,339 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) [2021-11-05 13:41:03,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1349 transitions. [2021-11-05 13:41:03,341 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1349 transitions. Word has length 138 [2021-11-05 13:41:03,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:41:03,342 INFO L470 AbstractCegarLoop]: Abstraction has 1073 states and 1349 transitions. [2021-11-05 13:41:03,342 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) [2021-11-05 13:41:03,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1349 transitions. [2021-11-05 13:41:03,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-05 13:41:03,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:41:03,344 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:41:03,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-05 13:41:03,563 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 [2021-11-05 13:41:03,563 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)] === [2021-11-05 13:41:03,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:41:03,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1005834329, now seen corresponding path program 1 times [2021-11-05 13:41:03,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:41:03,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46732127] [2021-11-05 13:41:03,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:41:03,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:41:03,626 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:41:03,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988885277] [2021-11-05 13:41:03,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:41:03,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:41:03,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:41:03,628 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:41:03,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-05 13:41:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:41:04,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 3170 conjuncts, 75 conjunts are in the unsatisfiable core [2021-11-05 13:41:04,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:41:06,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2021-11-05 13:41:06,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-05 13:41:06,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:41:06,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:41:06,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:41:06,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46732127] [2021-11-05 13:41:06,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:41:06,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988885277] [2021-11-05 13:41:06,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988885277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:41:06,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:41:06,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 13:41:06,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267115729] [2021-11-05 13:41:06,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:41:06,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 13:41:06,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:41:06,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 13:41:06,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-05 13:41:06,567 INFO L87 Difference]: Start difference. First operand 1073 states and 1349 transitions. Second operand has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:41:08,603 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:41:10,700 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:41:21,939 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-05 13:41:22,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:41:22,783 INFO L93 Difference]: Finished difference Result 3938 states and 4924 transitions. [2021-11-05 13:41:22,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-05 13:41:22,784 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-05 13:41:22,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:41:22,796 INFO L225 Difference]: With dead ends: 3938 [2021-11-05 13:41:22,796 INFO L226 Difference]: Without dead ends: 2975 [2021-11-05 13:41:22,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3186.03ms TimeCoverageRelationStatistics Valid=348, Invalid=1058, Unknown=0, NotChecked=0, Total=1406 [2021-11-05 13:41:22,799 INFO L933 BasicCegarLoop]: 1975 mSDtfsCounter, 5909 mSDsluCounter, 14089 mSDsCounter, 0 mSdLazyCounter, 2789 mSolverCounterSat, 243 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12556.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5909 SdHoareTripleChecker+Valid, 16064 SdHoareTripleChecker+Invalid, 3035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.28ms SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 2789 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13271.59ms IncrementalHoareTripleChecker+Time [2021-11-05 13:41:22,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5909 Valid, 16064 Invalid, 3035 Unknown, 0 Unchecked, 36.28ms Time], IncrementalHoareTripleChecker [243 Valid, 2789 Invalid, 3 Unknown, 0 Unchecked, 13271.59ms Time] [2021-11-05 13:41:22,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2021-11-05 13:41:22,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1081. [2021-11-05 13:41:22,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1056 states have (on average 1.285037878787879) internal successors, (1357), 1080 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:41:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1357 transitions. [2021-11-05 13:41:22,864 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1357 transitions. Word has length 138 [2021-11-05 13:41:22,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:41:22,865 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 1357 transitions. [2021-11-05 13:41:22,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:41:22,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1357 transitions. [2021-11-05 13:41:22,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-05 13:41:22,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:41:22,866 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] [2021-11-05 13:41:22,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-05 13:41:23,086 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 [2021-11-05 13:41:23,086 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)] === [2021-11-05 13:41:23,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:41:23,087 INFO L85 PathProgramCache]: Analyzing trace with hash -653265510, now seen corresponding path program 1 times [2021-11-05 13:41:23,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:41:23,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465266606] [2021-11-05 13:41:23,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:41:23,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:41:23,165 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:41:23,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1919510879] [2021-11-05 13:41:23,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:41:23,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:41:23,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:41:23,167 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:41:23,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-05 13:41:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:41:24,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 3172 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-05 13:41:24,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:41:25,281 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 [2021-11-05 13:41:25,287 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 [2021-11-05 13:41:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:41:25,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:41:25,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:41:25,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465266606] [2021-11-05 13:41:25,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:41:25,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919510879] [2021-11-05 13:41:25,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919510879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:41:25,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:41:25,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 13:41:25,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713371967] [2021-11-05 13:41:25,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:41:25,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 13:41:25,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:41:25,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 13:41:25,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-05 13:41:25,659 INFO L87 Difference]: Start difference. First operand 1081 states and 1357 transitions. Second operand has 10 states, 10 states have (on average 14.0) internal successors, (140), 10 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:41:27,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:41:29,847 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:41:32,046 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:41:41,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:41:41,370 INFO L93 Difference]: Finished difference Result 3502 states and 4379 transitions. [2021-11-05 13:41:41,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-05 13:41:41,371 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.0) internal successors, (140), 10 states have internal predecessors, (140), 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 140 [2021-11-05 13:41:41,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:41:41,378 INFO L225 Difference]: With dead ends: 3502 [2021-11-05 13:41:41,378 INFO L226 Difference]: Without dead ends: 2521 [2021-11-05 13:41:41,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1905.90ms TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2021-11-05 13:41:41,381 INFO L933 BasicCegarLoop]: 1948 mSDtfsCounter, 3867 mSDsluCounter, 10946 mSDsCounter, 0 mSdLazyCounter, 2793 mSolverCounterSat, 120 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12802.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3867 SdHoareTripleChecker+Valid, 12894 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.65ms SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2793 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13849.05ms IncrementalHoareTripleChecker+Time [2021-11-05 13:41:41,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3867 Valid, 12894 Invalid, 2916 Unknown, 0 Unchecked, 31.65ms Time], IncrementalHoareTripleChecker [120 Valid, 2793 Invalid, 3 Unknown, 0 Unchecked, 13849.05ms Time] [2021-11-05 13:41:41,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2021-11-05 13:41:41,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 1888. [2021-11-05 13:41:41,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1863 states have (on average 1.2887815351583467) internal successors, (2401), 1887 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:41:41,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2401 transitions. [2021-11-05 13:41:41,523 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2401 transitions. Word has length 140 [2021-11-05 13:41:41,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:41:41,523 INFO L470 AbstractCegarLoop]: Abstraction has 1888 states and 2401 transitions. [2021-11-05 13:41:41,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.0) internal successors, (140), 10 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:41:41,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2401 transitions. [2021-11-05 13:41:41,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-05 13:41:41,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:41:41,525 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] [2021-11-05 13:41:41,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-05 13:41:41,751 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 [2021-11-05 13:41:41,751 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)] === [2021-11-05 13:41:41,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:41:41,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1608307740, now seen corresponding path program 1 times [2021-11-05 13:41:41,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:41:41,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904440712] [2021-11-05 13:41:41,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:41:41,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:41:41,829 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:41:41,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1390243271] [2021-11-05 13:41:41,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:41:41,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:41:41,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:41:41,831 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:41:41,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-05 13:41:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:41:42,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 3167 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 13:41:42,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:41:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:41:42,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:41:42,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:41:42,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904440712] [2021-11-05 13:41:42,912 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:41:42,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390243271] [2021-11-05 13:41:42,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390243271] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:41:42,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:41:42,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:41:42,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011356440] [2021-11-05 13:41:42,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:41:42,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:41:42,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:41:42,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:41:42,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:41:42,914 INFO L87 Difference]: Start difference. First operand 1888 states and 2401 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:41:44,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:41:44,561 INFO L93 Difference]: Finished difference Result 4036 states and 5174 transitions. [2021-11-05 13:41:44,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:41:44,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 140 [2021-11-05 13:41:44,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:41:44,569 INFO L225 Difference]: With dead ends: 4036 [2021-11-05 13:41:44,569 INFO L226 Difference]: Without dead ends: 2195 [2021-11-05 13:41:44,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.62ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:41:44,572 INFO L933 BasicCegarLoop]: 1372 mSDtfsCounter, 254 mSDsluCounter, 2004 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1380.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 3376 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.00ms SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1518.51ms IncrementalHoareTripleChecker+Time [2021-11-05 13:41:44,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 3376 Invalid, 659 Unknown, 0 Unchecked, 5.00ms Time], IncrementalHoareTripleChecker [137 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 1518.51ms Time] [2021-11-05 13:41:44,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2021-11-05 13:41:44,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 2008. [2021-11-05 13:41:44,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2008 states, 1983 states have (on average 1.269793242561775) internal successors, (2518), 2007 states have internal predecessors, (2518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:41:44,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 2518 transitions. [2021-11-05 13:41:44,704 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 2518 transitions. Word has length 140 [2021-11-05 13:41:44,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:41:44,705 INFO L470 AbstractCegarLoop]: Abstraction has 2008 states and 2518 transitions. [2021-11-05 13:41:44,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:41:44,705 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 2518 transitions. [2021-11-05 13:41:44,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-05 13:41:44,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:41:44,706 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:41:44,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-05 13:41:44,927 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 [2021-11-05 13:41:44,927 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)] === [2021-11-05 13:41:44,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:41:44,928 INFO L85 PathProgramCache]: Analyzing trace with hash -374324517, now seen corresponding path program 1 times [2021-11-05 13:41:44,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:41:44,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510905255] [2021-11-05 13:41:44,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:41:44,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:41:45,001 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:41:45,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [398874000] [2021-11-05 13:41:45,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:41:45,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:41:45,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:41:45,004 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:41:45,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-05 13:41:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:41:46,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 3197 conjuncts, 139 conjunts are in the unsatisfiable core [2021-11-05 13:41:46,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:41:46,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 13:41:46,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:41:46,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-05 13:41:47,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:41:47,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-05 13:41:47,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:41:47,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-05 13:41:47,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:41:47,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-05 13:41:47,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:41:47,653 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 [2021-11-05 13:41:47,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:41:47,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-05 13:41:47,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:41:47,707 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 [2021-11-05 13:41:48,102 INFO L354 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2021-11-05 13:41:48,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 33 [2021-11-05 13:41:48,465 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 87 treesize of output 86 [2021-11-05 13:41:48,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:41:48,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 74 [2021-11-05 13:41:48,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:41:48,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 59 [2021-11-05 13:41:54,280 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-11-05 13:41:54,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 42 [2021-11-05 13:41:55,594 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-05 13:41:55,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 38 [2021-11-05 13:41:58,210 INFO L354 Elim1Store]: treesize reduction 64, result has 28.1 percent of original size [2021-11-05 13:41:58,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 114 [2021-11-05 13:41:58,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:41:58,292 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-05 13:41:58,292 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 108 treesize of output 99 [2021-11-05 13:41:58,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:41:58,365 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-05 13:41:58,366 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 93 treesize of output 84 [2021-11-05 13:42:02,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:42:02,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-05 13:42:02,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:42:02,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-05 13:42:03,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2021-11-05 13:42:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:42:03,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:42:03,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:42:03,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510905255] [2021-11-05 13:42:03,680 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:42:03,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398874000] [2021-11-05 13:42:03,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398874000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:42:03,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:42:03,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-11-05 13:42:03,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443289279] [2021-11-05 13:42:03,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:42:03,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-05 13:42:03,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:42:03,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-05 13:42:03,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2021-11-05 13:42:03,683 INFO L87 Difference]: Start difference. First operand 2008 states and 2518 transitions. Second operand has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:42:05,741 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 [] [2021-11-05 13:42:07,926 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:42:10,146 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:42:12,334 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:42:14,542 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:42:16,885 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:42:19,055 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:42:32,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:42:32,228 INFO L93 Difference]: Finished difference Result 4016 states and 5034 transitions. [2021-11-05 13:42:32,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-05 13:42:32,229 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 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 141 [2021-11-05 13:42:32,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:42:32,234 INFO L225 Difference]: With dead ends: 4016 [2021-11-05 13:42:32,234 INFO L226 Difference]: Without dead ends: 2069 [2021-11-05 13:42:32,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 13142.04ms TimeCoverageRelationStatistics Valid=196, Invalid=1136, Unknown=0, NotChecked=0, Total=1332 [2021-11-05 13:42:32,238 INFO L933 BasicCegarLoop]: 1211 mSDtfsCounter, 155 mSDsluCounter, 13125 mSDsCounter, 0 mSdLazyCounter, 3687 mSolverCounterSat, 33 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24956.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 14336 SdHoareTripleChecker+Invalid, 4598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.53ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3687 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 871 IncrementalHoareTripleChecker+Unchecked, 26960.10ms IncrementalHoareTripleChecker+Time [2021-11-05 13:42:32,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 14336 Invalid, 4598 Unknown, 0 Unchecked, 32.53ms Time], IncrementalHoareTripleChecker [33 Valid, 3687 Invalid, 7 Unknown, 871 Unchecked, 26960.10ms Time] [2021-11-05 13:42:32,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2021-11-05 13:42:32,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 2042. [2021-11-05 13:42:32,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2042 states, 2017 states have (on average 1.2687159147248388) internal successors, (2559), 2041 states have internal predecessors, (2559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:42:32,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 2559 transitions. [2021-11-05 13:42:32,341 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 2559 transitions. Word has length 141 [2021-11-05 13:42:32,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:42:32,342 INFO L470 AbstractCegarLoop]: Abstraction has 2042 states and 2559 transitions. [2021-11-05 13:42:32,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.862068965517241) internal successors, (141), 29 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:42:32,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 2559 transitions. [2021-11-05 13:42:32,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-05 13:42:32,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:42:32,344 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] [2021-11-05 13:42:32,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-05 13:42:32,559 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 [2021-11-05 13:42:32,559 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)] === [2021-11-05 13:42:32,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:42:32,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1991764967, now seen corresponding path program 1 times [2021-11-05 13:42:32,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:42:32,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621298846] [2021-11-05 13:42:32,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:42:32,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:42:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:42:32,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:42:32,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:42:32,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621298846] [2021-11-05 13:42:32,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621298846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:42:32,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:42:32,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 13:42:32,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574672938] [2021-11-05 13:42:32,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:42:32,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 13:42:32,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:42:32,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 13:42:32,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 13:42:32,755 INFO L87 Difference]: Start difference. First operand 2042 states and 2559 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:42:32,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:42:32,898 INFO L93 Difference]: Finished difference Result 4060 states and 5090 transitions. [2021-11-05 13:42:32,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 13:42:32,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 141 [2021-11-05 13:42:32,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:42:32,903 INFO L225 Difference]: With dead ends: 4060 [2021-11-05 13:42:32,903 INFO L226 Difference]: Without dead ends: 2041 [2021-11-05 13:42:32,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 13:42:32,906 INFO L933 BasicCegarLoop]: 1247 mSDtfsCounter, 0 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2484 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.47ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.29ms IncrementalHoareTripleChecker+Time [2021-11-05 13:42:32,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2484 Invalid, 14 Unknown, 0 Unchecked, 1.47ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 54.29ms Time] [2021-11-05 13:42:32,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2041 states. [2021-11-05 13:42:33,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2041 to 2040. [2021-11-05 13:42:33,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2040 states, 2015 states have (on average 1.26848635235732) internal successors, (2556), 2039 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:42:33,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 2556 transitions. [2021-11-05 13:42:33,006 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 2556 transitions. Word has length 141 [2021-11-05 13:42:33,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:42:33,008 INFO L470 AbstractCegarLoop]: Abstraction has 2040 states and 2556 transitions. [2021-11-05 13:42:33,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:42:33,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 2556 transitions. [2021-11-05 13:42:33,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-05 13:42:33,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:42:33,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:42:33,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-05 13:42:33,011 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)] === [2021-11-05 13:42:33,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:42:33,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1717355586, now seen corresponding path program 1 times [2021-11-05 13:42:33,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:42:33,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966528913] [2021-11-05 13:42:33,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:42:33,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:42:33,081 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:42:33,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1267429835] [2021-11-05 13:42:33,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:42:33,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:42:33,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:42:33,083 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:42:33,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-05 13:42:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:42:33,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 3172 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-05 13:42:33,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:42:34,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:42:34,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:42:34,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:42:34,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966528913] [2021-11-05 13:42:34,279 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:42:34,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267429835] [2021-11-05 13:42:34,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267429835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:42:34,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:42:34,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:42:34,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105203731] [2021-11-05 13:42:34,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:42:34,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:42:34,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:42:34,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:42:34,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:42:34,281 INFO L87 Difference]: Start difference. First operand 2040 states and 2556 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) [2021-11-05 13:42:36,321 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:42:38,544 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:42:44,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:42:44,926 INFO L93 Difference]: Finished difference Result 5169 states and 6461 transitions. [2021-11-05 13:42:44,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:42:44,927 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 [2021-11-05 13:42:44,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:42:44,932 INFO L225 Difference]: With dead ends: 5169 [2021-11-05 13:42:44,932 INFO L226 Difference]: Without dead ends: 3209 [2021-11-05 13:42:44,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 204.86ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:42:44,934 INFO L933 BasicCegarLoop]: 1675 mSDtfsCounter, 792 mSDsluCounter, 3527 mSDsCounter, 0 mSdLazyCounter, 1676 mSolverCounterSat, 241 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9325.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 5202 SdHoareTripleChecker+Invalid, 1919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.97ms SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1676 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10287.42ms IncrementalHoareTripleChecker+Time [2021-11-05 13:42:44,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 5202 Invalid, 1919 Unknown, 0 Unchecked, 13.97ms Time], IncrementalHoareTripleChecker [241 Valid, 1676 Invalid, 2 Unknown, 0 Unchecked, 10287.42ms Time] [2021-11-05 13:42:44,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3209 states. [2021-11-05 13:42:45,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3209 to 2102. [2021-11-05 13:42:45,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2102 states, 2077 states have (on average 1.2599903707270101) internal successors, (2617), 2101 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:42:45,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 2617 transitions. [2021-11-05 13:42:45,021 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 2617 transitions. Word has length 142 [2021-11-05 13:42:45,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:42:45,022 INFO L470 AbstractCegarLoop]: Abstraction has 2102 states and 2617 transitions. [2021-11-05 13:42:45,022 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) [2021-11-05 13:42:45,022 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 2617 transitions. [2021-11-05 13:42:45,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-05 13:42:45,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:42:45,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:42:45,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-11-05 13:42:45,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:42:45,227 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)] === [2021-11-05 13:42:45,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:42:45,227 INFO L85 PathProgramCache]: Analyzing trace with hash -149353088, now seen corresponding path program 1 times [2021-11-05 13:42:45,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:42:45,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377545067] [2021-11-05 13:42:45,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:42:45,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:42:45,285 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:42:45,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561577211] [2021-11-05 13:42:45,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:42:45,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:42:45,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:42:45,287 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:42:45,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-05 13:42:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:42:46,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 3177 conjuncts, 108 conjunts are in the unsatisfiable core [2021-11-05 13:42:46,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:42:47,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-11-05 13:42:47,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2021-11-05 13:42:47,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-11-05 13:42:47,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2021-11-05 13:42:47,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 13:42:47,743 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:42:47,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 50 [2021-11-05 13:42:48,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:42:48,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:42:48,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:42:48,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377545067] [2021-11-05 13:42:48,063 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:42:48,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561577211] [2021-11-05 13:42:48,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561577211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:42:48,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:42:48,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-05 13:42:48,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661122931] [2021-11-05 13:42:48,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:42:48,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 13:42:48,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:42:48,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 13:42:48,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-11-05 13:42:48,066 INFO L87 Difference]: Start difference. First operand 2102 states and 2617 transitions. Second operand has 15 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:42:50,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:42:52,285 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:42:54,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:42:56,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:42:58,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:43:01,147 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:43:19,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:43:19,191 INFO L93 Difference]: Finished difference Result 5714 states and 7065 transitions. [2021-11-05 13:43:19,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-05 13:43:19,192 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-11-05 13:43:19,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:43:19,198 INFO L225 Difference]: With dead ends: 5714 [2021-11-05 13:43:19,198 INFO L226 Difference]: Without dead ends: 3908 [2021-11-05 13:43:19,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 3294.24ms TimeCoverageRelationStatistics Valid=416, Invalid=1476, Unknown=0, NotChecked=0, Total=1892 [2021-11-05 13:43:19,201 INFO L933 BasicCegarLoop]: 2087 mSDtfsCounter, 4405 mSDsluCounter, 18398 mSDsCounter, 0 mSdLazyCounter, 5078 mSolverCounterSat, 165 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25709.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4405 SdHoareTripleChecker+Valid, 20485 SdHoareTripleChecker+Invalid, 5249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.36ms SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 5078 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27928.67ms IncrementalHoareTripleChecker+Time [2021-11-05 13:43:19,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4405 Valid, 20485 Invalid, 5249 Unknown, 0 Unchecked, 50.36ms Time], IncrementalHoareTripleChecker [165 Valid, 5078 Invalid, 6 Unknown, 0 Unchecked, 27928.67ms Time] [2021-11-05 13:43:19,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3908 states. [2021-11-05 13:43:19,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3908 to 3116. [2021-11-05 13:43:19,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3116 states, 3091 states have (on average 1.2607570365577483) internal successors, (3897), 3115 states have internal predecessors, (3897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:43:19,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3116 states to 3116 states and 3897 transitions. [2021-11-05 13:43:19,325 INFO L78 Accepts]: Start accepts. Automaton has 3116 states and 3897 transitions. Word has length 142 [2021-11-05 13:43:19,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:43:19,325 INFO L470 AbstractCegarLoop]: Abstraction has 3116 states and 3897 transitions. [2021-11-05 13:43:19,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:43:19,325 INFO L276 IsEmpty]: Start isEmpty. Operand 3116 states and 3897 transitions. [2021-11-05 13:43:19,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-05 13:43:19,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:43:19,326 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] [2021-11-05 13:43:19,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-05 13:43:19,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:43:19,527 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)] === [2021-11-05 13:43:19,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:43:19,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1932908619, now seen corresponding path program 1 times [2021-11-05 13:43:19,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:43:19,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197624948] [2021-11-05 13:43:19,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:43:19,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:43:19,584 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:43:19,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [214790270] [2021-11-05 13:43:19,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:43:19,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:43:19,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:43:19,586 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:43:19,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-05 13:43:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:43:20,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 3202 conjuncts, 75 conjunts are in the unsatisfiable core [2021-11-05 13:43:20,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:43:22,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2021-11-05 13:43:22,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-05 13:43:23,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:43:23,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:43:23,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:43:23,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197624948] [2021-11-05 13:43:23,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:43:23,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214790270] [2021-11-05 13:43:23,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214790270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:43:23,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:43:23,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-05 13:43:23,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398374924] [2021-11-05 13:43:23,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:43:23,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 13:43:23,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:43:23,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 13:43:23,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-11-05 13:43:23,214 INFO L87 Difference]: Start difference. First operand 3116 states and 3897 transitions. Second operand has 17 states, 17 states have (on average 8.411764705882353) internal successors, (143), 17 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) [2021-11-05 13:43:25,266 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:43:27,501 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:43:49,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:43:49,682 INFO L93 Difference]: Finished difference Result 10135 states and 12581 transitions. [2021-11-05 13:43:49,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-05 13:43:49,683 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.411764705882353) internal successors, (143), 17 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 [2021-11-05 13:43:49,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:43:49,695 INFO L225 Difference]: With dead ends: 10135 [2021-11-05 13:43:49,695 INFO L226 Difference]: Without dead ends: 8253 [2021-11-05 13:43:49,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 7027.88ms TimeCoverageRelationStatistics Valid=690, Invalid=2616, Unknown=0, NotChecked=0, Total=3306 [2021-11-05 13:43:49,699 INFO L933 BasicCegarLoop]: 2348 mSDtfsCounter, 4959 mSDsluCounter, 17582 mSDsCounter, 0 mSdLazyCounter, 5173 mSolverCounterSat, 209 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18190.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4959 SdHoareTripleChecker+Valid, 19930 SdHoareTripleChecker+Invalid, 5384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.07ms SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 5173 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19688.88ms IncrementalHoareTripleChecker+Time [2021-11-05 13:43:49,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4959 Valid, 19930 Invalid, 5384 Unknown, 0 Unchecked, 55.07ms Time], IncrementalHoareTripleChecker [209 Valid, 5173 Invalid, 2 Unknown, 0 Unchecked, 19688.88ms Time] [2021-11-05 13:43:49,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8253 states. [2021-11-05 13:43:49,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8253 to 3141. [2021-11-05 13:43:49,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3141 states, 3116 states have (on average 1.2609114249037228) internal successors, (3929), 3140 states have internal predecessors, (3929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:43:49,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 3929 transitions. [2021-11-05 13:43:49,893 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 3929 transitions. Word has length 143 [2021-11-05 13:43:49,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:43:49,893 INFO L470 AbstractCegarLoop]: Abstraction has 3141 states and 3929 transitions. [2021-11-05 13:43:49,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.411764705882353) internal successors, (143), 17 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) [2021-11-05 13:43:49,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 3929 transitions. [2021-11-05 13:43:49,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-05 13:43:49,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:43:49,895 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] [2021-11-05 13:43:49,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-05 13:43:50,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:43:50,110 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)] === [2021-11-05 13:43:50,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:43:50,111 INFO L85 PathProgramCache]: Analyzing trace with hash -901867721, now seen corresponding path program 1 times [2021-11-05 13:43:50,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:43:50,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703927855] [2021-11-05 13:43:50,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:43:50,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:43:50,171 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:43:50,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526495552] [2021-11-05 13:43:50,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:43:50,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:43:50,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:43:50,173 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:43:50,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-05 13:43:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:43:51,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 3199 conjuncts, 83 conjunts are in the unsatisfiable core [2021-11-05 13:43:51,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:43:51,836 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-05 13:43:51,837 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 [2021-11-05 13:43:51,895 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-05 13:43:51,895 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 [2021-11-05 13:43:52,098 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 [2021-11-05 13:43:52,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-05 13:43:52,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:43:52,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:43:52,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:43:52,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703927855] [2021-11-05 13:43:52,981 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:43:52,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526495552] [2021-11-05 13:43:52,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526495552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:43:52,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:43:52,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 13:43:52,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723291937] [2021-11-05 13:43:52,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:43:52,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 13:43:52,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:43:52,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 13:43:52,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-11-05 13:43:52,983 INFO L87 Difference]: Start difference. First operand 3141 states and 3929 transitions. Second operand has 16 states, 16 states have (on average 8.9375) internal successors, (143), 16 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) [2021-11-05 13:43:55,036 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:43:57,252 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:43:59,500 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:01,804 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:04,000 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:31,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:44:31,293 INFO L93 Difference]: Finished difference Result 15580 states and 19346 transitions. [2021-11-05 13:44:31,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-05 13:44:31,294 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.9375) internal successors, (143), 16 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 [2021-11-05 13:44:31,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:44:31,317 INFO L225 Difference]: With dead ends: 15580 [2021-11-05 13:44:31,317 INFO L226 Difference]: Without dead ends: 13761 [2021-11-05 13:44:31,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1816 ImplicationChecksByTransitivity, 5172.81ms TimeCoverageRelationStatistics Valid=986, Invalid=4564, Unknown=0, NotChecked=0, Total=5550 [2021-11-05 13:44:31,323 INFO L933 BasicCegarLoop]: 3743 mSDtfsCounter, 8245 mSDsluCounter, 35703 mSDsCounter, 0 mSdLazyCounter, 7219 mSolverCounterSat, 176 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29758.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8245 SdHoareTripleChecker+Valid, 39446 SdHoareTripleChecker+Invalid, 7400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 88.20ms SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 7219 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32560.70ms IncrementalHoareTripleChecker+Time [2021-11-05 13:44:31,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8245 Valid, 39446 Invalid, 7400 Unknown, 0 Unchecked, 88.20ms Time], IncrementalHoareTripleChecker [176 Valid, 7219 Invalid, 5 Unknown, 0 Unchecked, 32560.70ms Time] [2021-11-05 13:44:31,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13761 states. [2021-11-05 13:44:31,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13761 to 3956. [2021-11-05 13:44:31,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3956 states, 3931 states have (on average 1.2620198422793183) internal successors, (4961), 3955 states have internal predecessors, (4961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:44:31,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3956 states to 3956 states and 4961 transitions. [2021-11-05 13:44:31,572 INFO L78 Accepts]: Start accepts. Automaton has 3956 states and 4961 transitions. Word has length 143 [2021-11-05 13:44:31,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:44:31,572 INFO L470 AbstractCegarLoop]: Abstraction has 3956 states and 4961 transitions. [2021-11-05 13:44:31,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.9375) internal successors, (143), 16 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) [2021-11-05 13:44:31,572 INFO L276 IsEmpty]: Start isEmpty. Operand 3956 states and 4961 transitions. [2021-11-05 13:44:31,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-05 13:44:31,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:44:31,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:44:31,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-05 13:44:31,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:44:31,774 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)] === [2021-11-05 13:44:31,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:44:31,775 INFO L85 PathProgramCache]: Analyzing trace with hash 779892486, now seen corresponding path program 1 times [2021-11-05 13:44:31,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:44:31,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240707529] [2021-11-05 13:44:31,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:44:31,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:44:31,833 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:44:31,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251792415] [2021-11-05 13:44:31,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:44:31,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:44:31,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:44:31,840 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:44:31,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-05 13:44:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:44:32,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 3182 conjuncts, 150 conjunts are in the unsatisfiable core [2021-11-05 13:44:32,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:44:34,149 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-05 13:44:34,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 44 [2021-11-05 13:44:34,206 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-05 13:44:34,207 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 44 treesize of output 40 [2021-11-05 13:44:34,617 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 [2021-11-05 13:44:34,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-05 13:44:36,000 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-05 13:44:36,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 44 [2021-11-05 13:44:36,074 INFO L354 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2021-11-05 13:44:36,074 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 44 treesize of output 40 [2021-11-05 13:44:36,578 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 [2021-11-05 13:44:36,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-05 13:44:37,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:44:37,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:44:37,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:44:37,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240707529] [2021-11-05 13:44:37,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:44:37,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251792415] [2021-11-05 13:44:37,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251792415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:44:37,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:44:37,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-11-05 13:44:37,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202275179] [2021-11-05 13:44:37,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:44:37,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-05 13:44:37,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:44:37,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-05 13:44:37,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=776, Unknown=0, NotChecked=0, Total=870 [2021-11-05 13:44:37,628 INFO L87 Difference]: Start difference. First operand 3956 states and 4961 transitions. Second operand has 30 states, 30 states have (on average 4.8) internal successors, (144), 30 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:44:39,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:41,913 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:44,136 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:46,456 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:48,905 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:45:34,829 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-05 13:46:54,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:46:54,206 INFO L93 Difference]: Finished difference Result 35054 states and 43344 transitions. [2021-11-05 13:46:54,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 321 states. [2021-11-05 13:46:54,207 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.8) internal successors, (144), 30 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-05 13:46:54,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:46:54,254 INFO L225 Difference]: With dead ends: 35054 [2021-11-05 13:46:54,255 INFO L226 Difference]: Without dead ends: 31549 [2021-11-05 13:46:54,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 343 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51336 ImplicationChecksByTransitivity, 61363.39ms TimeCoverageRelationStatistics Valid=10643, Invalid=108037, Unknown=0, NotChecked=0, Total=118680 [2021-11-05 13:46:54,281 INFO L933 BasicCegarLoop]: 3927 mSDtfsCounter, 34535 mSDsluCounter, 71406 mSDsCounter, 0 mSdLazyCounter, 20755 mSolverCounterSat, 1723 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67104.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34535 SdHoareTripleChecker+Valid, 75333 SdHoareTripleChecker+Invalid, 22484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 253.08ms SdHoareTripleChecker+Time, 1723 IncrementalHoareTripleChecker+Valid, 20755 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73177.76ms IncrementalHoareTripleChecker+Time [2021-11-05 13:46:54,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34535 Valid, 75333 Invalid, 22484 Unknown, 0 Unchecked, 253.08ms Time], IncrementalHoareTripleChecker [1723 Valid, 20755 Invalid, 6 Unknown, 0 Unchecked, 73177.76ms Time] [2021-11-05 13:46:54,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31549 states. [2021-11-05 13:46:55,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31549 to 13573. [2021-11-05 13:46:55,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13573 states, 13548 states have (on average 1.2615146147032772) internal successors, (17091), 13572 states have internal predecessors, (17091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:46:55,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13573 states to 13573 states and 17091 transitions. [2021-11-05 13:46:55,233 INFO L78 Accepts]: Start accepts. Automaton has 13573 states and 17091 transitions. Word has length 144 [2021-11-05 13:46:55,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:46:55,233 INFO L470 AbstractCegarLoop]: Abstraction has 13573 states and 17091 transitions. [2021-11-05 13:46:55,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.8) internal successors, (144), 30 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:46:55,233 INFO L276 IsEmpty]: Start isEmpty. Operand 13573 states and 17091 transitions. [2021-11-05 13:46:55,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-05 13:46:55,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:46:55,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:46:55,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-05 13:46:55,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:46:55,452 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-05 13:46:55,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:46:55,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1681109716, now seen corresponding path program 1 times [2021-11-05 13:46:55,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:46:55,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293338910] [2021-11-05 13:46:55,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:46:55,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:46:55,513 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:46:55,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440598976] [2021-11-05 13:46:55,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:46:55,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:46:55,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:46:55,515 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:46:55,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-05 13:46:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:46:56,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 3187 conjuncts, 119 conjunts are in the unsatisfiable core [2021-11-05 13:46:56,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:46:56,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 13:46:57,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:46:57,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-05 13:46:57,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:46:57,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-05 13:46:57,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:46:57,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-05 13:46:58,126 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-05 13:46:58,126 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 72 treesize of output 71 [2021-11-05 13:46:58,160 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-05 13:46:58,160 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 61 treesize of output 60 [2021-11-05 13:46:58,192 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-05 13:46:58,193 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 50 treesize of output 38 [2021-11-05 13:46:58,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:46:58,255 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 [2021-11-05 13:46:58,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:46:58,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-05 13:46:58,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:46:58,305 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 [2021-11-05 13:46:58,812 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-05 13:46:58,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-05 13:46:59,078 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-05 13:46:59,078 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 91 treesize of output 90 [2021-11-05 13:46:59,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:46:59,144 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-05 13:46:59,144 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 87 treesize of output 78 [2021-11-05 13:46:59,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:46:59,211 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-05 13:46:59,211 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 72 treesize of output 63 [2021-11-05 13:47:00,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:47:00,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-05 13:47:00,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:47:00,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-05 13:47:01,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:47:01,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-05 13:47:06,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2021-11-05 13:47:07,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:47:07,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:47:07,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:47:07,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293338910] [2021-11-05 13:47:07,345 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:47:07,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440598976] [2021-11-05 13:47:07,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440598976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:47:07,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:47:07,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-05 13:47:07,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218623939] [2021-11-05 13:47:07,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:47:07,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-05 13:47:07,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:47:07,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-05 13:47:07,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2021-11-05 13:47:07,346 INFO L87 Difference]: Start difference. First operand 13573 states and 17091 transitions. Second operand has 21 states, 21 states have (on average 6.9523809523809526) internal successors, (146), 21 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:09,393 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:47:11,672 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:47:13,895 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:47:23,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:47:23,483 INFO L93 Difference]: Finished difference Result 27212 states and 34267 transitions. [2021-11-05 13:47:23,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-05 13:47:23,485 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.9523809523809526) internal successors, (146), 21 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-11-05 13:47:23,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:47:23,499 INFO L225 Difference]: With dead ends: 27212 [2021-11-05 13:47:23,500 INFO L226 Difference]: Without dead ends: 13540 [2021-11-05 13:47:23,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 10304.98ms TimeCoverageRelationStatistics Valid=207, Invalid=915, Unknown=0, NotChecked=0, Total=1122 [2021-11-05 13:47:23,511 INFO L933 BasicCegarLoop]: 1204 mSDtfsCounter, 231 mSDsluCounter, 6427 mSDsCounter, 0 mSdLazyCounter, 1722 mSolverCounterSat, 59 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11495.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 7631 SdHoareTripleChecker+Invalid, 1784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.94ms SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1722 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12920.91ms IncrementalHoareTripleChecker+Time [2021-11-05 13:47:23,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 7631 Invalid, 1784 Unknown, 0 Unchecked, 15.94ms Time], IncrementalHoareTripleChecker [59 Valid, 1722 Invalid, 3 Unknown, 0 Unchecked, 12920.91ms Time] [2021-11-05 13:47:23,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13540 states. [2021-11-05 13:47:24,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13540 to 13539. [2021-11-05 13:47:24,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13539 states, 13514 states have (on average 1.2616545804351043) internal successors, (17050), 13538 states have internal predecessors, (17050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:24,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13539 states to 13539 states and 17050 transitions. [2021-11-05 13:47:24,281 INFO L78 Accepts]: Start accepts. Automaton has 13539 states and 17050 transitions. Word has length 146 [2021-11-05 13:47:24,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:47:24,282 INFO L470 AbstractCegarLoop]: Abstraction has 13539 states and 17050 transitions. [2021-11-05 13:47:24,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.9523809523809526) internal successors, (146), 21 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:24,282 INFO L276 IsEmpty]: Start isEmpty. Operand 13539 states and 17050 transitions. [2021-11-05 13:47:24,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-05 13:47:24,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:47:24,285 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] [2021-11-05 13:47:24,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-05 13:47:24,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-05 13:47:24,512 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-05 13:47:24,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:47:24,512 INFO L85 PathProgramCache]: Analyzing trace with hash -832263013, now seen corresponding path program 1 times [2021-11-05 13:47:24,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:47:24,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872197541] [2021-11-05 13:47:24,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:47:24,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:47:24,569 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:47:24,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926316431] [2021-11-05 13:47:24,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:47:24,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:47:24,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:47:24,571 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:47:24,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-05 13:47:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:47:25,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 3224 conjuncts, 91 conjunts are in the unsatisfiable core [2021-11-05 13:47:25,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:47:26,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-05 13:47:26,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2021-11-05 13:47:26,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-05 13:47:26,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2021-11-05 13:47:26,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 13:47:26,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 37 [2021-11-05 13:47:27,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:47:27,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:47:27,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:47:27,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872197541] [2021-11-05 13:47:27,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:47:27,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926316431] [2021-11-05 13:47:27,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926316431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:47:27,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:47:27,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 13:47:27,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186785848] [2021-11-05 13:47:27,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:47:27,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 13:47:27,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:47:27,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 13:47:27,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-05 13:47:27,116 INFO L87 Difference]: Start difference. First operand 13539 states and 17050 transitions. Second operand has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:29,265 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:47:31,506 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:47:33,834 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:47:36,066 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:47:38,325 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:47:49,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:47:49,339 INFO L93 Difference]: Finished difference Result 25985 states and 32661 transitions. [2021-11-05 13:47:49,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 13:47:49,340 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 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 148 [2021-11-05 13:47:49,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:47:49,358 INFO L225 Difference]: With dead ends: 25985 [2021-11-05 13:47:49,358 INFO L226 Difference]: Without dead ends: 19616 [2021-11-05 13:47:49,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1102.37ms TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2021-11-05 13:47:49,363 INFO L933 BasicCegarLoop]: 1931 mSDtfsCounter, 3324 mSDsluCounter, 9691 mSDsCounter, 0 mSdLazyCounter, 2680 mSolverCounterSat, 123 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18237.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3324 SdHoareTripleChecker+Valid, 11622 SdHoareTripleChecker+Invalid, 2808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.04ms SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2680 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20372.88ms IncrementalHoareTripleChecker+Time [2021-11-05 13:47:49,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3324 Valid, 11622 Invalid, 2808 Unknown, 0 Unchecked, 29.04ms Time], IncrementalHoareTripleChecker [123 Valid, 2680 Invalid, 5 Unknown, 0 Unchecked, 20372.88ms Time] [2021-11-05 13:47:49,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19616 states. [2021-11-05 13:47:50,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19616 to 13562. [2021-11-05 13:47:50,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13562 states, 13537 states have (on average 1.2615793750461697) internal successors, (17078), 13561 states have internal predecessors, (17078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:50,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13562 states to 13562 states and 17078 transitions. [2021-11-05 13:47:50,075 INFO L78 Accepts]: Start accepts. Automaton has 13562 states and 17078 transitions. Word has length 148 [2021-11-05 13:47:50,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:47:50,075 INFO L470 AbstractCegarLoop]: Abstraction has 13562 states and 17078 transitions. [2021-11-05 13:47:50,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:50,076 INFO L276 IsEmpty]: Start isEmpty. Operand 13562 states and 17078 transitions. [2021-11-05 13:47:50,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-05 13:47:50,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:47:50,078 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] [2021-11-05 13:47:50,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-05 13:47:50,303 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,SelfDestructingSolverStorable24 [2021-11-05 13:47:50,303 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-05 13:47:50,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:47:50,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1839170597, now seen corresponding path program 1 times [2021-11-05 13:47:50,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:47:50,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985552089] [2021-11-05 13:47:50,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:47:50,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:47:50,402 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:47:50,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1771207974] [2021-11-05 13:47:50,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:47:50,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:47:50,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:47:50,407 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) [2021-11-05 13:47:50,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-05 13:47:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:47:51,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 3224 conjuncts, 165 conjunts are in the unsatisfiable core [2021-11-05 13:47:51,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:47:54,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-05 13:47:54,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2021-11-05 13:47:55,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-05 13:47:55,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2021-11-05 13:47:55,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 13:47:55,626 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:47:55,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 47 [2021-11-05 13:47:55,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 13:47:55,638 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 13:47:55,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 20 [2021-11-05 13:47:56,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:47:56,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:47:56,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:47:56,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985552089] [2021-11-05 13:47:56,069 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:47:56,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771207974] [2021-11-05 13:47:56,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771207974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:47:56,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:47:56,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-05 13:47:56,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846703986] [2021-11-05 13:47:56,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:47:56,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-05 13:47:56,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:47:56,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-05 13:47:56,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2021-11-05 13:47:56,071 INFO L87 Difference]: Start difference. First operand 13562 states and 17078 transitions. Second operand has 25 states, 25 states have (on average 5.92) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:58,112 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:48:00,467 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:48:02,751 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:48:05,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:48:40,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:48:40,519 INFO L93 Difference]: Finished difference Result 28203 states and 35286 transitions. [2021-11-05 13:48:40,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-05 13:48:40,520 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.92) internal successors, (148), 25 states have internal predecessors, (148), 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 148 [2021-11-05 13:48:40,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:48:40,540 INFO L225 Difference]: With dead ends: 28203 [2021-11-05 13:48:40,540 INFO L226 Difference]: Without dead ends: 21866 [2021-11-05 13:48:40,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 8775.43ms TimeCoverageRelationStatistics Valid=807, Invalid=4163, Unknown=0, NotChecked=0, Total=4970 [2021-11-05 13:48:40,547 INFO L933 BasicCegarLoop]: 2128 mSDtfsCounter, 14426 mSDsluCounter, 29871 mSDsCounter, 0 mSdLazyCounter, 7845 mSolverCounterSat, 924 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31836.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14426 SdHoareTripleChecker+Valid, 31999 SdHoareTripleChecker+Invalid, 8773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 103.72ms SdHoareTripleChecker+Time, 924 IncrementalHoareTripleChecker+Valid, 7845 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35652.83ms IncrementalHoareTripleChecker+Time [2021-11-05 13:48:40,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14426 Valid, 31999 Invalid, 8773 Unknown, 0 Unchecked, 103.72ms Time], IncrementalHoareTripleChecker [924 Valid, 7845 Invalid, 4 Unknown, 0 Unchecked, 35652.83ms Time] [2021-11-05 13:48:40,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21866 states. [2021-11-05 13:48:41,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21866 to 13058. [2021-11-05 13:48:41,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13058 states, 13033 states have (on average 1.2605693240236324) internal successors, (16429), 13057 states have internal predecessors, (16429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:48:41,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13058 states to 13058 states and 16429 transitions. [2021-11-05 13:48:41,323 INFO L78 Accepts]: Start accepts. Automaton has 13058 states and 16429 transitions. Word has length 148 [2021-11-05 13:48:41,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:48:41,323 INFO L470 AbstractCegarLoop]: Abstraction has 13058 states and 16429 transitions. [2021-11-05 13:48:41,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.92) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:48:41,324 INFO L276 IsEmpty]: Start isEmpty. Operand 13058 states and 16429 transitions. [2021-11-05 13:48:41,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-05 13:48:41,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:48:41,326 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] [2021-11-05 13:48:41,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-05 13:48:41,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-05 13:48:41,533 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-05 13:48:41,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:48:41,534 INFO L85 PathProgramCache]: Analyzing trace with hash -10288936, now seen corresponding path program 1 times [2021-11-05 13:48:41,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:48:41,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131418781] [2021-11-05 13:48:41,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:48:41,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:48:41,592 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:48:41,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [152180598] [2021-11-05 13:48:41,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:48:41,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:48:41,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:48:41,596 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:48:41,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-05 13:48:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:48:43,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 3204 conjuncts, 154 conjunts are in the unsatisfiable core [2021-11-05 13:48:43,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:48:43,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 13:48:43,821 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-05 13:48:43,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-05 13:48:44,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:48:44,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-05 13:48:44,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:48:44,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-05 13:48:44,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:48:44,987 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 [2021-11-05 13:48:45,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:48:45,027 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 [2021-11-05 13:48:45,425 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-05 13:48:45,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-11-05 13:48:45,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:48:45,680 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-05 13:48:45,680 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 [2021-11-05 13:48:45,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:48:45,739 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-05 13:48:45,739 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 [2021-11-05 13:48:46,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:48:46,650 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-05 13:48:46,650 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 [2021-11-05 13:48:46,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:48:46,698 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-05 13:48:46,698 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 [2021-11-05 13:48:46,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-05 13:48:46,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-05 13:48:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:48:47,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:48:47,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:48:47,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131418781] [2021-11-05 13:48:47,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:48:47,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152180598] [2021-11-05 13:48:47,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152180598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:48:47,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:48:47,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-05 13:48:47,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833012563] [2021-11-05 13:48:47,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:48:47,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-05 13:48:47,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:48:47,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-05 13:48:47,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2021-11-05 13:48:47,377 INFO L87 Difference]: Start difference. First operand 13058 states and 16429 transitions. Second operand has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 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) [2021-11-05 13:48:49,419 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:48:51,911 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:48:54,219 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:48:56,664 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:48:58,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:49:11,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:49:11,708 INFO L93 Difference]: Finished difference Result 26399 states and 33183 transitions. [2021-11-05 13:49:11,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-05 13:49:11,709 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 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 [2021-11-05 13:49:11,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:49:11,721 INFO L225 Difference]: With dead ends: 26399 [2021-11-05 13:49:11,721 INFO L226 Difference]: Without dead ends: 14434 [2021-11-05 13:49:11,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 2767.95ms TimeCoverageRelationStatistics Valid=187, Invalid=1145, Unknown=0, NotChecked=0, Total=1332 [2021-11-05 13:49:11,731 INFO L933 BasicCegarLoop]: 1531 mSDtfsCounter, 956 mSDsluCounter, 11695 mSDsCounter, 0 mSdLazyCounter, 2567 mSolverCounterSat, 72 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19267.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 13226 SdHoareTripleChecker+Invalid, 3347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.46ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2567 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 703 IncrementalHoareTripleChecker+Unchecked, 22096.02ms IncrementalHoareTripleChecker+Time [2021-11-05 13:49:11,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [956 Valid, 13226 Invalid, 3347 Unknown, 0 Unchecked, 27.46ms Time], IncrementalHoareTripleChecker [72 Valid, 2567 Invalid, 5 Unknown, 703 Unchecked, 22096.02ms Time] [2021-11-05 13:49:11,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14434 states. [2021-11-05 13:49:12,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14434 to 13192. [2021-11-05 13:49:12,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13192 states, 13167 states have (on average 1.2601199969621022) internal successors, (16592), 13191 states have internal predecessors, (16592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:49:12,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13192 states to 13192 states and 16592 transitions. [2021-11-05 13:49:12,493 INFO L78 Accepts]: Start accepts. Automaton has 13192 states and 16592 transitions. Word has length 149 [2021-11-05 13:49:12,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:49:12,493 INFO L470 AbstractCegarLoop]: Abstraction has 13192 states and 16592 transitions. [2021-11-05 13:49:12,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 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) [2021-11-05 13:49:12,493 INFO L276 IsEmpty]: Start isEmpty. Operand 13192 states and 16592 transitions. [2021-11-05 13:49:12,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-05 13:49:12,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:49:12,495 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] [2021-11-05 13:49:12,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-05 13:49:12,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:49:12,704 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-05 13:49:12,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:49:12,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1672155112, now seen corresponding path program 1 times [2021-11-05 13:49:12,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:49:12,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262131385] [2021-11-05 13:49:12,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:49:12,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:49:12,756 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:49:12,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1779124797] [2021-11-05 13:49:12,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:49:12,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:49:12,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:49:12,758 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:49:12,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-05 13:49:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:49:13,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 3204 conjuncts, 80 conjunts are in the unsatisfiable core [2021-11-05 13:49:13,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:49:13,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 13:49:13,998 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-05 13:49:13,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-05 13:49:14,120 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 23 treesize of output 19 [2021-11-05 13:49:14,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:49:14,348 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 35 treesize of output 28 [2021-11-05 13:49:14,806 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-05 13:49:14,806 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 31 [2021-11-05 13:49:14,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:49:14,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 26 [2021-11-05 13:49:15,259 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-11-05 13:49:15,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-11-05 13:49:15,444 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-11-05 13:49:15,445 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 43 treesize of output 30 [2021-11-05 13:49:16,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:49:16,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:49:16,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:49:16,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262131385] [2021-11-05 13:49:16,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:49:16,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779124797] [2021-11-05 13:49:16,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779124797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:49:16,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:49:16,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-05 13:49:16,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834653120] [2021-11-05 13:49:16,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:49:16,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 13:49:16,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:49:16,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 13:49:16,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-05 13:49:16,132 INFO L87 Difference]: Start difference. First operand 13192 states and 16592 transitions. Second operand has 15 states, 15 states have (on average 9.933333333333334) internal successors, (149), 15 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) [2021-11-05 13:49:18,173 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:49:20,565 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:49:22,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:49:25,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:49:27,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:49:30,041 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:49:38,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:49:38,082 INFO L93 Difference]: Finished difference Result 26340 states and 33133 transitions. [2021-11-05 13:49:38,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 13:49:38,083 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.933333333333334) internal successors, (149), 15 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 [2021-11-05 13:49:38,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:49:38,094 INFO L225 Difference]: With dead ends: 26340 [2021-11-05 13:49:38,094 INFO L226 Difference]: Without dead ends: 13214 [2021-11-05 13:49:38,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2226.87ms TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2021-11-05 13:49:38,101 INFO L933 BasicCegarLoop]: 1220 mSDtfsCounter, 144 mSDsluCounter, 5924 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 31 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17017.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 7144 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.39ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19486.00ms IncrementalHoareTripleChecker+Time [2021-11-05 13:49:38,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 7144 Invalid, 1684 Unknown, 0 Unchecked, 13.39ms Time], IncrementalHoareTripleChecker [31 Valid, 1647 Invalid, 6 Unknown, 0 Unchecked, 19486.00ms Time] [2021-11-05 13:49:38,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13214 states. [2021-11-05 13:49:38,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13214 to 13192. [2021-11-05 13:49:38,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13192 states, 13167 states have (on average 1.2599681020733653) internal successors, (16590), 13191 states have internal predecessors, (16590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:49:38,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13192 states to 13192 states and 16590 transitions. [2021-11-05 13:49:38,804 INFO L78 Accepts]: Start accepts. Automaton has 13192 states and 16590 transitions. Word has length 149 [2021-11-05 13:49:38,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:49:38,804 INFO L470 AbstractCegarLoop]: Abstraction has 13192 states and 16590 transitions. [2021-11-05 13:49:38,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.933333333333334) internal successors, (149), 15 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) [2021-11-05 13:49:38,804 INFO L276 IsEmpty]: Start isEmpty. Operand 13192 states and 16590 transitions. [2021-11-05 13:49:38,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-05 13:49:38,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:49:38,807 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, 1, 1] [2021-11-05 13:49:38,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-05 13:49:39,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-05 13:49:39,020 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-05 13:49:39,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:49:39,020 INFO L85 PathProgramCache]: Analyzing trace with hash -189971278, now seen corresponding path program 1 times [2021-11-05 13:49:39,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:49:39,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410852172] [2021-11-05 13:49:39,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:49:39,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:49:39,074 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:49:39,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [229139898] [2021-11-05 13:49:39,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:49:39,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:49:39,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:49:39,076 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:49:39,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-05 13:49:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:49:40,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 3209 conjuncts, 127 conjunts are in the unsatisfiable core [2021-11-05 13:49:40,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:49:40,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 13:49:40,463 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-05 13:49:40,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-05 13:49:40,572 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 13 treesize of output 9 [2021-11-05 13:49:40,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:49:40,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-05 13:49:41,358 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-05 13:49:41,359 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 26 treesize of output 25 [2021-11-05 13:49:41,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:49:41,412 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 [2021-11-05 13:49:41,859 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-05 13:49:41,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-11-05 13:49:42,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:49:42,064 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-05 13:49:42,064 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 36 treesize of output 27 [2021-11-05 13:49:42,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:49:42,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 40 [2021-11-05 13:49:42,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:49:42,912 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 26 treesize of output 14 [2021-11-05 13:49:43,552 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 24 treesize of output 12 [2021-11-05 13:49:43,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:49:43,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:49:43,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:49:43,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410852172] [2021-11-05 13:49:43,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:49:43,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229139898] [2021-11-05 13:49:43,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229139898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:49:43,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:49:43,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-05 13:49:43,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146189364] [2021-11-05 13:49:43,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:49:43,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-05 13:49:43,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:49:43,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-05 13:49:43,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2021-11-05 13:49:43,968 INFO L87 Difference]: Start difference. First operand 13192 states and 16590 transitions. Second operand has 24 states, 24 states have (on average 6.291666666666667) internal successors, (151), 24 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) [2021-11-05 13:49:46,008 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:49:48,337 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:49:50,729 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:49:53,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:49:55,766 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:49:58,142 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:50:00,653 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:50:03,239 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:50:05,536 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:50:07,802 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:50:24,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-05 13:50:36,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-05 13:50:39,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:50:39,966 INFO L93 Difference]: Finished difference Result 41125 states and 51253 transitions. [2021-11-05 13:50:39,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-05 13:50:39,968 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.291666666666667) internal successors, (151), 24 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 151 [2021-11-05 13:50:39,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:50:39,996 INFO L225 Difference]: With dead ends: 41125 [2021-11-05 13:50:39,996 INFO L226 Difference]: Without dead ends: 28378 [2021-11-05 13:50:40,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 4477.54ms TimeCoverageRelationStatistics Valid=433, Invalid=2537, Unknown=0, NotChecked=0, Total=2970 [2021-11-05 13:50:40,008 INFO L933 BasicCegarLoop]: 2184 mSDtfsCounter, 2952 mSDsluCounter, 23363 mSDsCounter, 0 mSdLazyCounter, 7365 mSolverCounterSat, 327 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44942.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2952 SdHoareTripleChecker+Valid, 25547 SdHoareTripleChecker+Invalid, 9092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 66.53ms SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 7365 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 1388 IncrementalHoareTripleChecker+Unchecked, 51079.70ms IncrementalHoareTripleChecker+Time [2021-11-05 13:50:40,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2952 Valid, 25547 Invalid, 9092 Unknown, 0 Unchecked, 66.53ms Time], IncrementalHoareTripleChecker [327 Valid, 7365 Invalid, 12 Unknown, 1388 Unchecked, 51079.70ms Time] [2021-11-05 13:50:40,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28378 states. [2021-11-05 13:50:41,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28378 to 25698. [2021-11-05 13:50:41,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25698 states, 25673 states have (on average 1.260078681883691) internal successors, (32350), 25697 states have internal predecessors, (32350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:50:41,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25698 states to 25698 states and 32350 transitions. [2021-11-05 13:50:41,511 INFO L78 Accepts]: Start accepts. Automaton has 25698 states and 32350 transitions. Word has length 151 [2021-11-05 13:50:41,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:50:41,511 INFO L470 AbstractCegarLoop]: Abstraction has 25698 states and 32350 transitions. [2021-11-05 13:50:41,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.291666666666667) internal successors, (151), 24 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) [2021-11-05 13:50:41,511 INFO L276 IsEmpty]: Start isEmpty. Operand 25698 states and 32350 transitions. [2021-11-05 13:50:41,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-05 13:50:41,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:50:41,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:50:41,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-11-05 13:50:41,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-05 13:50:41,715 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-05 13:50:41,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:50:41,716 INFO L85 PathProgramCache]: Analyzing trace with hash 772414834, now seen corresponding path program 1 times [2021-11-05 13:50:41,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:50:41,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014574763] [2021-11-05 13:50:41,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:50:41,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:50:41,766 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:50:41,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [942856040] [2021-11-05 13:50:41,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:50:41,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:50:41,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:50:41,768 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:50:41,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-05 13:50:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:50:42,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 3209 conjuncts, 141 conjunts are in the unsatisfiable core [2021-11-05 13:50:42,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:50:45,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:50:45,203 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 85 treesize of output 73 [2021-11-05 13:50:45,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:50:45,213 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 70 treesize of output 69 [2021-11-05 13:50:45,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:50:45,224 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 66 treesize of output 54 [2021-11-05 13:50:48,658 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 71 treesize of output 70 [2021-11-05 13:50:48,665 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 67 treesize of output 55 [2021-11-05 13:50:48,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2021-11-05 13:50:52,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 13:50:52,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 24 [2021-11-05 13:50:53,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:50:53,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:50:53,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:50:53,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014574763] [2021-11-05 13:50:53,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:50:53,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942856040] [2021-11-05 13:50:53,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942856040] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:50:53,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:50:53,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-05 13:50:53,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036041487] [2021-11-05 13:50:53,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:50:53,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-05 13:50:53,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:50:53,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-05 13:50:53,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=573, Unknown=1, NotChecked=0, Total=650 [2021-11-05 13:50:53,357 INFO L87 Difference]: Start difference. First operand 25698 states and 32350 transitions. Second operand has 26 states, 26 states have (on average 5.8076923076923075) internal successors, (151), 26 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) [2021-11-05 13:50:55,606 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:50:57,936 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:51:00,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:51:02,861 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:51:05,552 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:51:07,879 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:51:10,311 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:51:12,812 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:51:15,395 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:51:17,783 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:51:20,167 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:51:22,691 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:51:25,127 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:52:17,338 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-05 13:52:33,637 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-05 13:52:59,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:52:59,591 INFO L93 Difference]: Finished difference Result 70033 states and 88293 transitions. [2021-11-05 13:52:59,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-11-05 13:52:59,593 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.8076923076923075) internal successors, (151), 26 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 151 [2021-11-05 13:52:59,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:52:59,665 INFO L225 Difference]: With dead ends: 70033 [2021-11-05 13:52:59,666 INFO L226 Difference]: Without dead ends: 57250 [2021-11-05 13:52:59,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2472 ImplicationChecksByTransitivity, 25649.46ms TimeCoverageRelationStatistics Valid=1252, Invalid=7489, Unknown=1, NotChecked=0, Total=8742 [2021-11-05 13:52:59,686 INFO L933 BasicCegarLoop]: 2468 mSDtfsCounter, 7369 mSDsluCounter, 33624 mSDsCounter, 0 mSdLazyCounter, 18633 mSolverCounterSat, 602 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89967.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7369 SdHoareTripleChecker+Valid, 36092 SdHoareTripleChecker+Invalid, 19249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 163.67ms SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 18633 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 103658.39ms IncrementalHoareTripleChecker+Time [2021-11-05 13:52:59,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7369 Valid, 36092 Invalid, 19249 Unknown, 0 Unchecked, 163.67ms Time], IncrementalHoareTripleChecker [602 Valid, 18633 Invalid, 14 Unknown, 0 Unchecked, 103658.39ms Time] [2021-11-05 13:52:59,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57250 states. [2021-11-05 13:53:02,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57250 to 46401. [2021-11-05 13:53:02,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46401 states, 46376 states have (on average 1.2599620493358634) internal successors, (58432), 46400 states have internal predecessors, (58432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:53:03,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46401 states to 46401 states and 58432 transitions. [2021-11-05 13:53:03,022 INFO L78 Accepts]: Start accepts. Automaton has 46401 states and 58432 transitions. Word has length 151 [2021-11-05 13:53:03,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:53:03,022 INFO L470 AbstractCegarLoop]: Abstraction has 46401 states and 58432 transitions. [2021-11-05 13:53:03,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.8076923076923075) internal successors, (151), 26 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) [2021-11-05 13:53:03,022 INFO L276 IsEmpty]: Start isEmpty. Operand 46401 states and 58432 transitions. [2021-11-05 13:53:03,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-05 13:53:03,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:53:03,028 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, 1, 1, 1, 1] [2021-11-05 13:53:03,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-05 13:53:03,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:53:03,229 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-05 13:53:03,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:53:03,229 INFO L85 PathProgramCache]: Analyzing trace with hash -898024660, now seen corresponding path program 1 times [2021-11-05 13:53:03,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:53:03,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88622740] [2021-11-05 13:53:03,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:53:03,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:53:03,286 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:53:03,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1842499451] [2021-11-05 13:53:03,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:53:03,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:53:03,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:53:03,289 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:53:03,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-05 13:53:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:53:04,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 3214 conjuncts, 92 conjunts are in the unsatisfiable core [2021-11-05 13:53:04,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:53:05,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:53:05,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2021-11-05 13:53:05,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:53:05,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-05 13:53:06,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-11-05 13:53:06,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2021-11-05 13:53:06,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2021-11-05 13:53:06,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2021-11-05 13:53:06,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:53:06,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:53:06,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:53:06,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88622740] [2021-11-05 13:53:06,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:53:06,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842499451] [2021-11-05 13:53:06,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842499451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:53:06,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:53:06,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 13:53:06,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45130810] [2021-11-05 13:53:06,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:53:06,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 13:53:06,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:53:06,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 13:53:06,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-11-05 13:53:06,850 INFO L87 Difference]: Start difference. First operand 46401 states and 58432 transitions. Second operand has 16 states, 16 states have (on average 9.5625) internal successors, (153), 16 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:53:09,294 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:53:11,673 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:53:14,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:53:16,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:53:19,238 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:53:21,613 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:53:24,163 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15