./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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_hash_table_swap_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 50333b6a17e96dff6400d2c6a85c0145ae494daf76266f6b6d6936a12a6b2527 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 11:11:28,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 11:11:28,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 11:11:28,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 11:11:28,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 11:11:28,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 11:11:28,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 11:11:28,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 11:11:28,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 11:11:28,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 11:11:28,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 11:11:28,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 11:11:28,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 11:11:28,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 11:11:28,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 11:11:28,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 11:11:28,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 11:11:28,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 11:11:28,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 11:11:28,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 11:11:28,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 11:11:28,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 11:11:28,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 11:11:28,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 11:11:28,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 11:11:28,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 11:11:28,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 11:11:28,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 11:11:28,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 11:11:28,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 11:11:28,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 11:11:28,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 11:11:28,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 11:11:28,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 11:11:28,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 11:11:28,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 11:11:28,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 11:11:28,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 11:11:28,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 11:11:28,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 11:11:28,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 11:11:28,299 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 11:11:28,318 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 11:11:28,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 11:11:28,319 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 11:11:28,319 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 11:11:28,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 11:11:28,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 11:11:28,321 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 11:11:28,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 11:11:28,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 11:11:28,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 11:11:28,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 11:11:28,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 11:11:28,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 11:11:28,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 11:11:28,323 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 11:11:28,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 11:11:28,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 11:11:28,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 11:11:28,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 11:11:28,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 11:11:28,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 11:11:28,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 11:11:28,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 11:11:28,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 11:11:28,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 11:11:28,325 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 11:11:28,326 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 11:11:28,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 11:11:28,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 11:11:28,326 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50333b6a17e96dff6400d2c6a85c0145ae494daf76266f6b6d6936a12a6b2527 [2021-11-06 11:11:28,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 11:11:28,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 11:11:28,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 11:11:28,534 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 11:11:28,535 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 11:11:28,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i [2021-11-06 11:11:28,595 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5303d1292/9b949fc9268d4b2eb51dd0ddd2ea7429/FLAG45165958b [2021-11-06 11:11:29,334 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 11:11:29,335 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i [2021-11-06 11:11:29,380 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5303d1292/9b949fc9268d4b2eb51dd0ddd2ea7429/FLAG45165958b [2021-11-06 11:11:29,414 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5303d1292/9b949fc9268d4b2eb51dd0ddd2ea7429 [2021-11-06 11:11:29,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 11:11:29,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 11:11:29,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 11:11:29,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 11:11:29,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 11:11:29,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:11:29" (1/1) ... [2021-11-06 11:11:29,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b957fa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:29, skipping insertion in model container [2021-11-06 11:11:29,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:11:29" (1/1) ... [2021-11-06 11:11:29,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 11:11:29,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 11:11:29,790 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_hash_table_swap_harness.i[4493,4506] [2021-11-06 11:11:29,797 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_hash_table_swap_harness.i[4553,4566] [2021-11-06 11:11:29,825 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 11:11:29,834 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 11:11:30,927 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:30,928 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:30,928 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:30,929 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:30,930 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:30,952 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:30,952 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:30,962 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:30,963 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:30,965 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:30,965 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:30,966 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:30,966 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:31,405 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 11:11:31,407 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 11:11:31,408 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 11:11:31,409 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 11:11:31,410 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 11:11:31,412 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 11:11:31,412 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 11:11:31,413 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 11:11:31,413 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 11:11:31,414 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 11:11:31,574 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 11:11:31,862 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:31,864 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:31,893 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:31,895 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:31,902 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:31,903 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:31,923 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:31,924 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:31,926 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:31,927 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:31,927 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:31,928 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:31,928 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:31,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 11:11:32,018 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 11:11:32,050 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_hash_table_swap_harness.i[4493,4506] [2021-11-06 11:11:32,051 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_hash_table_swap_harness.i[4553,4566] [2021-11-06 11:11:32,052 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 11:11:32,053 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 11:11:32,089 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,090 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,090 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,091 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,091 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,121 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,122 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,123 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,124 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,124 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,126 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,127 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,127 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,150 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 11:11:32,150 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 11:11:32,151 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 11:11:32,151 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 11:11:32,152 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 11:11:32,152 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 11:11:32,155 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 11:11:32,156 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 11:11:32,156 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 11:11:32,156 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 11:11:32,177 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 11:11:32,252 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,253 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,257 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,258 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,260 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,260 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,271 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,272 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,295 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,296 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,296 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,296 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,296 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:11:32,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 11:11:32,540 INFO L208 MainTranslator]: Completed translation [2021-11-06 11:11:32,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:32 WrapperNode [2021-11-06 11:11:32,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 11:11:32,542 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 11:11:32,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 11:11:32,542 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 11:11:32,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:32" (1/1) ... [2021-11-06 11:11:32,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:32" (1/1) ... [2021-11-06 11:11:32,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 11:11:32,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 11:11:32,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 11:11:32,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 11:11:32,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:32" (1/1) ... [2021-11-06 11:11:32,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:32" (1/1) ... [2021-11-06 11:11:32,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:32" (1/1) ... [2021-11-06 11:11:32,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:32" (1/1) ... [2021-11-06 11:11:32,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:32" (1/1) ... [2021-11-06 11:11:32,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:32" (1/1) ... [2021-11-06 11:11:32,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:32" (1/1) ... [2021-11-06 11:11:32,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 11:11:32,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 11:11:32,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 11:11:32,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 11:11:32,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:32" (1/1) ... [2021-11-06 11:11:32,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 11:11:32,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:11:32,925 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) [2021-11-06 11:11:32,946 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 [2021-11-06 11:11:32,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-06 11:11:32,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 11:11:32,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 11:11:32,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 11:11:32,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 11:11:32,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 11:11:32,959 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-06 11:11:32,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 11:11:32,959 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-06 11:11:32,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 11:11:32,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 11:11:32,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 11:11:32,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 11:11:32,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 11:11:41,687 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 11:11:41,688 INFO L299 CfgBuilder]: Removed 190 assume(true) statements. [2021-11-06 11:11:41,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:11:41 BoogieIcfgContainer [2021-11-06 11:11:41,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 11:11:41,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 11:11:41,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 11:11:41,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 11:11:41,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:11:29" (1/3) ... [2021-11-06 11:11:41,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40de74c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:11:41, skipping insertion in model container [2021-11-06 11:11:41,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:32" (2/3) ... [2021-11-06 11:11:41,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40de74c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:11:41, skipping insertion in model container [2021-11-06 11:11:41,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:11:41" (3/3) ... [2021-11-06 11:11:41,698 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_swap_harness.i [2021-11-06 11:11:41,703 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 11:11:41,703 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-06 11:11:41,744 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 11:11:41,750 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 [2021-11-06 11:11:41,750 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-06 11:11:41,767 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 159 states have (on average 1.3584905660377358) internal successors, (216), 163 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:41,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-06 11:11:41,773 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:11:41,774 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:11:41,775 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:11:41,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:11:41,780 INFO L85 PathProgramCache]: Analyzing trace with hash 67832654, now seen corresponding path program 1 times [2021-11-06 11:11:41,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:11:41,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039426084] [2021-11-06 11:11:41,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:11:41,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:11:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:11:42,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:11:42,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:11:42,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039426084] [2021-11-06 11:11:42,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039426084] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:11:42,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:11:42,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 11:11:42,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018782744] [2021-11-06 11:11:42,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 11:11:42,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:11:42,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 11:11:42,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 11:11:42,475 INFO L87 Difference]: Start difference. First operand has 164 states, 159 states have (on average 1.3584905660377358) internal successors, (216), 163 states have internal predecessors, (216), 0 states have call successors, (0), 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 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:42,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:11:42,503 INFO L93 Difference]: Finished difference Result 323 states and 425 transitions. [2021-11-06 11:11:42,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 11:11:42,505 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-06 11:11:42,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:11:42,513 INFO L225 Difference]: With dead ends: 323 [2021-11-06 11:11:42,513 INFO L226 Difference]: Without dead ends: 158 [2021-11-06 11:11:42,516 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 11:11:42,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-06 11:11:42,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-11-06 11:11:42,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 154 states have (on average 1.2337662337662338) internal successors, (190), 157 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:42,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 190 transitions. [2021-11-06 11:11:42,573 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 190 transitions. Word has length 15 [2021-11-06 11:11:42,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:11:42,574 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 190 transitions. [2021-11-06 11:11:42,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:42,575 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 190 transitions. [2021-11-06 11:11:42,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-06 11:11:42,576 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:11:42,576 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:11:42,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 11:11:42,578 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:11:42,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:11:42,582 INFO L85 PathProgramCache]: Analyzing trace with hash -325194356, now seen corresponding path program 1 times [2021-11-06 11:11:42,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:11:42,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976682285] [2021-11-06 11:11:42,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:11:42,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:11:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:11:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:11:42,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:11:42,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976682285] [2021-11-06 11:11:42,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976682285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:11:42,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:11:42,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 11:11:42,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254080244] [2021-11-06 11:11:42,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 11:11:42,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:11:42,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 11:11:42,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 11:11:42,869 INFO L87 Difference]: Start difference. First operand 158 states and 190 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:42,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:11:42,923 INFO L93 Difference]: Finished difference Result 270 states and 323 transitions. [2021-11-06 11:11:42,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 11:11:42,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-06 11:11:42,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:11:42,931 INFO L225 Difference]: With dead ends: 270 [2021-11-06 11:11:42,931 INFO L226 Difference]: Without dead ends: 238 [2021-11-06 11:11:42,932 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 11:11:42,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-11-06 11:11:42,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 222. [2021-11-06 11:11:42,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 218 states have (on average 1.224770642201835) internal successors, (267), 221 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:42,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 267 transitions. [2021-11-06 11:11:42,951 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 267 transitions. Word has length 15 [2021-11-06 11:11:42,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:11:42,951 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 267 transitions. [2021-11-06 11:11:42,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:42,952 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 267 transitions. [2021-11-06 11:11:42,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-06 11:11:42,953 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:11:42,953 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:11:42,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 11:11:42,954 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:11:42,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:11:42,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1994950714, now seen corresponding path program 1 times [2021-11-06 11:11:42,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:11:42,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356992092] [2021-11-06 11:11:42,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:11:42,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:11:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:11:43,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:11:43,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:11:43,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356992092] [2021-11-06 11:11:43,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356992092] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:11:43,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:11:43,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 11:11:43,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437783000] [2021-11-06 11:11:43,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 11:11:43,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:11:43,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 11:11:43,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 11:11:43,157 INFO L87 Difference]: Start difference. First operand 222 states and 267 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:43,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:11:43,184 INFO L93 Difference]: Finished difference Result 262 states and 313 transitions. [2021-11-06 11:11:43,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 11:11:43,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-11-06 11:11:43,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:11:43,187 INFO L225 Difference]: With dead ends: 262 [2021-11-06 11:11:43,187 INFO L226 Difference]: Without dead ends: 241 [2021-11-06 11:11:43,187 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 11:11:43,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-06 11:11:43,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 237. [2021-11-06 11:11:43,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 233 states have (on average 1.2231759656652361) internal successors, (285), 236 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:43,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 285 transitions. [2021-11-06 11:11:43,205 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 285 transitions. Word has length 16 [2021-11-06 11:11:43,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:11:43,205 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 285 transitions. [2021-11-06 11:11:43,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:43,206 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 285 transitions. [2021-11-06 11:11:43,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-06 11:11:43,209 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:11:43,209 INFO L513 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] [2021-11-06 11:11:43,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 11:11:43,210 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:11:43,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:11:43,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1734286995, now seen corresponding path program 1 times [2021-11-06 11:11:43,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:11:43,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377266147] [2021-11-06 11:11:43,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:11:43,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:11:43,319 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:11:43,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485736138] [2021-11-06 11:11:43,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:11:43,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:11:43,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:11:43,325 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) [2021-11-06 11:11:43,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 11:11:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:11:44,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 2525 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 11:11:44,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:11:44,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:11:44,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:11:44,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377266147] [2021-11-06 11:11:44,587 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:11:44,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485736138] [2021-11-06 11:11:44,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485736138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:11:44,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:11:44,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:11:44,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048279610] [2021-11-06 11:11:44,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:11:44,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:11:44,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:11:44,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:11:44,592 INFO L87 Difference]: Start difference. First operand 237 states and 285 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) [2021-11-06 11:11:45,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:11:45,055 INFO L93 Difference]: Finished difference Result 627 states and 755 transitions. [2021-11-06 11:11:45,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:11:45,059 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 [2021-11-06 11:11:45,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:11:45,061 INFO L225 Difference]: With dead ends: 627 [2021-11-06 11:11:45,061 INFO L226 Difference]: Without dead ends: 434 [2021-11-06 11:11:45,067 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:11:45,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-06 11:11:45,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 255. [2021-11-06 11:11:45,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 251 states have (on average 1.207171314741036) internal successors, (303), 254 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:45,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 303 transitions. [2021-11-06 11:11:45,098 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 303 transitions. Word has length 50 [2021-11-06 11:11:45,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:11:45,099 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 303 transitions. [2021-11-06 11:11:45,099 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) [2021-11-06 11:11:45,100 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 303 transitions. [2021-11-06 11:11:45,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-06 11:11:45,105 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:11:45,105 INFO L513 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] [2021-11-06 11:11:45,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 11:11:45,308 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 [2021-11-06 11:11:45,309 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:11:45,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:11:45,312 INFO L85 PathProgramCache]: Analyzing trace with hash -569476781, now seen corresponding path program 1 times [2021-11-06 11:11:45,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:11:45,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089178127] [2021-11-06 11:11:45,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:11:45,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:11:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:11:45,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:11:45,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:11:45,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089178127] [2021-11-06 11:11:45,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089178127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:11:45,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:11:45,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 11:11:45,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688283929] [2021-11-06 11:11:45,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 11:11:45,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:11:45,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 11:11:45,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-06 11:11:45,962 INFO L87 Difference]: Start difference. First operand 255 states and 303 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:51,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:11:51,363 INFO L93 Difference]: Finished difference Result 454 states and 538 transitions. [2021-11-06 11:11:51,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 11:11:51,365 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-11-06 11:11:51,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:11:51,366 INFO L225 Difference]: With dead ends: 454 [2021-11-06 11:11:51,366 INFO L226 Difference]: Without dead ends: 308 [2021-11-06 11:11:51,367 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-11-06 11:11:51,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-11-06 11:11:51,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 257. [2021-11-06 11:11:51,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 253 states have (on average 1.2055335968379446) internal successors, (305), 256 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:51,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 305 transitions. [2021-11-06 11:11:51,378 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 305 transitions. Word has length 54 [2021-11-06 11:11:51,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:11:51,379 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 305 transitions. [2021-11-06 11:11:51,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:51,379 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 305 transitions. [2021-11-06 11:11:51,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-06 11:11:51,381 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:11:51,381 INFO L513 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] [2021-11-06 11:11:51,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 11:11:51,381 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:11:51,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:11:51,382 INFO L85 PathProgramCache]: Analyzing trace with hash 132123093, now seen corresponding path program 1 times [2021-11-06 11:11:51,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:11:51,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116008894] [2021-11-06 11:11:51,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:11:51,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:11:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:11:51,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:11:51,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:11:51,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116008894] [2021-11-06 11:11:51,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116008894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:11:51,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:11:51,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:11:51,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147316955] [2021-11-06 11:11:51,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:11:51,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:11:51,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:11:51,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:11:51,675 INFO L87 Difference]: Start difference. First operand 257 states and 305 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:51,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:11:51,806 INFO L93 Difference]: Finished difference Result 406 states and 483 transitions. [2021-11-06 11:11:51,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:11:51,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-11-06 11:11:51,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:11:51,809 INFO L225 Difference]: With dead ends: 406 [2021-11-06 11:11:51,809 INFO L226 Difference]: Without dead ends: 255 [2021-11-06 11:11:51,810 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:11:51,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-06 11:11:51,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-11-06 11:11:51,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 251 states have (on average 1.1952191235059761) internal successors, (300), 254 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:51,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 300 transitions. [2021-11-06 11:11:51,820 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 300 transitions. Word has length 54 [2021-11-06 11:11:51,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:11:51,820 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 300 transitions. [2021-11-06 11:11:51,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:51,821 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 300 transitions. [2021-11-06 11:11:51,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-06 11:11:51,822 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:11:51,822 INFO L513 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] [2021-11-06 11:11:51,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 11:11:51,823 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:11:51,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:11:51,823 INFO L85 PathProgramCache]: Analyzing trace with hash 844082519, now seen corresponding path program 1 times [2021-11-06 11:11:51,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:11:51,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630627358] [2021-11-06 11:11:51,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:11:51,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:11:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:11:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:11:52,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:11:52,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630627358] [2021-11-06 11:11:52,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630627358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:11:52,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:11:52,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 11:11:52,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018931813] [2021-11-06 11:11:52,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 11:11:52,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:11:52,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 11:11:52,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-06 11:11:52,325 INFO L87 Difference]: Start difference. First operand 255 states and 300 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:57,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:11:57,626 INFO L93 Difference]: Finished difference Result 401 states and 469 transitions. [2021-11-06 11:11:57,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 11:11:57,627 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-06 11:11:57,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:11:57,628 INFO L225 Difference]: With dead ends: 401 [2021-11-06 11:11:57,628 INFO L226 Difference]: Without dead ends: 303 [2021-11-06 11:11:57,629 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-06 11:11:57,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-06 11:11:57,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 259. [2021-11-06 11:11:57,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 255 states have (on average 1.192156862745098) internal successors, (304), 258 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:57,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 304 transitions. [2021-11-06 11:11:57,643 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 304 transitions. Word has length 55 [2021-11-06 11:11:57,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:11:57,643 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 304 transitions. [2021-11-06 11:11:57,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:57,644 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 304 transitions. [2021-11-06 11:11:57,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-06 11:11:57,644 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:11:57,645 INFO L513 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] [2021-11-06 11:11:57,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 11:11:57,645 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:11:57,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:11:57,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1545682393, now seen corresponding path program 1 times [2021-11-06 11:11:57,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:11:57,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023568772] [2021-11-06 11:11:57,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:11:57,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:11:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:11:57,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:11:57,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:11:57,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023568772] [2021-11-06 11:11:57,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023568772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:11:57,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:11:57,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:11:57,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935493593] [2021-11-06 11:11:57,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:11:57,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:11:57,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:11:57,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:11:57,917 INFO L87 Difference]: Start difference. First operand 259 states and 304 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:58,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:11:58,058 INFO L93 Difference]: Finished difference Result 373 states and 438 transitions. [2021-11-06 11:11:58,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:11:58,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-06 11:11:58,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:11:58,060 INFO L225 Difference]: With dead ends: 373 [2021-11-06 11:11:58,061 INFO L226 Difference]: Without dead ends: 255 [2021-11-06 11:11:58,061 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:11:58,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-06 11:11:58,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-11-06 11:11:58,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 251 states have (on average 1.1713147410358566) internal successors, (294), 254 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:58,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 294 transitions. [2021-11-06 11:11:58,074 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 294 transitions. Word has length 55 [2021-11-06 11:11:58,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:11:58,075 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 294 transitions. [2021-11-06 11:11:58,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:11:58,076 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 294 transitions. [2021-11-06 11:11:58,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-06 11:11:58,076 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:11:58,076 INFO L513 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] [2021-11-06 11:11:58,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 11:11:58,077 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:11:58,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:11:58,077 INFO L85 PathProgramCache]: Analyzing trace with hash 209502350, now seen corresponding path program 1 times [2021-11-06 11:11:58,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:11:58,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850074122] [2021-11-06 11:11:58,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:11:58,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:11:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:11:58,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:11:58,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:11:58,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850074122] [2021-11-06 11:11:58,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850074122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:11:58,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:11:58,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:11:58,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351788898] [2021-11-06 11:11:58,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:11:58,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:11:58,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:11:58,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:11:58,451 INFO L87 Difference]: Start difference. First operand 255 states and 294 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:12:03,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:12:03,582 INFO L93 Difference]: Finished difference Result 439 states and 506 transitions. [2021-11-06 11:12:03,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 11:12:03,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-11-06 11:12:03,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:12:03,589 INFO L225 Difference]: With dead ends: 439 [2021-11-06 11:12:03,589 INFO L226 Difference]: Without dead ends: 258 [2021-11-06 11:12:03,590 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 11:12:03,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-11-06 11:12:03,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 255. [2021-11-06 11:12:03,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 251 states have (on average 1.1474103585657371) internal successors, (288), 254 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:12:03,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 288 transitions. [2021-11-06 11:12:03,605 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 288 transitions. Word has length 56 [2021-11-06 11:12:03,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:12:03,605 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 288 transitions. [2021-11-06 11:12:03,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:12:03,605 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 288 transitions. [2021-11-06 11:12:03,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-06 11:12:03,607 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:12:03,607 INFO L513 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] [2021-11-06 11:12:03,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 11:12:03,608 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:12:03,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:12:03,609 INFO L85 PathProgramCache]: Analyzing trace with hash -693818886, now seen corresponding path program 1 times [2021-11-06 11:12:03,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:12:03,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152475094] [2021-11-06 11:12:03,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:12:03,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:12:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:12:06,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:12:06,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:12:06,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152475094] [2021-11-06 11:12:06,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152475094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:12:06,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:12:06,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-06 11:12:06,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221213890] [2021-11-06 11:12:06,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-06 11:12:06,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:12:06,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-06 11:12:06,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-11-06 11:12:06,671 INFO L87 Difference]: Start difference. First operand 255 states and 288 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:12:34,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:12:34,703 INFO L93 Difference]: Finished difference Result 336 states and 378 transitions. [2021-11-06 11:12:34,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-06 11:12:34,708 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2021-11-06 11:12:34,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:12:34,711 INFO L225 Difference]: With dead ends: 336 [2021-11-06 11:12:34,711 INFO L226 Difference]: Without dead ends: 327 [2021-11-06 11:12:34,712 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=218, Invalid=972, Unknown=0, NotChecked=0, Total=1190 [2021-11-06 11:12:34,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-11-06 11:12:34,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 275. [2021-11-06 11:12:34,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 271 states have (on average 1.151291512915129) internal successors, (312), 274 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:12:34,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 312 transitions. [2021-11-06 11:12:34,728 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 312 transitions. Word has length 57 [2021-11-06 11:12:34,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:12:34,729 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 312 transitions. [2021-11-06 11:12:34,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:12:34,729 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 312 transitions. [2021-11-06 11:12:34,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-06 11:12:34,730 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:12:34,730 INFO L513 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] [2021-11-06 11:12:34,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 11:12:34,731 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:12:34,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:12:34,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1205998898, now seen corresponding path program 1 times [2021-11-06 11:12:34,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:12:34,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034194879] [2021-11-06 11:12:34,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:12:34,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:12:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:12:35,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:12:35,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:12:35,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034194879] [2021-11-06 11:12:35,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034194879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:12:35,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:12:35,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 11:12:35,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619762473] [2021-11-06 11:12:35,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 11:12:35,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:12:35,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 11:12:35,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-06 11:12:35,689 INFO L87 Difference]: Start difference. First operand 275 states and 312 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:12:44,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:12:44,335 INFO L93 Difference]: Finished difference Result 354 states and 396 transitions. [2021-11-06 11:12:44,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-06 11:12:44,336 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-11-06 11:12:44,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:12:44,338 INFO L225 Difference]: With dead ends: 354 [2021-11-06 11:12:44,338 INFO L226 Difference]: Without dead ends: 345 [2021-11-06 11:12:44,338 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2021-11-06 11:12:44,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-06 11:12:44,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 323. [2021-11-06 11:12:44,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 319 states have (on average 1.1598746081504703) internal successors, (370), 322 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:12:44,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 370 transitions. [2021-11-06 11:12:44,355 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 370 transitions. Word has length 58 [2021-11-06 11:12:44,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:12:44,357 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 370 transitions. [2021-11-06 11:12:44,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:12:44,357 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 370 transitions. [2021-11-06 11:12:44,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-06 11:12:44,358 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:12:44,358 INFO L513 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] [2021-11-06 11:12:44,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 11:12:44,359 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:12:44,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:12:44,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1380900098, now seen corresponding path program 1 times [2021-11-06 11:12:44,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:12:44,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485790442] [2021-11-06 11:12:44,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:12:44,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:12:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:12:45,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:12:45,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:12:45,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485790442] [2021-11-06 11:12:45,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485790442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:12:45,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:12:45,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:12:45,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428755059] [2021-11-06 11:12:45,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:12:45,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:12:45,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:12:45,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:12:45,214 INFO L87 Difference]: Start difference. First operand 323 states and 370 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:12:45,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:12:45,486 INFO L93 Difference]: Finished difference Result 610 states and 695 transitions. [2021-11-06 11:12:45,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:12:45,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-11-06 11:12:45,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:12:45,488 INFO L225 Difference]: With dead ends: 610 [2021-11-06 11:12:45,488 INFO L226 Difference]: Without dead ends: 323 [2021-11-06 11:12:45,489 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:12:45,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-11-06 11:12:45,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 314. [2021-11-06 11:12:45,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 310 states have (on average 1.1161290322580646) internal successors, (346), 313 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:12:45,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 346 transitions. [2021-11-06 11:12:45,503 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 346 transitions. Word has length 60 [2021-11-06 11:12:45,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:12:45,503 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 346 transitions. [2021-11-06 11:12:45,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:12:45,503 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 346 transitions. [2021-11-06 11:12:45,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-06 11:12:45,504 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:12:45,504 INFO L513 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] [2021-11-06 11:12:45,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 11:12:45,505 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:12:45,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:12:45,505 INFO L85 PathProgramCache]: Analyzing trace with hash 778166894, now seen corresponding path program 1 times [2021-11-06 11:12:45,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:12:45,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793626531] [2021-11-06 11:12:45,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:12:45,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:12:45,574 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:12:45,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499285953] [2021-11-06 11:12:45,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:12:45,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:12:45,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:12:45,580 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) [2021-11-06 11:12:45,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 11:12:48,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:12:48,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 2717 conjuncts, 156 conjunts are in the unsatisfiable core [2021-11-06 11:12:48,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:12:48,823 INFO L354 Elim1Store]: treesize reduction 117, result has 12.0 percent of original size [2021-11-06 11:12:48,824 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 8 case distinctions, treesize of input 55 treesize of output 54 [2021-11-06 11:12:51,235 INFO L354 Elim1Store]: treesize reduction 368, result has 14.6 percent of original size [2021-11-06 11:12:51,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 80 treesize of output 121 [2021-11-06 11:12:54,021 INFO L354 Elim1Store]: treesize reduction 274, result has 11.6 percent of original size [2021-11-06 11:12:54,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 83 treesize of output 101 [2021-11-06 11:12:56,632 INFO L354 Elim1Store]: treesize reduction 224, result has 13.5 percent of original size [2021-11-06 11:12:56,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 24 case distinctions, treesize of input 90 treesize of output 109 [2021-11-06 11:12:59,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:12:59,377 INFO L354 Elim1Store]: treesize reduction 188, result has 27.4 percent of original size [2021-11-06 11:12:59,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 24 case distinctions, treesize of input 74 treesize of output 134 [2021-11-06 11:13:01,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 143 [2021-11-06 11:13:02,112 INFO L354 Elim1Store]: treesize reduction 346, result has 12.2 percent of original size [2021-11-06 11:13:02,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 34 case distinctions, treesize of input 156 treesize of output 182 [2021-11-06 11:13:38,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:13:39,407 INFO L354 Elim1Store]: treesize reduction 852, result has 14.7 percent of original size [2021-11-06 11:13:39,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 4 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 65 case distinctions, treesize of input 164 treesize of output 277 [2021-11-06 11:14:01,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 159 [2021-11-06 11:14:34,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:14:34,665 INFO L354 Elim1Store]: treesize reduction 678, result has 8.1 percent of original size [2021-11-06 11:14:34,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 8 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 70 case distinctions, treesize of input 203 treesize of output 233 [2021-11-06 11:14:56,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 159 [2021-11-06 11:15:32,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:15:33,055 INFO L354 Elim1Store]: treesize reduction 536, result has 17.7 percent of original size [2021-11-06 11:15:33,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 5 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 61 case distinctions, treesize of input 210 treesize of output 297 [2021-11-06 11:16:29,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:16:29,751 INFO L354 Elim1Store]: treesize reduction 548, result has 17.8 percent of original size [2021-11-06 11:16:29,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 3 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 63 case distinctions, treesize of input 185 treesize of output 276 [2021-11-06 11:16:50,238 INFO L354 Elim1Store]: treesize reduction 124, result has 19.0 percent of original size [2021-11-06 11:16:50,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 277 treesize of output 215 [2021-11-06 11:16:50,995 INFO L354 Elim1Store]: treesize reduction 400, result has 30.2 percent of original size [2021-11-06 11:16:50,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 238 treesize of output 382 [2021-11-06 11:16:51,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 34 [2021-11-06 11:16:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:16:52,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:16:52,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793626531] [2021-11-06 11:16:52,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:16:52,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499285953] [2021-11-06 11:16:52,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499285953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:16:52,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:16:52,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-06 11:16:52,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961922650] [2021-11-06 11:16:52,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-06 11:16:52,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:16:52,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-06 11:16:52,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=404, Unknown=2, NotChecked=0, Total=462 [2021-11-06 11:16:52,407 INFO L87 Difference]: Start difference. First operand 314 states and 346 transitions. Second operand has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:17:55,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:17:55,023 INFO L93 Difference]: Finished difference Result 364 states and 398 transitions. [2021-11-06 11:17:55,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-06 11:17:55,024 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-11-06 11:17:55,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:17:55,025 INFO L225 Difference]: With dead ends: 364 [2021-11-06 11:17:55,025 INFO L226 Difference]: Without dead ends: 355 [2021-11-06 11:17:55,026 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 40.4s TimeCoverageRelationStatistics Valid=167, Invalid=1160, Unknown=5, NotChecked=0, Total=1332 [2021-11-06 11:17:55,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2021-11-06 11:17:55,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 300. [2021-11-06 11:17:55,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 296 states have (on average 1.114864864864865) internal successors, (330), 299 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:17:55,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 330 transitions. [2021-11-06 11:17:55,046 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 330 transitions. Word has length 63 [2021-11-06 11:17:55,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:17:55,046 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 330 transitions. [2021-11-06 11:17:55,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:17:55,046 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 330 transitions. [2021-11-06 11:17:55,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-06 11:17:55,047 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:17:55,047 INFO L513 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] [2021-11-06 11:17:55,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-06 11:17:55,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-06 11:17:55,272 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:17:55,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:17:55,272 INFO L85 PathProgramCache]: Analyzing trace with hash -135931354, now seen corresponding path program 1 times [2021-11-06 11:17:55,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:17:55,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636474925] [2021-11-06 11:17:55,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:17:55,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:17:55,339 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:17:55,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315899813] [2021-11-06 11:17:55,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:17:55,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:17:55,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:17:55,341 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) [2021-11-06 11:17:55,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 11:17:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:17:58,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 2719 conjuncts, 120 conjunts are in the unsatisfiable core [2021-11-06 11:17:58,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:17:58,511 INFO L354 Elim1Store]: treesize reduction 93, result has 14.7 percent of original size [2021-11-06 11:17:58,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 32 [2021-11-06 11:17:59,567 INFO L354 Elim1Store]: treesize reduction 287, result has 14.8 percent of original size [2021-11-06 11:17:59,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 22 case distinctions, treesize of input 63 treesize of output 93 [2021-11-06 11:18:00,754 INFO L354 Elim1Store]: treesize reduction 212, result has 12.8 percent of original size [2021-11-06 11:18:00,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 58 treesize of output 73 [2021-11-06 11:18:01,724 INFO L354 Elim1Store]: treesize reduction 170, result has 15.0 percent of original size [2021-11-06 11:18:01,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 65 treesize of output 81 [2021-11-06 11:18:02,932 INFO L354 Elim1Store]: treesize reduction 148, result has 32.4 percent of original size [2021-11-06 11:18:02,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 53 treesize of output 110 [2021-11-06 11:18:04,227 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 121 treesize of output 117 [2021-11-06 11:18:04,417 INFO L354 Elim1Store]: treesize reduction 280, result has 13.3 percent of original size [2021-11-06 11:18:04,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 126 treesize of output 149 [2021-11-06 11:18:27,110 INFO L354 Elim1Store]: treesize reduction 224, result has 30.2 percent of original size [2021-11-06 11:18:27,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 122 treesize of output 196 [2021-11-06 11:18:27,528 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-06 11:18:27,528 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 1 case distinctions, treesize of input 36 treesize of output 24 [2021-11-06 11:18:27,894 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-06 11:18:27,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 20 [2021-11-06 11:18:28,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-06 11:18:28,691 INFO L354 Elim1Store]: treesize reduction 100, result has 27.0 percent of original size [2021-11-06 11:18:28,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 101 treesize of output 75 [2021-11-06 11:18:28,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 15 treesize of output 11 [2021-11-06 11:18:29,180 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-11-06 11:18:29,181 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 41 [2021-11-06 11:18:39,892 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-11-06 11:18:39,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 79 treesize of output 63 [2021-11-06 11:18:40,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:18:40,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:18:40,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636474925] [2021-11-06 11:18:40,209 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:18:40,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315899813] [2021-11-06 11:18:40,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315899813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:18:40,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:18:40,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-06 11:18:40,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642252367] [2021-11-06 11:18:40,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-06 11:18:40,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:18:40,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-06 11:18:40,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=288, Unknown=3, NotChecked=0, Total=342 [2021-11-06 11:18:40,212 INFO L87 Difference]: Start difference. First operand 300 states and 330 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:19:43,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:19:43,738 INFO L93 Difference]: Finished difference Result 334 states and 363 transitions. [2021-11-06 11:19:43,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-06 11:19:43,739 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-06 11:19:43,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:19:43,740 INFO L225 Difference]: With dead ends: 334 [2021-11-06 11:19:43,740 INFO L226 Difference]: Without dead ends: 325 [2021-11-06 11:19:43,741 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=146, Invalid=778, Unknown=6, NotChecked=0, Total=930 [2021-11-06 11:19:43,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-06 11:19:43,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 286. [2021-11-06 11:19:43,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 282 states have (on average 1.1134751773049645) internal successors, (314), 285 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:19:43,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 314 transitions. [2021-11-06 11:19:43,764 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 314 transitions. Word has length 64 [2021-11-06 11:19:43,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:19:43,764 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 314 transitions. [2021-11-06 11:19:43,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:19:43,765 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 314 transitions. [2021-11-06 11:19:43,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-06 11:19:43,765 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:19:43,765 INFO L513 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] [2021-11-06 11:19:43,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 11:19:43,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:19:43,980 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 11:19:43,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:19:43,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1693179918, now seen corresponding path program 1 times [2021-11-06 11:19:43,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:19:43,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578644480] [2021-11-06 11:19:43,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:19:43,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:19:44,042 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:19:44,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287869064] [2021-11-06 11:19:44,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:19:44,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:19:44,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:19:44,044 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) [2021-11-06 11:19:44,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process Killed by 15