./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_length_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 53c422310795c2e7f5b0f72e5a73eee871aa1645d7b73c98001e28d2bf239333 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 12:00:51,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 12:00:51,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 12:00:51,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 12:00:51,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 12:00:51,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 12:00:51,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 12:00:51,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 12:00:51,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 12:00:51,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 12:00:51,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 12:00:51,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 12:00:51,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 12:00:51,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 12:00:51,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 12:00:51,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 12:00:51,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 12:00:51,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 12:00:51,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 12:00:51,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 12:00:51,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 12:00:51,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 12:00:51,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 12:00:51,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 12:00:51,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 12:00:51,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 12:00:51,989 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 12:00:51,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 12:00:51,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 12:00:51,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 12:00:51,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 12:00:51,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 12:00:51,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 12:00:51,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 12:00:51,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 12:00:51,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 12:00:51,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 12:00:51,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 12:00:51,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 12:00:51,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 12:00:51,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 12:00:51,995 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 12:00:52,022 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 12:00:52,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 12:00:52,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 12:00:52,024 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 12:00:52,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 12:00:52,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 12:00:52,026 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 12:00:52,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 12:00:52,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 12:00:52,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 12:00:52,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 12:00:52,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 12:00:52,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 12:00:52,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 12:00:52,028 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 12:00:52,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 12:00:52,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 12:00:52,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 12:00:52,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 12:00:52,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:00:52,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 12:00:52,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 12:00:52,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 12:00:52,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 12:00:52,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 12:00:52,029 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 12:00:52,029 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 12:00:52,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 12:00:52,030 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 12:00:52,030 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53c422310795c2e7f5b0f72e5a73eee871aa1645d7b73c98001e28d2bf239333 [2021-11-05 12:00:52,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 12:00:52,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 12:00:52,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 12:00:52,342 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 12:00:52,345 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 12:00:52,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i [2021-11-05 12:00:52,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22843c958/e8cc8d401bf648ed85dd4cfa64343928/FLAG13b284dea [2021-11-05 12:00:53,189 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 12:00:53,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i [2021-11-05 12:00:53,224 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22843c958/e8cc8d401bf648ed85dd4cfa64343928/FLAG13b284dea [2021-11-05 12:00:53,364 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22843c958/e8cc8d401bf648ed85dd4cfa64343928 [2021-11-05 12:00:53,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 12:00:53,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 12:00:53,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 12:00:53,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 12:00:53,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 12:00:53,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:00:53" (1/1) ... [2021-11-05 12:00:53,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@419563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:53, skipping insertion in model container [2021-11-05 12:00:53,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:00:53" (1/1) ... [2021-11-05 12:00:53,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 12:00:53,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 12:00:53,692 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_array_list_length_harness.i[4495,4508] [2021-11-05 12:00:53,700 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_array_list_length_harness.i[4555,4568] [2021-11-05 12:00:53,718 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:00:53,721 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:00:54,149 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:00:54,215 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,219 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,219 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,220 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,222 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,237 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,238 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,239 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,241 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,242 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,243 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,244 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,246 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,449 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:00:54,450 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:00:54,451 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:00:54,451 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:00:54,452 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:00:54,453 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:00:54,453 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:00:54,454 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:00:54,454 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:00:54,467 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:00:54,542 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,546 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:00:54,592 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 12:00:54,600 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_array_list_length_harness.i[4495,4508] [2021-11-05 12:00:54,601 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_array_list_length_harness.i[4555,4568] [2021-11-05 12:00:54,602 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:00:54,603 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:00:54,631 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:00:54,645 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,656 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,657 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,657 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,658 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,664 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,669 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,670 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,671 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,671 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,672 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,675 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,675 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,731 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:00:54,732 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:00:54,732 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:00:54,733 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:00:54,735 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:00:54,736 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:00:54,736 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:00:54,737 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:00:54,737 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:00:54,738 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:00:54,763 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,772 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:00:54,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:00:54,951 INFO L208 MainTranslator]: Completed translation [2021-11-05 12:00:54,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:54 WrapperNode [2021-11-05 12:00:54,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 12:00:54,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 12:00:54,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 12:00:54,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 12:00:54,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:54" (1/1) ... [2021-11-05 12:00:55,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:54" (1/1) ... [2021-11-05 12:00:55,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 12:00:55,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 12:00:55,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 12:00:55,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 12:00:55,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:54" (1/1) ... [2021-11-05 12:00:55,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:54" (1/1) ... [2021-11-05 12:00:55,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:54" (1/1) ... [2021-11-05 12:00:55,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:54" (1/1) ... [2021-11-05 12:00:55,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:54" (1/1) ... [2021-11-05 12:00:55,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:54" (1/1) ... [2021-11-05 12:00:55,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:54" (1/1) ... [2021-11-05 12:00:55,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 12:00:55,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 12:00:55,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 12:00:55,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 12:00:55,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:54" (1/1) ... [2021-11-05 12:00:55,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:00:55,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:00:55,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 12:00:55,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 12:00:55,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 12:00:55,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 12:00:55,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 12:00:55,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 12:00:55,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 12:00:55,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 12:00:55,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 12:00:55,350 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-05 12:00:55,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 12:00:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 12:00:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 12:00:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 12:01:02,683 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 12:01:02,684 INFO L299 CfgBuilder]: Removed 106 assume(true) statements. [2021-11-05 12:01:02,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:01:02 BoogieIcfgContainer [2021-11-05 12:01:02,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 12:01:02,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 12:01:02,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 12:01:02,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 12:01:02,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 12:00:53" (1/3) ... [2021-11-05 12:01:02,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e60851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:01:02, skipping insertion in model container [2021-11-05 12:01:02,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:00:54" (2/3) ... [2021-11-05 12:01:02,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e60851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:01:02, skipping insertion in model container [2021-11-05 12:01:02,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:01:02" (3/3) ... [2021-11-05 12:01:02,693 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_length_harness.i [2021-11-05 12:01:02,697 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 12:01:02,697 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-05 12:01:02,740 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 12:01:02,748 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 12:01:02,748 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-05 12:01:02,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 120 states have (on average 1.425) internal successors, (171), 128 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:02,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-05 12:01:02,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:01:02,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:01:02,769 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 12:01:02,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:01:02,773 INFO L85 PathProgramCache]: Analyzing trace with hash -478978032, now seen corresponding path program 1 times [2021-11-05 12:01:02,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:01:02,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540912830] [2021-11-05 12:01:02,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:02,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:01:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:01:03,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:01:03,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:01:03,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540912830] [2021-11-05 12:01:03,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540912830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:01:03,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:01:03,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 12:01:03,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57915742] [2021-11-05 12:01:03,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:01:03,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 12:01:03,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:01:03,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 12:01:03,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 12:01:03,378 INFO L87 Difference]: Start difference. First operand has 129 states, 120 states have (on average 1.425) internal successors, (171), 128 states have internal predecessors, (171), 0 states have call successors, (0), 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 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:03,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:01:03,421 INFO L93 Difference]: Finished difference Result 254 states and 337 transitions. [2021-11-05 12:01:03,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 12:01:03,424 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-11-05 12:01:03,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:01:03,434 INFO L225 Difference]: With dead ends: 254 [2021-11-05 12:01:03,435 INFO L226 Difference]: Without dead ends: 122 [2021-11-05 12:01:03,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.05ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 12:01:03,445 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.28ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 12:01:03,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 5.28ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 12:01:03,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-05 12:01:03,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-11-05 12:01:03,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 114 states have (on average 1.280701754385965) internal successors, (146), 121 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:03,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 146 transitions. [2021-11-05 12:01:03,497 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 146 transitions. Word has length 29 [2021-11-05 12:01:03,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:01:03,497 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 146 transitions. [2021-11-05 12:01:03,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:03,504 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 146 transitions. [2021-11-05 12:01:03,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-05 12:01:03,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:01:03,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:01:03,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 12:01:03,507 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 12:01:03,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:01:03,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1554920762, now seen corresponding path program 1 times [2021-11-05 12:01:03,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:01:03,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292901213] [2021-11-05 12:01:03,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:03,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:01:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:01:03,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:01:03,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:01:03,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292901213] [2021-11-05 12:01:03,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292901213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:01:03,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:01:03,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 12:01:03,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357074625] [2021-11-05 12:01:03,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:01:03,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 12:01:03,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:01:03,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 12:01:03,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 12:01:03,766 INFO L87 Difference]: Start difference. First operand 122 states and 146 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:03,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:01:03,827 INFO L93 Difference]: Finished difference Result 231 states and 277 transitions. [2021-11-05 12:01:03,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 12:01:03,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-11-05 12:01:03,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:01:03,834 INFO L225 Difference]: With dead ends: 231 [2021-11-05 12:01:03,834 INFO L226 Difference]: Without dead ends: 123 [2021-11-05 12:01:03,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.60ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 12:01:03,835 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 0 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.59ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.72ms IncrementalHoareTripleChecker+Time [2021-11-05 12:01:03,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 286 Invalid, 5 Unknown, 0 Unchecked, 2.59ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 49.72ms Time] [2021-11-05 12:01:03,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-05 12:01:03,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-11-05 12:01:03,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 115 states have (on average 1.2782608695652173) internal successors, (147), 122 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:03,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 147 transitions. [2021-11-05 12:01:03,845 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 147 transitions. Word has length 29 [2021-11-05 12:01:03,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:01:03,845 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 147 transitions. [2021-11-05 12:01:03,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:03,846 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 147 transitions. [2021-11-05 12:01:03,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-05 12:01:03,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:01:03,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:01:03,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 12:01:03,847 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 12:01:03,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:01:03,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1420907256, now seen corresponding path program 1 times [2021-11-05 12:01:03,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:01:03,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133641736] [2021-11-05 12:01:03,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:03,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:01:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:01:04,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:01:04,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:01:04,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133641736] [2021-11-05 12:01:04,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133641736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:01:04,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:01:04,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:01:04,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295367854] [2021-11-05 12:01:04,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:01:04,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:01:04,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:01:04,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:01:04,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:01:04,149 INFO L87 Difference]: Start difference. First operand 123 states and 147 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:04,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:01:04,403 INFO L93 Difference]: Finished difference Result 214 states and 254 transitions. [2021-11-05 12:01:04,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:01:04,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-11-05 12:01:04,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:01:04,406 INFO L225 Difference]: With dead ends: 214 [2021-11-05 12:01:04,406 INFO L226 Difference]: Without dead ends: 123 [2021-11-05 12:01:04,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 82.87ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:01:04,407 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 211 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 141.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.00ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 184.59ms IncrementalHoareTripleChecker+Time [2021-11-05 12:01:04,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 175 Invalid, 37 Unknown, 0 Unchecked, 3.00ms Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 184.59ms Time] [2021-11-05 12:01:04,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-05 12:01:04,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-11-05 12:01:04,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 115 states have (on average 1.2608695652173914) internal successors, (145), 122 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:04,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 145 transitions. [2021-11-05 12:01:04,413 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 145 transitions. Word has length 29 [2021-11-05 12:01:04,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:01:04,413 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 145 transitions. [2021-11-05 12:01:04,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:04,413 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 145 transitions. [2021-11-05 12:01:04,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-05 12:01:04,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:01:04,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:01:04,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 12:01:04,415 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 12:01:04,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:01:04,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1590978580, now seen corresponding path program 1 times [2021-11-05 12:01:04,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:01:04,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298246503] [2021-11-05 12:01:04,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:04,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:01:04,494 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:01:04,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2025913676] [2021-11-05 12:01:04,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:04,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:01:04,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:01:04,496 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 12:01:04,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 12:01:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:01:05,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 2403 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 12:01:05,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:01:05,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:01:05,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:01:05,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:01:05,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298246503] [2021-11-05 12:01:05,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:01:05,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025913676] [2021-11-05 12:01:05,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025913676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:01:05,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:01:05,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:01:05,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773625993] [2021-11-05 12:01:05,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:01:05,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:01:05,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:01:05,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:01:05,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:01:05,914 INFO L87 Difference]: Start difference. First operand 123 states and 145 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:06,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:01:06,237 INFO L93 Difference]: Finished difference Result 189 states and 219 transitions. [2021-11-05 12:01:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:01:06,237 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-11-05 12:01:06,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:01:06,238 INFO L225 Difference]: With dead ends: 189 [2021-11-05 12:01:06,238 INFO L226 Difference]: Without dead ends: 123 [2021-11-05 12:01:06,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 279.84ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:01:06,240 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 460 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 178.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.99ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 198.72ms IncrementalHoareTripleChecker+Time [2021-11-05 12:01:06,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 160 Invalid, 62 Unknown, 0 Unchecked, 2.99ms Time], IncrementalHoareTripleChecker [13 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 198.72ms Time] [2021-11-05 12:01:06,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-05 12:01:06,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-11-05 12:01:06,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 115 states have (on average 1.2434782608695651) internal successors, (143), 122 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:06,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2021-11-05 12:01:06,257 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 37 [2021-11-05 12:01:06,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:01:06,257 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2021-11-05 12:01:06,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:06,257 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2021-11-05 12:01:06,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 12:01:06,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:01:06,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:01:06,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 12:01:06,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:01:06,459 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 12:01:06,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:01:06,460 INFO L85 PathProgramCache]: Analyzing trace with hash -62529738, now seen corresponding path program 1 times [2021-11-05 12:01:06,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:01:06,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372155942] [2021-11-05 12:01:06,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:06,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:01:06,524 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:01:06,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [516228329] [2021-11-05 12:01:06,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:06,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:01:06,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:01:06,540 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 12:01:06,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 12:01:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:01:07,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 2588 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 12:01:07,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:01:07,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:01:07,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:01:07,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:01:07,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372155942] [2021-11-05 12:01:07,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:01:07,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516228329] [2021-11-05 12:01:07,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516228329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:01:07,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:01:07,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:01:07,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123183959] [2021-11-05 12:01:07,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:01:07,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:01:07,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:01:07,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:01:07,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:01:07,372 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:07,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:01:07,606 INFO L93 Difference]: Finished difference Result 235 states and 276 transitions. [2021-11-05 12:01:07,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:01:07,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-05 12:01:07,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:01:07,608 INFO L225 Difference]: With dead ends: 235 [2021-11-05 12:01:07,608 INFO L226 Difference]: Without dead ends: 143 [2021-11-05 12:01:07,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.35ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:01:07,609 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 31 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 180.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.22ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 197.66ms IncrementalHoareTripleChecker+Time [2021-11-05 12:01:07,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 381 Invalid, 72 Unknown, 0 Unchecked, 2.22ms Time], IncrementalHoareTripleChecker [13 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 197.66ms Time] [2021-11-05 12:01:07,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-05 12:01:07,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 131. [2021-11-05 12:01:07,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 123 states have (on average 1.2276422764227641) internal successors, (151), 130 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:07,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 151 transitions. [2021-11-05 12:01:07,616 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 151 transitions. Word has length 53 [2021-11-05 12:01:07,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:01:07,616 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 151 transitions. [2021-11-05 12:01:07,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:07,616 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 151 transitions. [2021-11-05 12:01:07,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 12:01:07,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:01:07,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:01:07,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 12:01:07,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:01:07,836 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 12:01:07,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:01:07,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1837537100, now seen corresponding path program 1 times [2021-11-05 12:01:07,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:01:07,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749023953] [2021-11-05 12:01:07,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:07,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:01:07,942 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:01:07,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797878314] [2021-11-05 12:01:07,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:07,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:01:07,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:01:07,945 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 12:01:07,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 12:08:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:08:40,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 2593 conjuncts, 232 conjunts are in the unsatisfiable core [2021-11-05 12:08:40,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:08:41,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 12:08:41,511 INFO L354 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2021-11-05 12:08:41,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 33 [2021-11-05 12:08:41,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:08:41,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 28 [2021-11-05 12:08:43,298 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-11-05 12:08:43,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 176 treesize of output 183 [2021-11-05 12:08:50,511 INFO L354 Elim1Store]: treesize reduction 126, result has 27.2 percent of original size [2021-11-05 12:08:50,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 110 [2021-11-05 12:09:43,185 INFO L354 Elim1Store]: treesize reduction 76, result has 37.2 percent of original size [2021-11-05 12:09:43,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 97 treesize of output 129 [2021-11-05 12:09:44,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:09:44,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:09:44,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:09:44,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 12:09:44,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:09:44,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 12:09:44,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:09:44,335 INFO L354 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2021-11-05 12:09:44,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 85 treesize of output 73 [2021-11-05 12:09:49,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:09:49,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:09:49,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:09:49,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 12:09:49,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:09:49,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 12:09:49,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:09:50,039 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-05 12:09:50,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 81 treesize of output 83 [2021-11-05 12:09:55,852 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-05 12:09:55,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 132 treesize of output 76 [2021-11-05 12:09:56,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:09:56,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:09:56,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:09:56,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749023953] [2021-11-05 12:09:56,556 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:09:56,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797878314] [2021-11-05 12:09:56,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797878314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:09:56,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:09:56,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-11-05 12:09:56,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004113541] [2021-11-05 12:09:56,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:09:56,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-05 12:09:56,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:09:56,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-05 12:09:56,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=772, Unknown=4, NotChecked=0, Total=870 [2021-11-05 12:09:56,557 INFO L87 Difference]: Start difference. First operand 131 states and 151 transitions. Second operand has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 30 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:09:58,607 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:09:58,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:09:58,961 INFO L93 Difference]: Finished difference Result 198 states and 232 transitions. [2021-11-05 12:09:58,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-05 12:09:58,962 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 30 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-05 12:09:58,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:09:58,964 INFO L225 Difference]: With dead ends: 198 [2021-11-05 12:09:58,964 INFO L226 Difference]: Without dead ends: 196 [2021-11-05 12:09:58,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 17983.44ms TimeCoverageRelationStatistics Valid=98, Invalid=828, Unknown=4, NotChecked=0, Total=930 [2021-11-05 12:09:58,965 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 72 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2204.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.97ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 339 IncrementalHoareTripleChecker+Unchecked, 2301.83ms IncrementalHoareTripleChecker+Time [2021-11-05 12:09:58,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 1255 Invalid, 389 Unknown, 0 Unchecked, 3.97ms Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 1 Unknown, 339 Unchecked, 2301.83ms Time] [2021-11-05 12:09:58,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-05 12:09:58,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 171. [2021-11-05 12:09:58,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 163 states have (on average 1.2331288343558282) internal successors, (201), 170 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:09:58,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 201 transitions. [2021-11-05 12:09:58,975 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 201 transitions. Word has length 53 [2021-11-05 12:09:58,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:09:58,976 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 201 transitions. [2021-11-05 12:09:58,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 30 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:09:58,976 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 201 transitions. [2021-11-05 12:09:58,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 12:09:58,977 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:09:58,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:09:59,195 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forcibly destroying the process [2021-11-05 12:09:59,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 137 [2021-11-05 12:09:59,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:09:59,246 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 12:09:59,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:09:59,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1947957106, now seen corresponding path program 1 times [2021-11-05 12:09:59,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:09:59,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363722951] [2021-11-05 12:09:59,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:09:59,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:09:59,352 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:09:59,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [571599590] [2021-11-05 12:09:59,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:09:59,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:09:59,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:09:59,355 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 12:09:59,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 12:10:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:10:00,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 2598 conjuncts, 67 conjunts are in the unsatisfiable core [2021-11-05 12:10:00,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:10:00,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-05 12:10:00,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-05 12:10:01,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 12:10:01,461 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 12:10:01,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 47 [2021-11-05 12:10:01,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 12:10:01,474 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 12:10:01,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 20 [2021-11-05 12:10:01,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:10:01,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:10:01,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:10:01,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363722951] [2021-11-05 12:10:01,717 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:10:01,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571599590] [2021-11-05 12:10:01,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571599590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:10:01,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:10:01,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-05 12:10:01,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031934874] [2021-11-05 12:10:01,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:10:01,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 12:10:01,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:10:01,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 12:10:01,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:10:01,720 INFO L87 Difference]: Start difference. First operand 171 states and 201 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:10:03,762 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:10:05,889 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:10:08,011 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:10:10,110 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:10:18,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:10:18,392 INFO L93 Difference]: Finished difference Result 555 states and 637 transitions. [2021-11-05 12:10:18,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-05 12:10:18,393 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-05 12:10:18,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:10:18,395 INFO L225 Difference]: With dead ends: 555 [2021-11-05 12:10:18,396 INFO L226 Difference]: Without dead ends: 451 [2021-11-05 12:10:18,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 5406.51ms TimeCoverageRelationStatistics Valid=477, Invalid=1973, Unknown=0, NotChecked=0, Total=2450 [2021-11-05 12:10:18,398 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 580 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 58 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11175.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.71ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11902.36ms IncrementalHoareTripleChecker+Time [2021-11-05 12:10:18,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 1985 Invalid, 1138 Unknown, 0 Unchecked, 20.71ms Time], IncrementalHoareTripleChecker [58 Valid, 1076 Invalid, 4 Unknown, 0 Unchecked, 11902.36ms Time] [2021-11-05 12:10:18,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-11-05 12:10:18,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 255. [2021-11-05 12:10:18,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 247 states have (on average 1.222672064777328) internal successors, (302), 254 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:10:18,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 302 transitions. [2021-11-05 12:10:18,418 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 302 transitions. Word has length 53 [2021-11-05 12:10:18,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:10:18,418 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 302 transitions. [2021-11-05 12:10:18,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:10:18,418 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 302 transitions. [2021-11-05 12:10:18,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-05 12:10:18,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:10:18,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:10:18,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-05 12:10:18,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:10:18,635 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 12:10:18,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:10:18,636 INFO L85 PathProgramCache]: Analyzing trace with hash 756813272, now seen corresponding path program 1 times [2021-11-05 12:10:18,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:10:18,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831340854] [2021-11-05 12:10:18,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:10:18,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:10:18,713 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:10:18,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [218667247] [2021-11-05 12:10:18,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:10:18,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:10:18,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:10:18,714 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 12:10:18,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-05 12:14:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-05 12:14:42,396 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. Killed by 15