./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6f838ff631dd7d907eee223e4bc065b6ce71a3dd1969d0a88cef9ccdcf3b54d1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 10:01:14,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 10:01:14,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 10:01:14,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 10:01:14,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 10:01:14,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 10:01:14,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 10:01:14,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 10:01:14,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 10:01:14,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 10:01:14,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 10:01:14,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 10:01:14,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 10:01:14,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 10:01:14,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 10:01:14,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 10:01:14,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 10:01:14,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 10:01:14,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 10:01:14,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 10:01:14,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 10:01:14,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 10:01:14,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 10:01:14,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 10:01:14,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 10:01:14,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 10:01:14,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 10:01:14,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 10:01:14,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 10:01:14,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 10:01:14,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 10:01:14,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 10:01:14,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 10:01:14,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 10:01:14,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 10:01:14,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 10:01:14,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 10:01:14,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 10:01:14,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 10:01:14,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 10:01:14,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 10:01:14,158 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 10:01:14,180 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 10:01:14,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 10:01:14,182 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 10:01:14,182 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 10:01:14,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 10:01:14,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 10:01:14,183 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 10:01:14,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 10:01:14,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 10:01:14,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 10:01:14,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 10:01:14,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 10:01:14,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 10:01:14,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 10:01:14,185 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 10:01:14,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 10:01:14,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 10:01:14,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 10:01:14,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 10:01:14,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 10:01:14,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 10:01:14,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 10:01:14,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 10:01:14,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 10:01:14,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 10:01:14,186 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 10:01:14,186 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 10:01:14,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 10:01:14,187 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 10:01:14,187 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f838ff631dd7d907eee223e4bc065b6ce71a3dd1969d0a88cef9ccdcf3b54d1 [2021-11-06 10:01:14,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 10:01:14,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 10:01:14,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 10:01:14,404 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 10:01:14,405 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 10:01:14,405 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i [2021-11-06 10:01:14,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c927bf185/8144f843fa5e406883566e063c473e9a/FLAGccada4316 [2021-11-06 10:01:14,919 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 10:01:14,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i [2021-11-06 10:01:14,944 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c927bf185/8144f843fa5e406883566e063c473e9a/FLAGccada4316 [2021-11-06 10:01:15,181 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c927bf185/8144f843fa5e406883566e063c473e9a [2021-11-06 10:01:15,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 10:01:15,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 10:01:15,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 10:01:15,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 10:01:15,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 10:01:15,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:01:15" (1/1) ... [2021-11-06 10:01:15,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c7e3ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:15, skipping insertion in model container [2021-11-06 10:01:15,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:01:15" (1/1) ... [2021-11-06 10:01:15,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 10:01:15,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 10:01:15,417 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_swap_harness.i[4493,4506] [2021-11-06 10:01:15,420 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_swap_harness.i[4553,4566] [2021-11-06 10:01:15,429 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 10:01:15,431 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 10:01:15,779 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 10:01:15,845 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:15,845 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:15,846 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:15,848 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:15,850 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:15,857 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:15,861 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:15,863 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:15,863 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:15,864 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:15,865 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:15,866 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:15,867 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:16,046 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 10:01:16,047 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 10:01:16,047 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 10:01:16,048 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 10:01:16,049 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 10:01:16,049 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 10:01:16,050 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 10:01:16,050 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 10:01:16,050 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 10:01:16,051 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 10:01:16,137 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:16,137 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:16,139 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:16,150 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:16,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 10:01:16,227 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 10:01:16,237 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_swap_harness.i[4493,4506] [2021-11-06 10:01:16,238 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_swap_harness.i[4553,4566] [2021-11-06 10:01:16,239 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 10:01:16,239 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 10:01:16,263 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 10:01:16,273 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:16,274 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:16,274 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:16,274 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:16,275 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:16,278 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:16,279 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:16,279 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:16,279 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:16,280 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:16,280 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:16,281 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:16,281 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:16,316 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 10:01:16,317 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 10:01:16,318 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 10:01:16,318 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 10:01:16,319 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 10:01:16,320 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 10:01:16,320 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 10:01:16,320 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 10:01:16,321 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 10:01:16,321 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 10:01:16,360 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:16,362 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:16,363 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:16,365 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 10:01:16,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 10:01:16,527 INFO L208 MainTranslator]: Completed translation [2021-11-06 10:01:16,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:16 WrapperNode [2021-11-06 10:01:16,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 10:01:16,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 10:01:16,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 10:01:16,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 10:01:16,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:16" (1/1) ... [2021-11-06 10:01:16,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:16" (1/1) ... [2021-11-06 10:01:16,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 10:01:16,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 10:01:16,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 10:01:16,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 10:01:16,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:16" (1/1) ... [2021-11-06 10:01:16,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:16" (1/1) ... [2021-11-06 10:01:16,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:16" (1/1) ... [2021-11-06 10:01:16,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:16" (1/1) ... [2021-11-06 10:01:16,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:16" (1/1) ... [2021-11-06 10:01:16,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:16" (1/1) ... [2021-11-06 10:01:16,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:16" (1/1) ... [2021-11-06 10:01:16,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 10:01:16,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 10:01:16,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 10:01:16,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 10:01:16,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:16" (1/1) ... [2021-11-06 10:01:16,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 10:01:16,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:01:16,843 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 10:01:16,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 10:01:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 10:01:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 10:01:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 10:01:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 10:01:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 10:01:16,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 10:01:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 10:01:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-06 10:01:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 10:01:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 10:01:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 10:01:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 10:01:25,479 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 10:01:25,483 INFO L299 CfgBuilder]: Removed 431 assume(true) statements. [2021-11-06 10:01:25,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:01:25 BoogieIcfgContainer [2021-11-06 10:01:25,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 10:01:25,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 10:01:25,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 10:01:25,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 10:01:25,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:01:15" (1/3) ... [2021-11-06 10:01:25,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44dcfe8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:01:25, skipping insertion in model container [2021-11-06 10:01:25,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:01:16" (2/3) ... [2021-11-06 10:01:25,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44dcfe8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:01:25, skipping insertion in model container [2021-11-06 10:01:25,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:01:25" (3/3) ... [2021-11-06 10:01:25,496 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_swap_harness.i [2021-11-06 10:01:25,501 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 10:01:25,501 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2021-11-06 10:01:25,550 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 10:01:25,558 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 10:01:25,558 INFO L340 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-11-06 10:01:25,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 486 states, 470 states have (on average 1.4042553191489362) internal successors, (660), 485 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:25,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-06 10:01:25,598 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:01:25,599 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:01:25,599 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:01:25,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:01:25,604 INFO L85 PathProgramCache]: Analyzing trace with hash -230682450, now seen corresponding path program 1 times [2021-11-06 10:01:25,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:01:25,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518006954] [2021-11-06 10:01:25,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:25,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:01:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:01:26,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:01:26,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:01:26,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518006954] [2021-11-06 10:01:26,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518006954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:01:26,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:01:26,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 10:01:26,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437379238] [2021-11-06 10:01:26,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 10:01:26,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:01:26,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 10:01:26,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 10:01:26,147 INFO L87 Difference]: Start difference. First operand has 486 states, 470 states have (on average 1.4042553191489362) internal successors, (660), 485 states have internal predecessors, (660), 0 states have call successors, (0), 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 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:26,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:01:26,198 INFO L93 Difference]: Finished difference Result 968 states and 1315 transitions. [2021-11-06 10:01:26,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 10:01:26,199 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-11-06 10:01:26,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:01:26,208 INFO L225 Difference]: With dead ends: 968 [2021-11-06 10:01:26,208 INFO L226 Difference]: Without dead ends: 481 [2021-11-06 10:01:26,215 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 10:01:26,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2021-11-06 10:01:26,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2021-11-06 10:01:26,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 466 states have (on average 1.2703862660944205) internal successors, (592), 480 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:26,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 592 transitions. [2021-11-06 10:01:26,263 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 592 transitions. Word has length 27 [2021-11-06 10:01:26,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:01:26,264 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 592 transitions. [2021-11-06 10:01:26,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:26,264 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 592 transitions. [2021-11-06 10:01:26,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-06 10:01:26,265 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:01:26,265 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:01:26,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 10:01:26,266 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:01:26,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:01:26,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1765736932, now seen corresponding path program 1 times [2021-11-06 10:01:26,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:01:26,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187815731] [2021-11-06 10:01:26,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:26,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:01:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:01:26,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:01:26,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:01:26,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187815731] [2021-11-06 10:01:26,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187815731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:01:26,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:01:26,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 10:01:26,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816829237] [2021-11-06 10:01:26,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 10:01:26,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:01:26,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 10:01:26,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 10:01:26,472 INFO L87 Difference]: Start difference. First operand 481 states and 592 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:26,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:01:26,521 INFO L93 Difference]: Finished difference Result 949 states and 1169 transitions. [2021-11-06 10:01:26,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 10:01:26,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-11-06 10:01:26,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:01:26,524 INFO L225 Difference]: With dead ends: 949 [2021-11-06 10:01:26,524 INFO L226 Difference]: Without dead ends: 482 [2021-11-06 10:01:26,526 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 10:01:26,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-11-06 10:01:26,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2021-11-06 10:01:26,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 467 states have (on average 1.2698072805139187) internal successors, (593), 481 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:26,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 593 transitions. [2021-11-06 10:01:26,546 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 593 transitions. Word has length 27 [2021-11-06 10:01:26,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:01:26,547 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 593 transitions. [2021-11-06 10:01:26,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:26,547 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 593 transitions. [2021-11-06 10:01:26,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-06 10:01:26,548 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:01:26,548 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:01:26,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 10:01:26,548 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:01:26,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:01:26,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1546882214, now seen corresponding path program 1 times [2021-11-06 10:01:26,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:01:26,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327137815] [2021-11-06 10:01:26,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:26,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:01:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:01:26,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:01:26,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:01:26,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327137815] [2021-11-06 10:01:26,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327137815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:01:26,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:01:26,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:01:26,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107675502] [2021-11-06 10:01:26,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:01:26,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:01:26,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:01:26,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:01:26,797 INFO L87 Difference]: Start difference. First operand 482 states and 593 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:27,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:01:27,475 INFO L93 Difference]: Finished difference Result 932 states and 1146 transitions. [2021-11-06 10:01:27,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 10:01:27,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-11-06 10:01:27,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:01:27,477 INFO L225 Difference]: With dead ends: 932 [2021-11-06 10:01:27,477 INFO L226 Difference]: Without dead ends: 482 [2021-11-06 10:01:27,479 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:01:27,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-11-06 10:01:27,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2021-11-06 10:01:27,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 467 states have (on average 1.265524625267666) internal successors, (591), 481 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:27,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 591 transitions. [2021-11-06 10:01:27,490 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 591 transitions. Word has length 27 [2021-11-06 10:01:27,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:01:27,490 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 591 transitions. [2021-11-06 10:01:27,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:27,490 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 591 transitions. [2021-11-06 10:01:27,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-06 10:01:27,491 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:01:27,491 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:01:27,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 10:01:27,491 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:01:27,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:01:27,492 INFO L85 PathProgramCache]: Analyzing trace with hash 290840714, now seen corresponding path program 1 times [2021-11-06 10:01:27,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:01:27,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712591585] [2021-11-06 10:01:27,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:27,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:01:27,545 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 10:01:27,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987814517] [2021-11-06 10:01:27,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:27,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:01:27,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:01:27,547 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 10:01:27,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 10:01:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:01:28,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 2352 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 10:01:28,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:01:28,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:01:28,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:01:28,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712591585] [2021-11-06 10:01:28,517 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 10:01:28,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987814517] [2021-11-06 10:01:28,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987814517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:01:28,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:01:28,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 10:01:28,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847556606] [2021-11-06 10:01:28,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 10:01:28,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:01:28,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 10:01:28,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 10:01:28,518 INFO L87 Difference]: Start difference. First operand 482 states and 591 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:29,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:01:29,505 INFO L93 Difference]: Finished difference Result 946 states and 1154 transitions. [2021-11-06 10:01:29,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 10:01:29,506 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2021-11-06 10:01:29,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:01:29,508 INFO L225 Difference]: With dead ends: 946 [2021-11-06 10:01:29,508 INFO L226 Difference]: Without dead ends: 516 [2021-11-06 10:01:29,509 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-06 10:01:29,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-11-06 10:01:29,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 482. [2021-11-06 10:01:29,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 467 states have (on average 1.2569593147751605) internal successors, (587), 481 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:29,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 587 transitions. [2021-11-06 10:01:29,518 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 587 transitions. Word has length 35 [2021-11-06 10:01:29,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:01:29,519 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 587 transitions. [2021-11-06 10:01:29,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:29,519 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 587 transitions. [2021-11-06 10:01:29,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 10:01:29,520 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:01:29,520 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:01:29,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 10:01:29,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:01:29,744 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:01:29,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:01:29,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1877285844, now seen corresponding path program 1 times [2021-11-06 10:01:29,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:01:29,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236075575] [2021-11-06 10:01:29,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:29,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:01:29,792 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 10:01:29,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499962759] [2021-11-06 10:01:29,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:29,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:01:29,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:01:29,794 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 10:01:29,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 10:01:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:01:30,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 2537 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 10:01:30,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:01:30,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 10:01:30,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 10:01:30,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236075575] [2021-11-06 10:01:30,604 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 10:01:30,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499962759] [2021-11-06 10:01:30,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499962759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 10:01:30,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 10:01:30,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 10:01:30,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162333713] [2021-11-06 10:01:30,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 10:01:30,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 10:01:30,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 10:01:30,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 10:01:30,605 INFO L87 Difference]: Start difference. First operand 482 states and 587 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:31,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 10:01:31,599 INFO L93 Difference]: Finished difference Result 1028 states and 1269 transitions. [2021-11-06 10:01:31,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 10:01:31,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-06 10:01:31,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 10:01:31,602 INFO L225 Difference]: With dead ends: 1028 [2021-11-06 10:01:31,602 INFO L226 Difference]: Without dead ends: 577 [2021-11-06 10:01:31,603 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 10:01:31,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-11-06 10:01:31,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 520. [2021-11-06 10:01:31,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 505 states have (on average 1.2376237623762376) internal successors, (625), 519 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:31,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 625 transitions. [2021-11-06 10:01:31,615 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 625 transitions. Word has length 51 [2021-11-06 10:01:31,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 10:01:31,615 INFO L470 AbstractCegarLoop]: Abstraction has 520 states and 625 transitions. [2021-11-06 10:01:31,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 10:01:31,615 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 625 transitions. [2021-11-06 10:01:31,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 10:01:31,616 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 10:01:31,616 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 10:01:31,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 10:01:31,831 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 [2021-11-06 10:01:31,832 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 10:01:31,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 10:01:31,832 INFO L85 PathProgramCache]: Analyzing trace with hash 102278482, now seen corresponding path program 1 times [2021-11-06 10:01:31,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 10:01:31,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4944066] [2021-11-06 10:01:31,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:31,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 10:01:31,905 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 10:01:31,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637753684] [2021-11-06 10:01:31,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 10:01:31,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 10:01:31,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 10:01:31,907 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 10:01:31,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 10:15:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 10:15:19,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 2542 conjuncts, 220 conjunts are in the unsatisfiable core [2021-11-06 10:15:19,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 10:15:20,018 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 [2021-11-06 10:15:20,412 INFO L354 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2021-11-06 10:15:20,413 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 [2021-11-06 10:15:20,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:15:20,772 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 [2021-11-06 10:15:21,953 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-11-06 10:15:21,954 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 144 treesize of output 151 [2021-11-06 10:15:24,936 INFO L354 Elim1Store]: treesize reduction 136, result has 21.4 percent of original size [2021-11-06 10:15:24,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 70 treesize of output 94 [2021-11-06 10:15:26,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:15:26,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 10:15:26,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-06 10:15:26,712 INFO L354 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2021-11-06 10:15:26,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 91 treesize of output 91 [2021-11-06 10:15:42,538 INFO L354 Elim1Store]: treesize reduction 62, result has 41.5 percent of original size [2021-11-06 10:15:42,539 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 9 case distinctions, treesize of input 146 treesize of output 180 Killed by 15