./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bfd0d9ac 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/memset_using_uint64_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 9ff439c9da308e48e314eaeb6f620d0560f5430b3c601570b5afd8d635a5b965 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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/memset_using_uint64_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 9ff439c9da308e48e314eaeb6f620d0560f5430b3c601570b5afd8d635a5b965 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-bfd0d9a [2021-11-01 11:07:25,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-01 11:07:25,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-01 11:07:25,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-01 11:07:25,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-01 11:07:25,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-01 11:07:25,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-01 11:07:25,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-01 11:07:25,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-01 11:07:25,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-01 11:07:25,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-01 11:07:25,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-01 11:07:25,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-01 11:07:25,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-01 11:07:25,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-01 11:07:25,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-01 11:07:25,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-01 11:07:25,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-01 11:07:25,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-01 11:07:25,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-01 11:07:25,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-01 11:07:25,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-01 11:07:25,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-01 11:07:25,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-01 11:07:25,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-01 11:07:25,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-01 11:07:25,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-01 11:07:25,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-01 11:07:25,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-01 11:07:25,317 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-01 11:07:25,317 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-01 11:07:25,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-01 11:07:25,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-01 11:07:25,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-01 11:07:25,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-01 11:07:25,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-01 11:07:25,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-01 11:07:25,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-01 11:07:25,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-01 11:07:25,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-01 11:07:25,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-01 11:07:25,330 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-01 11:07:25,350 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-01 11:07:25,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-01 11:07:25,357 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-01 11:07:25,357 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-01 11:07:25,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-01 11:07:25,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-01 11:07:25,359 INFO L138 SettingsManager]: * Use SBE=true [2021-11-01 11:07:25,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-01 11:07:25,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-01 11:07:25,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-01 11:07:25,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-01 11:07:25,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-01 11:07:25,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-01 11:07:25,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-01 11:07:25,362 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-01 11:07:25,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-01 11:07:25,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-01 11:07:25,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-01 11:07:25,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-01 11:07:25,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-01 11:07:25,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-01 11:07:25,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-01 11:07:25,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-01 11:07:25,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-01 11:07:25,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-01 11:07:25,364 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-01 11:07:25,364 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-01 11:07:25,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-01 11:07:25,366 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-01 11:07:25,366 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff439c9da308e48e314eaeb6f620d0560f5430b3c601570b5afd8d635a5b965 [2021-11-01 11:07:25,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-01 11:07:25,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-01 11:07:25,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-01 11:07:25,590 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-01 11:07:25,591 INFO L275 PluginConnector]: CDTParser initialized [2021-11-01 11:07:25,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2021-11-01 11:07:25,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6637a4a14/d042eaf3bb4e44e38f894e5ca75ae921/FLAGcf71fbf4b [2021-11-01 11:07:26,160 INFO L306 CDTParser]: Found 1 translation units. [2021-11-01 11:07:26,161 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2021-11-01 11:07:26,186 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6637a4a14/d042eaf3bb4e44e38f894e5ca75ae921/FLAGcf71fbf4b [2021-11-01 11:07:26,432 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6637a4a14/d042eaf3bb4e44e38f894e5ca75ae921 [2021-11-01 11:07:26,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-01 11:07:26,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-01 11:07:26,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-01 11:07:26,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-01 11:07:26,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-01 11:07:26,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 11:07:26" (1/1) ... [2021-11-01 11:07:26,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46669790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:26, skipping insertion in model container [2021-11-01 11:07:26,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 11:07:26" (1/1) ... [2021-11-01 11:07:26,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-01 11:07:26,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-01 11:07:26,688 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/memset_using_uint64_harness.i[4493,4506] [2021-11-01 11:07:26,691 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/memset_using_uint64_harness.i[4553,4566] [2021-11-01 11:07:26,703 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-01 11:07:26,711 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-01 11:07:27,035 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,036 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,036 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,036 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,038 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,046 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,047 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,048 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,048 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,049 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,050 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,050 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,050 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,122 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-01 11:07:27,123 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-01 11:07:27,124 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-01 11:07:27,125 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-01 11:07:27,126 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-01 11:07:27,126 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-01 11:07:27,126 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-01 11:07:27,127 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-01 11:07:27,127 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-01 11:07:27,128 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-01 11:07:27,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-01 11:07:27,170 INFO L203 MainTranslator]: Completed pre-run [2021-11-01 11:07:27,179 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/memset_using_uint64_harness.i[4493,4506] [2021-11-01 11:07:27,180 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/memset_using_uint64_harness.i[4553,4566] [2021-11-01 11:07:27,185 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-01 11:07:27,186 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-01 11:07:27,225 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,226 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,226 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,226 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,227 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,232 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,232 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,233 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,233 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,234 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,234 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,235 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,243 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:27,269 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-01 11:07:27,270 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-01 11:07:27,271 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-01 11:07:27,275 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-01 11:07:27,277 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-01 11:07:27,278 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-01 11:07:27,279 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-01 11:07:27,279 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-01 11:07:27,280 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-01 11:07:27,280 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-01 11:07:27,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-01 11:07:27,413 INFO L208 MainTranslator]: Completed translation [2021-11-01 11:07:27,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:27 WrapperNode [2021-11-01 11:07:27,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-01 11:07:27,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-01 11:07:27,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-01 11:07:27,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-01 11:07:27,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:27" (1/1) ... [2021-11-01 11:07:27,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:27" (1/1) ... [2021-11-01 11:07:27,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-01 11:07:27,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-01 11:07:27,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-01 11:07:27,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-01 11:07:27,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:27" (1/1) ... [2021-11-01 11:07:27,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:27" (1/1) ... [2021-11-01 11:07:27,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:27" (1/1) ... [2021-11-01 11:07:27,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:27" (1/1) ... [2021-11-01 11:07:27,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:27" (1/1) ... [2021-11-01 11:07:27,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:27" (1/1) ... [2021-11-01 11:07:27,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:27" (1/1) ... [2021-11-01 11:07:27,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-01 11:07:27,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-01 11:07:27,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-01 11:07:27,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-01 11:07:27,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:27" (1/1) ... [2021-11-01 11:07:27,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-01 11:07:27,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-01 11:07:27,578 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) [2021-11-01 11:07:27,584 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 [2021-11-01 11:07:27,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-01 11:07:27,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-01 11:07:27,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-01 11:07:27,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-01 11:07:27,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-01 11:07:27,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-01 11:07:27,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-01 11:07:27,915 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-01 11:07:27,915 INFO L299 CfgBuilder]: Removed 36 assume(true) statements. [2021-11-01 11:07:27,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 11:07:27 BoogieIcfgContainer [2021-11-01 11:07:27,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-01 11:07:27,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-01 11:07:27,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-01 11:07:27,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-01 11:07:27,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 11:07:26" (1/3) ... [2021-11-01 11:07:27,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e47faf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 11:07:27, skipping insertion in model container [2021-11-01 11:07:27,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:27" (2/3) ... [2021-11-01 11:07:27,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e47faf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 11:07:27, skipping insertion in model container [2021-11-01 11:07:27,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 11:07:27" (3/3) ... [2021-11-01 11:07:27,924 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_using_uint64_harness.i [2021-11-01 11:07:27,927 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-01 11:07:27,927 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-01 11:07:27,957 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-01 11:07:27,962 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 [2021-11-01 11:07:27,962 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-01 11:07:27,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 53 states have (on average 1.490566037735849) internal successors, (79), 56 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:27,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-01 11:07:27,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:07:27,975 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] [2021-11-01 11:07:27,975 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:07:27,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:07:27,979 INFO L85 PathProgramCache]: Analyzing trace with hash 546734931, now seen corresponding path program 1 times [2021-11-01 11:07:27,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-01 11:07:27,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248602905] [2021-11-01 11:07:27,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:07:27,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-01 11:07:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:07:28,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:07:28,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-01 11:07:28,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248602905] [2021-11-01 11:07:28,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248602905] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-01 11:07:28,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:07:28,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-01 11:07:28,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429590862] [2021-11-01 11:07:28,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-01 11:07:28,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-01 11:07:28,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-01 11:07:28,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-01 11:07:28,244 INFO L87 Difference]: Start difference. First operand has 57 states, 53 states have (on average 1.490566037735849) internal successors, (79), 56 states have internal predecessors, (79), 0 states have call successors, (0), 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 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:28,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:07:28,381 INFO L93 Difference]: Finished difference Result 111 states and 154 transitions. [2021-11-01 11:07:28,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-01 11:07:28,383 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-11-01 11:07:28,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:07:28,389 INFO L225 Difference]: With dead ends: 111 [2021-11-01 11:07:28,389 INFO L226 Difference]: Without dead ends: 51 [2021-11-01 11:07:28,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-01 11:07:28,395 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 104.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.52ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 121.76ms IncrementalHoareTripleChecker+Time [2021-11-01 11:07:28,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 69 Unknown, 0 Unchecked, 0.52ms Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 121.76ms Time] [2021-11-01 11:07:28,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-01 11:07:28,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-01 11:07:28,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 50 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:28,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2021-11-01 11:07:28,422 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 31 [2021-11-01 11:07:28,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:07:28,423 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2021-11-01 11:07:28,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:28,423 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2021-11-01 11:07:28,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-01 11:07:28,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:07:28,424 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] [2021-11-01 11:07:28,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-01 11:07:28,424 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:07:28,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:07:28,425 INFO L85 PathProgramCache]: Analyzing trace with hash 2045186899, now seen corresponding path program 1 times [2021-11-01 11:07:28,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-01 11:07:28,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814934459] [2021-11-01 11:07:28,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:07:28,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-01 11:07:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:07:28,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:07:28,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-01 11:07:28,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814934459] [2021-11-01 11:07:28,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814934459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-01 11:07:28,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:07:28,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-01 11:07:28,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811513494] [2021-11-01 11:07:28,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-01 11:07:28,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-01 11:07:28,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-01 11:07:28,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-01 11:07:28,593 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:28,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:07:28,853 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2021-11-01 11:07:28,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-01 11:07:28,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-11-01 11:07:28,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:07:28,855 INFO L225 Difference]: With dead ends: 98 [2021-11-01 11:07:28,855 INFO L226 Difference]: Without dead ends: 77 [2021-11-01 11:07:28,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.34ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-01 11:07:28,856 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 190.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.13ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 237.09ms IncrementalHoareTripleChecker+Time [2021-11-01 11:07:28,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 231 Unknown, 0 Unchecked, 3.13ms Time], IncrementalHoareTripleChecker [1 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 237.09ms Time] [2021-11-01 11:07:28,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-11-01 11:07:28,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 53. [2021-11-01 11:07:28,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 50 states have (on average 1.28) internal successors, (64), 52 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:28,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2021-11-01 11:07:28,867 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 31 [2021-11-01 11:07:28,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:07:28,867 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2021-11-01 11:07:28,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:28,868 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2021-11-01 11:07:28,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-01 11:07:28,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:07:28,869 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] [2021-11-01 11:07:28,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-01 11:07:28,869 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:07:28,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:07:28,869 INFO L85 PathProgramCache]: Analyzing trace with hash -474773035, now seen corresponding path program 1 times [2021-11-01 11:07:28,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-01 11:07:28,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778887004] [2021-11-01 11:07:28,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:07:28,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-01 11:07:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:07:29,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:07:29,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-01 11:07:29,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778887004] [2021-11-01 11:07:29,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778887004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-01 11:07:29,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:07:29,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-01 11:07:29,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475896186] [2021-11-01 11:07:29,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-01 11:07:29,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-01 11:07:29,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-01 11:07:29,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-01 11:07:29,048 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:29,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:07:29,248 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2021-11-01 11:07:29,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-01 11:07:29,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-11-01 11:07:29,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:07:29,249 INFO L225 Difference]: With dead ends: 58 [2021-11-01 11:07:29,249 INFO L226 Difference]: Without dead ends: 56 [2021-11-01 11:07:29,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.19ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-01 11:07:29,250 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 155.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 181.18ms IncrementalHoareTripleChecker+Time [2021-11-01 11:07:29,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 115 Unknown, 0 Unchecked, 2.46ms Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 181.18ms Time] [2021-11-01 11:07:29,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-01 11:07:29,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2021-11-01 11:07:29,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 50 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:29,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2021-11-01 11:07:29,255 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 31 [2021-11-01 11:07:29,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:07:29,257 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2021-11-01 11:07:29,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:29,258 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2021-11-01 11:07:29,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-01 11:07:29,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:07:29,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-01 11:07:29,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-01 11:07:29,261 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:07:29,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:07:29,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1904869812, now seen corresponding path program 1 times [2021-11-01 11:07:29,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-01 11:07:29,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035903372] [2021-11-01 11:07:29,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:07:29,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-01 11:07:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:07:29,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:07:29,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-01 11:07:29,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035903372] [2021-11-01 11:07:29,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035903372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-01 11:07:29,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:07:29,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-01 11:07:29,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839069993] [2021-11-01 11:07:29,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-01 11:07:29,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-01 11:07:29,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-01 11:07:29,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-01 11:07:29,409 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:29,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:07:29,701 INFO L93 Difference]: Finished difference Result 102 states and 121 transitions. [2021-11-01 11:07:29,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-01 11:07:29,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-01 11:07:29,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:07:29,704 INFO L225 Difference]: With dead ends: 102 [2021-11-01 11:07:29,704 INFO L226 Difference]: Without dead ends: 87 [2021-11-01 11:07:29,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.54ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-01 11:07:29,706 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 125 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 225.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.92ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 263.22ms IncrementalHoareTripleChecker+Time [2021-11-01 11:07:29,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 0 Invalid, 182 Unknown, 0 Unchecked, 2.92ms Time], IncrementalHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 263.22ms Time] [2021-11-01 11:07:29,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-01 11:07:29,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 79. [2021-11-01 11:07:29,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 77 states have (on average 1.2857142857142858) internal successors, (99), 78 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:29,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2021-11-01 11:07:29,715 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 36 [2021-11-01 11:07:29,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:07:29,716 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2021-11-01 11:07:29,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:29,716 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2021-11-01 11:07:29,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-01 11:07:29,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:07:29,716 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] [2021-11-01 11:07:29,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-01 11:07:29,717 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:07:29,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:07:29,717 INFO L85 PathProgramCache]: Analyzing trace with hash 451092579, now seen corresponding path program 1 times [2021-11-01 11:07:29,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-01 11:07:29,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298561914] [2021-11-01 11:07:29,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:07:29,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-01 11:07:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:07:29,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:07:29,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-01 11:07:29,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298561914] [2021-11-01 11:07:29,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298561914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-01 11:07:29,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:07:29,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-01 11:07:29,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681648842] [2021-11-01 11:07:29,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-01 11:07:29,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-01 11:07:29,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-01 11:07:29,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-01 11:07:29,921 INFO L87 Difference]: Start difference. First operand 79 states and 99 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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) [2021-11-01 11:07:30,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:07:30,240 INFO L93 Difference]: Finished difference Result 124 states and 154 transitions. [2021-11-01 11:07:30,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-01 11:07:30,241 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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 [2021-11-01 11:07:30,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:07:30,241 INFO L225 Difference]: With dead ends: 124 [2021-11-01 11:07:30,242 INFO L226 Difference]: Without dead ends: 81 [2021-11-01 11:07:30,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 21.87ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-01 11:07:30,243 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 57 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 269.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.95ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 306.82ms IncrementalHoareTripleChecker+Time [2021-11-01 11:07:30,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 0 Invalid, 240 Unknown, 0 Unchecked, 0.95ms Time], IncrementalHoareTripleChecker [1 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 306.82ms Time] [2021-11-01 11:07:30,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-01 11:07:30,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2021-11-01 11:07:30,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 78 states have (on average 1.2820512820512822) internal successors, (100), 79 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:30,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2021-11-01 11:07:30,248 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 37 [2021-11-01 11:07:30,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:07:30,249 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2021-11-01 11:07:30,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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) [2021-11-01 11:07:30,249 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2021-11-01 11:07:30,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-01 11:07:30,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:07:30,249 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] [2021-11-01 11:07:30,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-01 11:07:30,250 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:07:30,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:07:30,250 INFO L85 PathProgramCache]: Analyzing trace with hash 675420878, now seen corresponding path program 1 times [2021-11-01 11:07:30,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-01 11:07:30,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068708141] [2021-11-01 11:07:30,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:07:30,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-01 11:07:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:07:30,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:07:30,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-01 11:07:30,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068708141] [2021-11-01 11:07:30,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068708141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-01 11:07:30,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:07:30,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-01 11:07:30,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48133912] [2021-11-01 11:07:30,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-01 11:07:30,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-01 11:07:30,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-01 11:07:30,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-01 11:07:30,326 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:30,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:07:30,608 INFO L93 Difference]: Finished difference Result 88 states and 107 transitions. [2021-11-01 11:07:30,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-01 11:07:30,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2021-11-01 11:07:30,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:07:30,609 INFO L225 Difference]: With dead ends: 88 [2021-11-01 11:07:30,609 INFO L226 Difference]: Without dead ends: 52 [2021-11-01 11:07:30,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.80ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-01 11:07:30,610 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 102 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 227.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.26ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 262.50ms IncrementalHoareTripleChecker+Time [2021-11-01 11:07:30,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 0 Invalid, 182 Unknown, 0 Unchecked, 1.26ms Time], IncrementalHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 262.50ms Time] [2021-11-01 11:07:30,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-01 11:07:30,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-11-01 11:07:30,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 1.24) internal successors, (62), 51 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:30,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2021-11-01 11:07:30,613 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 38 [2021-11-01 11:07:30,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:07:30,614 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2021-11-01 11:07:30,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:30,614 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2021-11-01 11:07:30,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-01 11:07:30,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:07:30,614 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] [2021-11-01 11:07:30,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-01 11:07:30,614 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:07:30,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:07:30,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1196461279, now seen corresponding path program 1 times [2021-11-01 11:07:30,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-01 11:07:30,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207353314] [2021-11-01 11:07:30,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:07:30,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-01 11:07:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-01 11:07:30,733 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-01 11:07:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-01 11:07:30,857 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-01 11:07:30,858 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-01 11:07:30,858 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-01 11:07:30,865 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-01 11:07:30,865 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-01 11:07:30,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-01 11:07:30,873 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-11-01 11:07:30,875 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-01 11:07:30,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.11 11:07:30 BoogieIcfgContainer [2021-11-01 11:07:30,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-01 11:07:30,933 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-01 11:07:30,933 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-01 11:07:30,933 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-01 11:07:30,933 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 11:07:27" (3/4) ... [2021-11-01 11:07:30,935 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-01 11:07:30,935 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-01 11:07:30,936 INFO L158 Benchmark]: Toolchain (without parser) took 4499.95ms. Allocated memory was 102.8MB in the beginning and 199.2MB in the end (delta: 96.5MB). Free memory was 68.2MB in the beginning and 87.0MB in the end (delta: -18.8MB). Peak memory consumption was 76.3MB. Max. memory is 16.1GB. [2021-11-01 11:07:30,937 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 102.8MB. Free memory was 58.8MB in the beginning and 58.8MB in the end (delta: 41.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-01 11:07:30,937 INFO L158 Benchmark]: CACSL2BoogieTranslator took 977.40ms. Allocated memory was 102.8MB in the beginning and 148.9MB in the end (delta: 46.1MB). Free memory was 68.0MB in the beginning and 83.9MB in the end (delta: -15.9MB). Peak memory consumption was 53.6MB. Max. memory is 16.1GB. [2021-11-01 11:07:30,937 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.25ms. Allocated memory is still 148.9MB. Free memory was 83.9MB in the beginning and 79.0MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-01 11:07:30,937 INFO L158 Benchmark]: Boogie Preprocessor took 53.65ms. Allocated memory is still 148.9MB. Free memory was 79.0MB in the beginning and 76.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-01 11:07:30,939 INFO L158 Benchmark]: RCFGBuilder took 361.17ms. Allocated memory is still 148.9MB. Free memory was 76.9MB in the beginning and 100.3MB in the end (delta: -23.4MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2021-11-01 11:07:30,939 INFO L158 Benchmark]: TraceAbstraction took 3013.95ms. Allocated memory was 148.9MB in the beginning and 199.2MB in the end (delta: 50.3MB). Free memory was 99.5MB in the beginning and 87.0MB in the end (delta: 12.5MB). Peak memory consumption was 61.5MB. Max. memory is 16.1GB. [2021-11-01 11:07:30,940 INFO L158 Benchmark]: Witness Printer took 2.77ms. Allocated memory is still 199.2MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-01 11:07:30,941 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 102.8MB. Free memory was 58.8MB in the beginning and 58.8MB in the end (delta: 41.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 977.40ms. Allocated memory was 102.8MB in the beginning and 148.9MB in the end (delta: 46.1MB). Free memory was 68.0MB in the beginning and 83.9MB in the end (delta: -15.9MB). Peak memory consumption was 53.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 86.25ms. Allocated memory is still 148.9MB. Free memory was 83.9MB in the beginning and 79.0MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.65ms. Allocated memory is still 148.9MB. Free memory was 79.0MB in the beginning and 76.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 361.17ms. Allocated memory is still 148.9MB. Free memory was 76.9MB in the beginning and 100.3MB in the end (delta: -23.4MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3013.95ms. Allocated memory was 148.9MB in the beginning and 199.2MB in the end (delta: 50.3MB). Free memory was 99.5MB in the beginning and 87.0MB in the end (delta: 12.5MB). Peak memory consumption was 61.5MB. Max. memory is 16.1GB. * Witness Printer took 2.77ms. Allocated memory is still 199.2MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 5884. Possible FailurePath: [L5937] short d1[160]; [L5938] short d2[160]; [L5939] int c = __VERIFIER_nondet_int(); [L5940] unsigned size = __VERIFIER_nondet_uint(); [L211] COND FALSE !(!cond) [L211] COND FALSE !(!cond) [L5871] COND TRUE n > 0 [L5872] char *sp = (char *)s; [L5873] unsigned long i = 0; [L5873] COND TRUE i < n [L5874] sp[i] = c [L5873] i++ [L5873] COND FALSE !(i < n) [L5876] return s; [L211] COND FALSE !(!cond) [L5883] size_t num_uint64s = n >> 3; [L5884] size_t rem = n & 0x7; [L5886] uint8_t *d = (uint8_t *)dst; [L5890] case 7: [L5892] case 6: [L5893] d[5] = c [L5894] case 5: [L5895] d[4] = c [L5896] case 4: [L5897] d[3] = c [L5898] case 3: [L5899] d[2] = c [L5900] case 2: [L5901] d[1] = c [L5902] case 1: [L5903] d[0] = c [L5906] d += rem [L5908] uint64_t compounded = 0; [L5909] COND FALSE !(num_uint64s > 0 && c != 0) [L5921] size_t i = 0; [L5921] COND FALSE !(i < num_uint64s) [L5925] return dst; [L5908] uint64_t compounded = 0; [L5925] return dst; [L223] COND FALSE !(!cond) [L5655-L5658] COND TRUE len > 0 && a != ((void *)0) && b != ((void *)0) [L266] return __VERIFIER_nondet_ulong(); [L5660] size_t i = nondet_uint64_t(); [L211] COND FALSE !(!cond) [L5664] a[i] [L5664] b[i] [L223] COND TRUE !cond [L223] reach_error() - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 57 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2918.62ms, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 11.59ms, AutomataDifference: 1555.75ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 6.48ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 356 SdHoareTripleChecker+Valid, 1372.56ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 356 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1172.80ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 533 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1017 IncrementalHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 1017 mSolverCounterSat, 11.24ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 84.77ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=5, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 42.04ms AutomataMinimizationTime, 6 MinimizatonAttempts, 38 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 35.98ms SsaConstructionTime, 327.71ms SatisfiabilityAnalysisTime, 621.79ms InterpolantComputationTime, 243 NumberOfCodeBlocks, 243 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 835 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-01 11:07:30,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-bfd0d9a [2021-11-01 11:07:32,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-01 11:07:32,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-01 11:07:32,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-01 11:07:32,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-01 11:07:32,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-01 11:07:32,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-01 11:07:32,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-01 11:07:32,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-01 11:07:32,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-01 11:07:32,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-01 11:07:32,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-01 11:07:32,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-01 11:07:32,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-01 11:07:32,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-01 11:07:32,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-01 11:07:32,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-01 11:07:32,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-01 11:07:32,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-01 11:07:32,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-01 11:07:32,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-01 11:07:32,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-01 11:07:32,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-01 11:07:32,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-01 11:07:32,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-01 11:07:32,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-01 11:07:32,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-01 11:07:32,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-01 11:07:32,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-01 11:07:32,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-01 11:07:32,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-01 11:07:32,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-01 11:07:32,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-01 11:07:32,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-01 11:07:32,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-01 11:07:32,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-01 11:07:32,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-01 11:07:32,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-01 11:07:32,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-01 11:07:32,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-01 11:07:32,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-01 11:07:32,753 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-01 11:07:32,780 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-01 11:07:32,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-01 11:07:32,782 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-01 11:07:32,782 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-01 11:07:32,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-01 11:07:32,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-01 11:07:32,784 INFO L138 SettingsManager]: * Use SBE=true [2021-11-01 11:07:32,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-01 11:07:32,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-01 11:07:32,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-01 11:07:32,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-01 11:07:32,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-01 11:07:32,786 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-01 11:07:32,786 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-01 11:07:32,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-01 11:07:32,786 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-01 11:07:32,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-01 11:07:32,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-01 11:07:32,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-01 11:07:32,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-01 11:07:32,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-01 11:07:32,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-01 11:07:32,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-01 11:07:32,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-01 11:07:32,794 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-01 11:07:32,794 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-01 11:07:32,794 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-01 11:07:32,795 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-01 11:07:32,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-01 11:07:32,795 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-01 11:07:32,795 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-01 11:07:32,795 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff439c9da308e48e314eaeb6f620d0560f5430b3c601570b5afd8d635a5b965 [2021-11-01 11:07:33,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-01 11:07:33,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-01 11:07:33,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-01 11:07:33,071 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-01 11:07:33,071 INFO L275 PluginConnector]: CDTParser initialized [2021-11-01 11:07:33,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2021-11-01 11:07:33,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87fe4a96a/e1fba62440ea4a50a9a6126473f3fc3d/FLAG6acda2ee3 [2021-11-01 11:07:33,726 INFO L306 CDTParser]: Found 1 translation units. [2021-11-01 11:07:33,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2021-11-01 11:07:33,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87fe4a96a/e1fba62440ea4a50a9a6126473f3fc3d/FLAG6acda2ee3 [2021-11-01 11:07:33,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87fe4a96a/e1fba62440ea4a50a9a6126473f3fc3d [2021-11-01 11:07:33,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-01 11:07:33,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-01 11:07:33,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-01 11:07:33,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-01 11:07:33,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-01 11:07:33,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 11:07:33" (1/1) ... [2021-11-01 11:07:33,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27dde193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:33, skipping insertion in model container [2021-11-01 11:07:33,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 11:07:33" (1/1) ... [2021-11-01 11:07:33,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-01 11:07:34,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-01 11:07:34,234 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/memset_using_uint64_harness.i[4493,4506] [2021-11-01 11:07:34,238 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/memset_using_uint64_harness.i[4553,4566] [2021-11-01 11:07:34,251 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-01 11:07:34,255 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-01 11:07:34,688 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,689 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,689 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,691 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,692 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,712 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,714 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,717 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,719 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,720 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,722 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,722 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,723 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,823 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-01 11:07:34,824 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-01 11:07:34,825 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-01 11:07:34,841 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-01 11:07:34,843 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-01 11:07:34,843 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-01 11:07:34,845 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-01 11:07:34,846 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-01 11:07:34,848 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-01 11:07:34,848 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-01 11:07:34,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-01 11:07:34,914 INFO L203 MainTranslator]: Completed pre-run [2021-11-01 11:07:34,926 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/memset_using_uint64_harness.i[4493,4506] [2021-11-01 11:07:34,926 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/memset_using_uint64_harness.i[4553,4566] [2021-11-01 11:07:34,928 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-01 11:07:34,928 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-01 11:07:34,962 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,963 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,963 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,964 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,964 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,971 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,971 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,972 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,973 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,973 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,974 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,974 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,975 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 11:07:34,990 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-01 11:07:34,991 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-01 11:07:34,992 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-01 11:07:34,992 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-01 11:07:34,993 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-01 11:07:34,993 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-01 11:07:34,993 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-01 11:07:34,994 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-01 11:07:34,994 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-01 11:07:34,994 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-01 11:07:35,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-01 11:07:35,139 INFO L208 MainTranslator]: Completed translation [2021-11-01 11:07:35,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:35 WrapperNode [2021-11-01 11:07:35,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-01 11:07:35,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-01 11:07:35,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-01 11:07:35,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-01 11:07:35,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:35" (1/1) ... [2021-11-01 11:07:35,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:35" (1/1) ... [2021-11-01 11:07:35,239 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-01 11:07:35,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-01 11:07:35,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-01 11:07:35,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-01 11:07:35,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:35" (1/1) ... [2021-11-01 11:07:35,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:35" (1/1) ... [2021-11-01 11:07:35,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:35" (1/1) ... [2021-11-01 11:07:35,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:35" (1/1) ... [2021-11-01 11:07:35,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:35" (1/1) ... [2021-11-01 11:07:35,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:35" (1/1) ... [2021-11-01 11:07:35,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:35" (1/1) ... [2021-11-01 11:07:35,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-01 11:07:35,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-01 11:07:35,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-01 11:07:35,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-01 11:07:35,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:35" (1/1) ... [2021-11-01 11:07:35,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-01 11:07:35,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-01 11:07:35,317 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) [2021-11-01 11:07:35,335 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 [2021-11-01 11:07:35,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-01 11:07:35,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-01 11:07:35,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-01 11:07:35,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-01 11:07:35,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-01 11:07:35,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-01 11:07:35,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-01 11:07:35,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-01 11:07:35,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-01 11:07:35,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-01 11:07:35,648 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-01 11:07:35,654 INFO L299 CfgBuilder]: Removed 36 assume(true) statements. [2021-11-01 11:07:35,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 11:07:35 BoogieIcfgContainer [2021-11-01 11:07:35,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-01 11:07:35,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-01 11:07:35,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-01 11:07:35,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-01 11:07:35,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 11:07:33" (1/3) ... [2021-11-01 11:07:35,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19517bad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 11:07:35, skipping insertion in model container [2021-11-01 11:07:35,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:07:35" (2/3) ... [2021-11-01 11:07:35,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19517bad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 11:07:35, skipping insertion in model container [2021-11-01 11:07:35,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 11:07:35" (3/3) ... [2021-11-01 11:07:35,667 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_using_uint64_harness.i [2021-11-01 11:07:35,671 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-01 11:07:35,671 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-01 11:07:35,709 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-01 11:07:35,716 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 [2021-11-01 11:07:35,717 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-01 11:07:35,727 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 53 states have (on average 1.490566037735849) internal successors, (79), 56 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:35,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-01 11:07:35,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:07:35,732 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] [2021-11-01 11:07:35,733 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:07:35,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:07:35,736 INFO L85 PathProgramCache]: Analyzing trace with hash 546734931, now seen corresponding path program 1 times [2021-11-01 11:07:35,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 11:07:35,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908925316] [2021-11-01 11:07:35,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:07:35,747 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 11:07:35,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 11:07:35,749 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 11:07:35,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-01 11:07:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:07:35,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-01 11:07:35,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 11:07:36,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:07:36,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 11:07:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:07:36,136 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 11:07:36,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908925316] [2021-11-01 11:07:36,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908925316] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 11:07:36,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:07:36,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-01 11:07:36,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76803973] [2021-11-01 11:07:36,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-01 11:07:36,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 11:07:36,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-01 11:07:36,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-01 11:07:36,170 INFO L87 Difference]: Start difference. First operand has 57 states, 53 states have (on average 1.490566037735849) internal successors, (79), 56 states have internal predecessors, (79), 0 states have call successors, (0), 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 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:38,278 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:07:38,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:07:38,393 INFO L93 Difference]: Finished difference Result 111 states and 154 transitions. [2021-11-01 11:07:38,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-01 11:07:38,395 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-11-01 11:07:38,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:07:38,400 INFO L225 Difference]: With dead ends: 111 [2021-11-01 11:07:38,400 INFO L226 Difference]: Without dead ends: 51 [2021-11-01 11:07:38,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.18ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-01 11:07:38,404 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2144.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.83ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2193.92ms IncrementalHoareTripleChecker+Time [2021-11-01 11:07:38,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 69 Unknown, 0 Unchecked, 0.83ms Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 1 Unknown, 0 Unchecked, 2193.92ms Time] [2021-11-01 11:07:38,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-01 11:07:38,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-01 11:07:38,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 50 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:38,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2021-11-01 11:07:38,427 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 31 [2021-11-01 11:07:38,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:07:38,427 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2021-11-01 11:07:38,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:38,428 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2021-11-01 11:07:38,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-01 11:07:38,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:07:38,428 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] [2021-11-01 11:07:38,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-01 11:07:38,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 11:07:38,644 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:07:38,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:07:38,644 INFO L85 PathProgramCache]: Analyzing trace with hash 2045186899, now seen corresponding path program 1 times [2021-11-01 11:07:38,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 11:07:38,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823418504] [2021-11-01 11:07:38,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:07:38,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 11:07:38,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 11:07:38,647 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 11:07:38,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-01 11:07:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:07:38,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-01 11:07:38,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 11:07:39,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:07:39,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 11:07:39,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:07:39,561 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 11:07:39,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823418504] [2021-11-01 11:07:39,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823418504] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 11:07:39,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:07:39,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-01 11:07:39,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590895057] [2021-11-01 11:07:39,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-01 11:07:39,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 11:07:39,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-01 11:07:39,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-01 11:07:39,563 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:42,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:07:42,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:07:42,424 INFO L93 Difference]: Finished difference Result 100 states and 120 transitions. [2021-11-01 11:07:42,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-01 11:07:42,425 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 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 31 [2021-11-01 11:07:42,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:07:42,427 INFO L225 Difference]: With dead ends: 100 [2021-11-01 11:07:42,427 INFO L226 Difference]: Without dead ends: 64 [2021-11-01 11:07:42,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 366.38ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-01 11:07:42,429 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2630.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.30ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 2765.59ms IncrementalHoareTripleChecker+Time [2021-11-01 11:07:42,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 367 Unknown, 0 Unchecked, 6.30ms Time], IncrementalHoareTripleChecker [6 Valid, 355 Invalid, 1 Unknown, 5 Unchecked, 2765.59ms Time] [2021-11-01 11:07:42,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-01 11:07:42,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2021-11-01 11:07:42,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 57 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:42,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2021-11-01 11:07:42,434 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 31 [2021-11-01 11:07:42,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:07:42,435 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2021-11-01 11:07:42,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:42,435 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2021-11-01 11:07:42,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-01 11:07:42,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:07:42,436 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] [2021-11-01 11:07:42,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-01 11:07:42,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 11:07:42,640 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:07:42,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:07:42,640 INFO L85 PathProgramCache]: Analyzing trace with hash 356243157, now seen corresponding path program 1 times [2021-11-01 11:07:42,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 11:07:42,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266595267] [2021-11-01 11:07:42,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:07:42,641 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 11:07:42,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 11:07:42,642 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 11:07:42,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-01 11:07:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:07:42,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-01 11:07:42,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 11:07:43,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:07:43,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 11:07:43,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:07:43,599 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 11:07:43,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266595267] [2021-11-01 11:07:43,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [266595267] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 11:07:43,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:07:43,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 8] imperfect sequences [] total 12 [2021-11-01 11:07:43,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281071340] [2021-11-01 11:07:43,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-01 11:07:43,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 11:07:43,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-01 11:07:43,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-01 11:07:43,600 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:46,056 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:07:46,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:07:46,320 INFO L93 Difference]: Finished difference Result 99 states and 118 transitions. [2021-11-01 11:07:46,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-01 11:07:46,321 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-01 11:07:46,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:07:46,321 INFO L225 Difference]: With dead ends: 99 [2021-11-01 11:07:46,321 INFO L226 Difference]: Without dead ends: 65 [2021-11-01 11:07:46,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 421.43ms TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-11-01 11:07:46,323 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2549.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.98ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 2641.59ms IncrementalHoareTripleChecker+Time [2021-11-01 11:07:46,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 467 Unknown, 0 Unchecked, 2.98ms Time], IncrementalHoareTripleChecker [5 Valid, 338 Invalid, 1 Unknown, 123 Unchecked, 2641.59ms Time] [2021-11-01 11:07:46,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-01 11:07:46,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2021-11-01 11:07:46,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 57 states have (on average 1.263157894736842) internal successors, (72), 59 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:46,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2021-11-01 11:07:46,327 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 31 [2021-11-01 11:07:46,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:07:46,327 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2021-11-01 11:07:46,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:46,327 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2021-11-01 11:07:46,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-01 11:07:46,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:07:46,328 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] [2021-11-01 11:07:46,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-01 11:07:46,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 11:07:46,539 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:07:46,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:07:46,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1232104745, now seen corresponding path program 1 times [2021-11-01 11:07:46,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 11:07:46,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001549735] [2021-11-01 11:07:46,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:07:46,541 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 11:07:46,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 11:07:46,542 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 11:07:46,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-01 11:07:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:07:46,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-01 11:07:46,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 11:07:47,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:07:47,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 11:07:47,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:07:47,642 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 11:07:47,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001549735] [2021-11-01 11:07:47,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001549735] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 11:07:47,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:07:47,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 9] imperfect sequences [] total 13 [2021-11-01 11:07:47,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764520967] [2021-11-01 11:07:47,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-01 11:07:47,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 11:07:47,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-01 11:07:47,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-01 11:07:47,644 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:50,226 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:07:50,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:07:50,574 INFO L93 Difference]: Finished difference Result 98 states and 116 transitions. [2021-11-01 11:07:50,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-01 11:07:50,574 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 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 31 [2021-11-01 11:07:50,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:07:50,575 INFO L225 Difference]: With dead ends: 98 [2021-11-01 11:07:50,575 INFO L226 Difference]: Without dead ends: 66 [2021-11-01 11:07:50,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 447.69ms TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-01 11:07:50,576 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2738.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.52ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 2857.12ms IncrementalHoareTripleChecker+Time [2021-11-01 11:07:50,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 438 Unknown, 0 Unchecked, 3.52ms Time], IncrementalHoareTripleChecker [4 Valid, 424 Invalid, 1 Unknown, 9 Unchecked, 2857.12ms Time] [2021-11-01 11:07:50,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-01 11:07:50,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2021-11-01 11:07:50,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 59 states have (on average 1.2542372881355932) internal successors, (74), 61 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:50,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2021-11-01 11:07:50,582 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 31 [2021-11-01 11:07:50,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:07:50,582 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2021-11-01 11:07:50,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:50,582 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2021-11-01 11:07:50,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-01 11:07:50,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:07:50,583 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] [2021-11-01 11:07:50,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-01 11:07:50,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 11:07:50,788 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:07:50,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:07:50,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1782998873, now seen corresponding path program 1 times [2021-11-01 11:07:50,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 11:07:50,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763111601] [2021-11-01 11:07:50,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:07:50,789 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 11:07:50,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 11:07:50,790 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 11:07:50,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-01 11:07:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:07:50,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-01 11:07:50,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 11:07:51,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:07:51,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 11:07:52,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:07:52,004 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 11:07:52,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763111601] [2021-11-01 11:07:52,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [763111601] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 11:07:52,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:07:52,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 10] imperfect sequences [] total 14 [2021-11-01 11:07:52,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152523745] [2021-11-01 11:07:52,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-01 11:07:52,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 11:07:52,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-01 11:07:52,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-01 11:07:52,005 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:07:54,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:07:56,332 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:07:58,349 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:08:00,371 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:08:01,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:08:01,217 INFO L93 Difference]: Finished difference Result 97 states and 114 transitions. [2021-11-01 11:08:01,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-01 11:08:01,218 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 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 31 [2021-11-01 11:08:01,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:08:01,218 INFO L225 Difference]: With dead ends: 97 [2021-11-01 11:08:01,218 INFO L226 Difference]: Without dead ends: 67 [2021-11-01 11:08:01,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 530.16ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-11-01 11:08:01,219 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8978.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.89ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 9145.55ms IncrementalHoareTripleChecker+Time [2021-11-01 11:08:01,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 388 Unknown, 0 Unchecked, 2.89ms Time], IncrementalHoareTripleChecker [3 Valid, 263 Invalid, 3 Unknown, 119 Unchecked, 9145.55ms Time] [2021-11-01 11:08:01,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-01 11:08:01,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2021-11-01 11:08:01,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 63 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:01,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2021-11-01 11:08:01,233 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 31 [2021-11-01 11:08:01,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:08:01,234 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2021-11-01 11:08:01,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:01,234 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2021-11-01 11:08:01,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-01 11:08:01,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:08:01,235 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] [2021-11-01 11:08:01,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-01 11:08:01,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 11:08:01,452 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:08:01,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:08:01,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1196192859, now seen corresponding path program 1 times [2021-11-01 11:08:01,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 11:08:01,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145312275] [2021-11-01 11:08:01,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:08:01,453 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 11:08:01,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 11:08:01,454 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 11:08:01,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-01 11:08:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:08:01,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-01 11:08:01,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 11:08:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:08:02,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 11:08:03,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:08:03,069 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 11:08:03,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145312275] [2021-11-01 11:08:03,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145312275] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 11:08:03,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:08:03,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 11] imperfect sequences [] total 15 [2021-11-01 11:08:03,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083991353] [2021-11-01 11:08:03,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-01 11:08:03,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 11:08:03,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-01 11:08:03,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-01 11:08:03,070 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:05,641 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:08:06,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:08:06,036 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2021-11-01 11:08:06,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-01 11:08:06,036 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 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 31 [2021-11-01 11:08:06,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:08:06,037 INFO L225 Difference]: With dead ends: 96 [2021-11-01 11:08:06,037 INFO L226 Difference]: Without dead ends: 68 [2021-11-01 11:08:06,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 732.30ms TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-11-01 11:08:06,038 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2776.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.16ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 2894.58ms IncrementalHoareTripleChecker+Time [2021-11-01 11:08:06,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 485 Unknown, 0 Unchecked, 3.16ms Time], IncrementalHoareTripleChecker [2 Valid, 420 Invalid, 1 Unknown, 62 Unchecked, 2894.58ms Time] [2021-11-01 11:08:06,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-01 11:08:06,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2021-11-01 11:08:06,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 65 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:06,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2021-11-01 11:08:06,043 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 31 [2021-11-01 11:08:06,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:08:06,044 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2021-11-01 11:08:06,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:06,044 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2021-11-01 11:08:06,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-01 11:08:06,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:08:06,045 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] [2021-11-01 11:08:06,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-01 11:08:06,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 11:08:06,250 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:08:06,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:08:06,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1897257437, now seen corresponding path program 1 times [2021-11-01 11:08:06,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 11:08:06,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539121283] [2021-11-01 11:08:06,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:08:06,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 11:08:06,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 11:08:06,252 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 11:08:06,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-01 11:08:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:08:06,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-01 11:08:06,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 11:08:06,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:08:06,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 11:08:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:08:08,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 11:08:08,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539121283] [2021-11-01 11:08:08,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539121283] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 11:08:08,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:08:08,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 12] imperfect sequences [] total 16 [2021-11-01 11:08:08,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647063019] [2021-11-01 11:08:08,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-01 11:08:08,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 11:08:08,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-01 11:08:08,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-11-01 11:08:08,088 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:10,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:08:10,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:08:10,673 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2021-11-01 11:08:10,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-01 11:08:10,673 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-01 11:08:10,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:08:10,674 INFO L225 Difference]: With dead ends: 95 [2021-11-01 11:08:10,674 INFO L226 Difference]: Without dead ends: 69 [2021-11-01 11:08:10,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 799.23ms TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-11-01 11:08:10,675 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2431.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.15ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 2501.38ms IncrementalHoareTripleChecker+Time [2021-11-01 11:08:10,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 248 Unknown, 0 Unchecked, 2.15ms Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 1 Unknown, 63 Unchecked, 2501.38ms Time] [2021-11-01 11:08:10,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-01 11:08:10,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-11-01 11:08:10,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 67 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:10,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 80 transitions. [2021-11-01 11:08:10,678 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 80 transitions. Word has length 31 [2021-11-01 11:08:10,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:08:10,678 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 80 transitions. [2021-11-01 11:08:10,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:10,678 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 80 transitions. [2021-11-01 11:08:10,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-01 11:08:10,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:08:10,679 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] [2021-11-01 11:08:10,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-01 11:08:10,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 11:08:10,888 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:08:10,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:08:10,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1717651489, now seen corresponding path program 1 times [2021-11-01 11:08:10,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 11:08:10,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658403595] [2021-11-01 11:08:10,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:08:10,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 11:08:10,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 11:08:10,891 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 11:08:10,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-01 11:08:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:08:10,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-01 11:08:10,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 11:08:11,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:08:11,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 11:08:11,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:08:11,682 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 11:08:11,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658403595] [2021-11-01 11:08:11,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658403595] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 11:08:11,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:08:11,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 6] imperfect sequences [] total 12 [2021-11-01 11:08:11,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449681258] [2021-11-01 11:08:11,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-01 11:08:11,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 11:08:11,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-01 11:08:11,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-01 11:08:11,692 INFO L87 Difference]: Start difference. First operand 68 states and 80 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:14,086 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:08:14,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:08:14,362 INFO L93 Difference]: Finished difference Result 94 states and 108 transitions. [2021-11-01 11:08:14,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-01 11:08:14,362 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-01 11:08:14,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:08:14,363 INFO L225 Difference]: With dead ends: 94 [2021-11-01 11:08:14,363 INFO L226 Difference]: Without dead ends: 70 [2021-11-01 11:08:14,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 444.31ms TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-01 11:08:14,364 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2445.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.99ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 2512.57ms IncrementalHoareTripleChecker+Time [2021-11-01 11:08:14,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 267 Unknown, 0 Unchecked, 1.99ms Time], IncrementalHoareTripleChecker [2 Valid, 202 Invalid, 1 Unknown, 62 Unchecked, 2512.57ms Time] [2021-11-01 11:08:14,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-01 11:08:14,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-11-01 11:08:14,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 69 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:14,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2021-11-01 11:08:14,368 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 31 [2021-11-01 11:08:14,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:08:14,369 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2021-11-01 11:08:14,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:14,369 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2021-11-01 11:08:14,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-01 11:08:14,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:08:14,370 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] [2021-11-01 11:08:14,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-01 11:08:14,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 11:08:14,576 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:08:14,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:08:14,576 INFO L85 PathProgramCache]: Analyzing trace with hash 57355873, now seen corresponding path program 1 times [2021-11-01 11:08:14,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 11:08:14,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071163347] [2021-11-01 11:08:14,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:08:14,577 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 11:08:14,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 11:08:14,578 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 11:08:14,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-01 11:08:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:08:14,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-01 11:08:14,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 11:08:14,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:08:14,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 11:08:15,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:08:15,220 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 11:08:15,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071163347] [2021-11-01 11:08:15,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071163347] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 11:08:15,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:08:15,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-01 11:08:15,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667279604] [2021-11-01 11:08:15,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-01 11:08:15,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 11:08:15,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-01 11:08:15,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-01 11:08:15,225 INFO L87 Difference]: Start difference. First operand 70 states and 82 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:17,527 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:08:17,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:08:17,776 INFO L93 Difference]: Finished difference Result 99 states and 112 transitions. [2021-11-01 11:08:17,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-01 11:08:17,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 31 [2021-11-01 11:08:17,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:08:17,777 INFO L225 Difference]: With dead ends: 99 [2021-11-01 11:08:17,777 INFO L226 Difference]: Without dead ends: 97 [2021-11-01 11:08:17,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 56.38ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-01 11:08:17,779 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2435.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.33ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2511.87ms IncrementalHoareTripleChecker+Time [2021-11-01 11:08:17,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 206 Unknown, 0 Unchecked, 2.33ms Time], IncrementalHoareTripleChecker [3 Valid, 202 Invalid, 1 Unknown, 0 Unchecked, 2511.87ms Time] [2021-11-01 11:08:17,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-01 11:08:17,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 76. [2021-11-01 11:08:17,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 75 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:17,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 89 transitions. [2021-11-01 11:08:17,783 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 89 transitions. Word has length 31 [2021-11-01 11:08:17,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:08:17,783 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 89 transitions. [2021-11-01 11:08:17,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:17,783 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 89 transitions. [2021-11-01 11:08:17,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-01 11:08:17,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:08:17,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-01 11:08:17,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-01 11:08:17,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 11:08:17,991 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:08:17,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:08:17,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1622485073, now seen corresponding path program 1 times [2021-11-01 11:08:17,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 11:08:17,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732594545] [2021-11-01 11:08:17,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:08:17,992 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 11:08:17,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 11:08:17,993 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 11:08:17,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-01 11:08:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:08:18,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-01 11:08:18,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 11:08:18,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:08:18,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 11:08:18,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:08:18,453 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 11:08:18,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732594545] [2021-11-01 11:08:18,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732594545] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 11:08:18,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:08:18,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-01 11:08:18,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856910455] [2021-11-01 11:08:18,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-01 11:08:18,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 11:08:18,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-01 11:08:18,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-01 11:08:18,455 INFO L87 Difference]: Start difference. First operand 76 states and 89 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:20,231 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:08:22,253 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:08:24,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:08:26,293 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:08:26,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:08:26,534 INFO L93 Difference]: Finished difference Result 127 states and 149 transitions. [2021-11-01 11:08:26,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-01 11:08:26,535 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 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 31 [2021-11-01 11:08:26,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:08:26,535 INFO L225 Difference]: With dead ends: 127 [2021-11-01 11:08:26,535 INFO L226 Difference]: Without dead ends: 83 [2021-11-01 11:08:26,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 190.37ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-01 11:08:26,536 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7877.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.43ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 8015.38ms IncrementalHoareTripleChecker+Time [2021-11-01 11:08:26,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 359 Unknown, 0 Unchecked, 2.43ms Time], IncrementalHoareTripleChecker [7 Valid, 287 Invalid, 3 Unknown, 62 Unchecked, 8015.38ms Time] [2021-11-01 11:08:26,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-01 11:08:26,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 76. [2021-11-01 11:08:26,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 75 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:26,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2021-11-01 11:08:26,541 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 31 [2021-11-01 11:08:26,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:08:26,541 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2021-11-01 11:08:26,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:26,541 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2021-11-01 11:08:26,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-01 11:08:26,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:08:26,542 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] [2021-11-01 11:08:26,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-01 11:08:26,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 11:08:26,753 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:08:26,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:08:26,754 INFO L85 PathProgramCache]: Analyzing trace with hash 2014625500, now seen corresponding path program 1 times [2021-11-01 11:08:26,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 11:08:26,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182184393] [2021-11-01 11:08:26,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:08:26,755 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 11:08:26,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 11:08:26,755 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 11:08:26,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-01 11:08:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:08:26,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-01 11:08:26,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 11:08:27,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:08:27,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 11:08:27,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:08:27,371 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 11:08:27,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182184393] [2021-11-01 11:08:27,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182184393] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 11:08:27,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:08:27,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-01 11:08:27,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135813022] [2021-11-01 11:08:27,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-01 11:08:27,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 11:08:27,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-01 11:08:27,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-01 11:08:27,373 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:29,413 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:08:31,440 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:08:31,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:08:31,615 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2021-11-01 11:08:31,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-01 11:08:31,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 32 [2021-11-01 11:08:31,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:08:31,616 INFO L225 Difference]: With dead ends: 81 [2021-11-01 11:08:31,616 INFO L226 Difference]: Without dead ends: 79 [2021-11-01 11:08:31,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 54.73ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-01 11:08:31,617 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 50 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4111.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.71ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4203.92ms IncrementalHoareTripleChecker+Time [2021-11-01 11:08:31,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 0 Invalid, 163 Unknown, 0 Unchecked, 1.71ms Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 1 Unknown, 0 Unchecked, 4203.92ms Time] [2021-11-01 11:08:31,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-01 11:08:31,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2021-11-01 11:08:31,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 66 states have (on average 1.196969696969697) internal successors, (79), 67 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:31,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2021-11-01 11:08:31,620 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 32 [2021-11-01 11:08:31,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:08:31,620 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2021-11-01 11:08:31,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:31,621 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2021-11-01 11:08:31,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-01 11:08:31,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:08:31,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-01 11:08:31,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-01 11:08:31,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 11:08:31,826 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:08:31,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:08:31,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1925927232, now seen corresponding path program 1 times [2021-11-01 11:08:31,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 11:08:31,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [128521354] [2021-11-01 11:08:31,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:08:31,827 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 11:08:31,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 11:08:31,828 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 11:08:31,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-01 11:08:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:08:31,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-01 11:08:31,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 11:08:32,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:08:32,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 11:08:32,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:08:32,368 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 11:08:32,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [128521354] [2021-11-01 11:08:32,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [128521354] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 11:08:32,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:08:32,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 9 [2021-11-01 11:08:32,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497888913] [2021-11-01 11:08:32,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-01 11:08:32,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 11:08:32,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-01 11:08:32,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-01 11:08:32,370 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:34,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:08:35,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:08:35,276 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2021-11-01 11:08:35,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-01 11:08:35,276 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 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 36 [2021-11-01 11:08:35,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:08:35,277 INFO L225 Difference]: With dead ends: 96 [2021-11-01 11:08:35,277 INFO L226 Difference]: Without dead ends: 81 [2021-11-01 11:08:35,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 325.31ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-01 11:08:35,278 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 90 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2622.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.10ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 2712.79ms IncrementalHoareTripleChecker+Time [2021-11-01 11:08:35,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 0 Invalid, 290 Unknown, 0 Unchecked, 3.10ms Time], IncrementalHoareTripleChecker [2 Valid, 285 Invalid, 1 Unknown, 2 Unchecked, 2712.79ms Time] [2021-11-01 11:08:35,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-01 11:08:35,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2021-11-01 11:08:35,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 74 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:35,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2021-11-01 11:08:35,281 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 36 [2021-11-01 11:08:35,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:08:35,281 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2021-11-01 11:08:35,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:35,281 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2021-11-01 11:08:35,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-01 11:08:35,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:08:35,282 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] [2021-11-01 11:08:35,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-01 11:08:35,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 11:08:35,488 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:08:35,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:08:35,488 INFO L85 PathProgramCache]: Analyzing trace with hash 192927141, now seen corresponding path program 1 times [2021-11-01 11:08:35,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 11:08:35,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890308604] [2021-11-01 11:08:35,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:08:35,489 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 11:08:35,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 11:08:35,490 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 11:08:35,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-01 11:08:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:08:35,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-01 11:08:35,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 11:08:36,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:08:36,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 11:08:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:08:36,260 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 11:08:36,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890308604] [2021-11-01 11:08:36,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890308604] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 11:08:36,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:08:36,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 4] imperfect sequences [] total 10 [2021-11-01 11:08:36,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658269746] [2021-11-01 11:08:36,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-01 11:08:36,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 11:08:36,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-01 11:08:36,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-01 11:08:36,261 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:36,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:08:36,792 INFO L93 Difference]: Finished difference Result 113 states and 134 transitions. [2021-11-01 11:08:36,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-01 11:08:36,792 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-01 11:08:36,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:08:36,793 INFO L225 Difference]: With dead ends: 113 [2021-11-01 11:08:36,793 INFO L226 Difference]: Without dead ends: 94 [2021-11-01 11:08:36,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 404.15ms TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-01 11:08:36,793 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 395.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.71ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 175 IncrementalHoareTripleChecker+Unchecked, 440.91ms IncrementalHoareTripleChecker+Time [2021-11-01 11:08:36,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 398 Unknown, 0 Unchecked, 1.71ms Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 0 Unknown, 175 Unchecked, 440.91ms Time] [2021-11-01 11:08:36,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-01 11:08:36,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 77. [2021-11-01 11:08:36,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 76 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:36,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2021-11-01 11:08:36,797 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 37 [2021-11-01 11:08:36,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:08:36,797 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2021-11-01 11:08:36,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:36,797 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2021-11-01 11:08:36,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-01 11:08:36,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:08:36,798 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] [2021-11-01 11:08:36,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-01 11:08:36,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 11:08:36,999 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:08:37,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:08:37,000 INFO L85 PathProgramCache]: Analyzing trace with hash 451092579, now seen corresponding path program 1 times [2021-11-01 11:08:37,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 11:08:37,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973584692] [2021-11-01 11:08:37,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:08:37,000 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 11:08:37,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 11:08:37,001 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 11:08:37,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-01 11:08:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:08:37,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-01 11:08:37,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 11:08:37,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:08:37,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 11:08:37,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:08:37,975 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 11:08:37,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973584692] [2021-11-01 11:08:37,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973584692] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 11:08:37,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:08:37,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 8] imperfect sequences [] total 15 [2021-11-01 11:08:37,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216154361] [2021-11-01 11:08:37,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-01 11:08:37,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 11:08:37,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-01 11:08:37,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-11-01 11:08:37,977 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:40,924 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:08:41,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:08:41,245 INFO L93 Difference]: Finished difference Result 129 states and 153 transitions. [2021-11-01 11:08:41,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-01 11:08:41,245 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 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 [2021-11-01 11:08:41,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:08:41,247 INFO L225 Difference]: With dead ends: 129 [2021-11-01 11:08:41,247 INFO L226 Difference]: Without dead ends: 93 [2021-11-01 11:08:41,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 922.98ms TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2021-11-01 11:08:41,248 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2721.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.98ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 2819.34ms IncrementalHoareTripleChecker+Time [2021-11-01 11:08:41,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 492 Unknown, 0 Unchecked, 2.98ms Time], IncrementalHoareTripleChecker [9 Valid, 362 Invalid, 1 Unknown, 120 Unchecked, 2819.34ms Time] [2021-11-01 11:08:41,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-01 11:08:41,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2021-11-01 11:08:41,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 85 states have (on average 1.2) internal successors, (102), 86 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:41,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2021-11-01 11:08:41,251 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 102 transitions. Word has length 37 [2021-11-01 11:08:41,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:08:41,252 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 102 transitions. [2021-11-01 11:08:41,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:41,252 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 102 transitions. [2021-11-01 11:08:41,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-01 11:08:41,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:08:41,253 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] [2021-11-01 11:08:41,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-01 11:08:41,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 11:08:41,466 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:08:41,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:08:41,467 INFO L85 PathProgramCache]: Analyzing trace with hash 317079073, now seen corresponding path program 1 times [2021-11-01 11:08:41,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 11:08:41,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960010427] [2021-11-01 11:08:41,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:08:41,467 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 11:08:41,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 11:08:41,468 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 11:08:41,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-01 11:08:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:08:41,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-01 11:08:41,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 11:08:42,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:08:42,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 11:08:42,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:08:42,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 11:08:42,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960010427] [2021-11-01 11:08:42,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960010427] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 11:08:42,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:08:42,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 9] imperfect sequences [] total 16 [2021-11-01 11:08:42,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299501080] [2021-11-01 11:08:42,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-01 11:08:42,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 11:08:42,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-01 11:08:42,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-11-01 11:08:42,691 INFO L87 Difference]: Start difference. First operand 87 states and 102 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 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) [2021-11-01 11:08:45,757 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:08:46,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:08:46,162 INFO L93 Difference]: Finished difference Result 136 states and 159 transitions. [2021-11-01 11:08:46,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-01 11:08:46,162 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 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 37 [2021-11-01 11:08:46,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:08:46,162 INFO L225 Difference]: With dead ends: 136 [2021-11-01 11:08:46,163 INFO L226 Difference]: Without dead ends: 102 [2021-11-01 11:08:46,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1037.09ms TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2021-11-01 11:08:46,163 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2918.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.42ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 3033.46ms IncrementalHoareTripleChecker+Time [2021-11-01 11:08:46,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 529 Unknown, 0 Unchecked, 3.42ms Time], IncrementalHoareTripleChecker [13 Valid, 453 Invalid, 1 Unknown, 62 Unchecked, 3033.46ms Time] [2021-11-01 11:08:46,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-11-01 11:08:46,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 89. [2021-11-01 11:08:46,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.1954022988505748) internal successors, (104), 88 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:08:46,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 104 transitions. [2021-11-01 11:08:46,166 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 104 transitions. Word has length 37 [2021-11-01 11:08:46,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:08:46,167 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 104 transitions. [2021-11-01 11:08:46,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 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) [2021-11-01 11:08:46,167 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 104 transitions. [2021-11-01 11:08:46,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-01 11:08:46,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:08:46,168 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] [2021-11-01 11:08:46,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-01 11:08:46,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 11:08:46,376 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:08:46,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:08:46,376 INFO L85 PathProgramCache]: Analyzing trace with hash 535933791, now seen corresponding path program 1 times [2021-11-01 11:08:46,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 11:08:46,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138995469] [2021-11-01 11:08:46,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:08:46,377 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 11:08:46,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 11:08:46,377 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 11:08:46,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-01 11:08:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:08:46,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-01 11:08:46,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 11:08:47,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:08:47,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 11:08:47,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:08:47,731 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 11:08:47,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138995469] [2021-11-01 11:08:47,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138995469] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 11:08:47,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:08:47,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 17 [2021-11-01 11:08:47,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204803385] [2021-11-01 11:08:47,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-01 11:08:47,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 11:08:47,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-01 11:08:47,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-11-01 11:08:47,732 INFO L87 Difference]: Start difference. First operand 89 states and 104 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 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) [2021-11-01 11:08:50,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:08:52,757 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:08:54,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:08:56,793 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:08:58,812 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:09:00,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:09:02,853 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:09:04,865 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:09:06,880 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:09:07,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:09:07,322 INFO L93 Difference]: Finished difference Result 137 states and 159 transitions. [2021-11-01 11:09:07,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-01 11:09:07,323 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 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 37 [2021-11-01 11:09:07,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:09:07,323 INFO L225 Difference]: With dead ends: 137 [2021-11-01 11:09:07,323 INFO L226 Difference]: Without dead ends: 105 [2021-11-01 11:09:07,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1109.37ms TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2021-11-01 11:09:07,324 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 12 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18885.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.08ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 19139.97ms IncrementalHoareTripleChecker+Time [2021-11-01 11:09:07,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 572 Unknown, 0 Unchecked, 3.08ms Time], IncrementalHoareTripleChecker [12 Valid, 489 Invalid, 8 Unknown, 63 Unchecked, 19139.97ms Time] [2021-11-01 11:09:07,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-01 11:09:07,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2021-11-01 11:09:07,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 89 states have (on average 1.1910112359550562) internal successors, (106), 90 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:09:07,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2021-11-01 11:09:07,328 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 37 [2021-11-01 11:09:07,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:09:07,328 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2021-11-01 11:09:07,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 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) [2021-11-01 11:09:07,328 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2021-11-01 11:09:07,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-01 11:09:07,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:09:07,329 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] [2021-11-01 11:09:07,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-01 11:09:07,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 11:09:07,540 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:09:07,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:09:07,540 INFO L85 PathProgramCache]: Analyzing trace with hash -281714659, now seen corresponding path program 1 times [2021-11-01 11:09:07,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 11:09:07,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863330773] [2021-11-01 11:09:07,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:09:07,541 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 11:09:07,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 11:09:07,541 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 11:09:07,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-01 11:09:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:09:07,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-01 11:09:07,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 11:09:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:09:08,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 11:09:08,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:09:08,476 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 11:09:08,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863330773] [2021-11-01 11:09:08,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1863330773] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 11:09:08,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:09:08,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 9] imperfect sequences [] total 17 [2021-11-01 11:09:08,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834978581] [2021-11-01 11:09:08,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-01 11:09:08,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 11:09:08,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-01 11:09:08,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-01 11:09:08,478 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:09:11,338 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:09:13,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:09:15,386 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:09:17,404 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:09:19,421 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:09:21,440 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:09:23,459 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:09:25,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:09:25,402 INFO L93 Difference]: Finished difference Result 138 states and 159 transitions. [2021-11-01 11:09:25,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-01 11:09:25,402 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-01 11:09:25,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:09:25,403 INFO L225 Difference]: With dead ends: 138 [2021-11-01 11:09:25,403 INFO L226 Difference]: Without dead ends: 108 [2021-11-01 11:09:25,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 923.04ms TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2021-11-01 11:09:25,404 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 12 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16215.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.41ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 16496.51ms IncrementalHoareTripleChecker+Time [2021-11-01 11:09:25,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 512 Unknown, 0 Unchecked, 3.41ms Time], IncrementalHoareTripleChecker [12 Valid, 433 Invalid, 6 Unknown, 61 Unchecked, 16496.51ms Time] [2021-11-01 11:09:25,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-01 11:09:25,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 93. [2021-11-01 11:09:25,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 91 states have (on average 1.1868131868131868) internal successors, (108), 92 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:09:25,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 108 transitions. [2021-11-01 11:09:25,406 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 108 transitions. Word has length 37 [2021-11-01 11:09:25,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:09:25,407 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 108 transitions. [2021-11-01 11:09:25,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:09:25,407 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 108 transitions. [2021-11-01 11:09:25,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-01 11:09:25,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:09:25,407 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] [2021-11-01 11:09:25,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-01 11:09:25,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 11:09:25,617 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:09:25,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:09:25,618 INFO L85 PathProgramCache]: Analyzing trace with hash 2019107931, now seen corresponding path program 1 times [2021-11-01 11:09:25,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 11:09:25,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505229490] [2021-11-01 11:09:25,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:09:25,618 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 11:09:25,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 11:09:25,619 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 11:09:25,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-01 11:09:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:09:25,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-01 11:09:25,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 11:09:26,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:09:26,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 11:09:26,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:09:26,693 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 11:09:26,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505229490] [2021-11-01 11:09:26,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505229490] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 11:09:26,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:09:26,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 9] imperfect sequences [] total 17 [2021-11-01 11:09:26,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736563326] [2021-11-01 11:09:26,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-01 11:09:26,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 11:09:26,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-01 11:09:26,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-01 11:09:26,694 INFO L87 Difference]: Start difference. First operand 93 states and 108 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:09:29,670 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:09:30,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:09:30,050 INFO L93 Difference]: Finished difference Result 139 states and 159 transitions. [2021-11-01 11:09:30,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-01 11:09:30,051 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-01 11:09:30,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:09:30,051 INFO L225 Difference]: With dead ends: 139 [2021-11-01 11:09:30,051 INFO L226 Difference]: Without dead ends: 111 [2021-11-01 11:09:30,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 981.37ms TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2021-11-01 11:09:30,052 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 45 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2808.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.34ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 2934.17ms IncrementalHoareTripleChecker+Time [2021-11-01 11:09:30,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 0 Invalid, 537 Unknown, 0 Unchecked, 2.34ms Time], IncrementalHoareTripleChecker [13 Valid, 413 Invalid, 1 Unknown, 110 Unchecked, 2934.17ms Time] [2021-11-01 11:09:30,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-01 11:09:30,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 95. [2021-11-01 11:09:30,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 93 states have (on average 1.1827956989247312) internal successors, (110), 94 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:09:30,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 110 transitions. [2021-11-01 11:09:30,055 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 110 transitions. Word has length 37 [2021-11-01 11:09:30,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:09:30,055 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 110 transitions. [2021-11-01 11:09:30,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:09:30,056 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 110 transitions. [2021-11-01 11:09:30,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-01 11:09:30,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:09:30,056 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] [2021-11-01 11:09:30,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-01 11:09:30,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 11:09:30,263 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:09:30,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:09:30,264 INFO L85 PathProgramCache]: Analyzing trace with hash 998039577, now seen corresponding path program 1 times [2021-11-01 11:09:30,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 11:09:30,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774501352] [2021-11-01 11:09:30,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:09:30,264 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 11:09:30,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 11:09:30,267 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 11:09:30,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-01 11:09:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:09:30,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-01 11:09:30,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 11:09:30,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:09:30,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 11:09:31,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:09:31,338 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 11:09:31,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774501352] [2021-11-01 11:09:31,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774501352] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 11:09:31,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:09:31,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 9] imperfect sequences [] total 17 [2021-11-01 11:09:31,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050906968] [2021-11-01 11:09:31,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-01 11:09:31,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 11:09:31,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-01 11:09:31,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-01 11:09:31,340 INFO L87 Difference]: Start difference. First operand 95 states and 110 transitions. Second operand has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:09:34,214 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:09:34,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:09:34,637 INFO L93 Difference]: Finished difference Result 139 states and 158 transitions. [2021-11-01 11:09:34,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-01 11:09:34,638 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 0 states have call successors, (0), 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 [2021-11-01 11:09:34,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:09:34,638 INFO L225 Difference]: With dead ends: 139 [2021-11-01 11:09:34,638 INFO L226 Difference]: Without dead ends: 113 [2021-11-01 11:09:34,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 931.01ms TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2021-11-01 11:09:34,639 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2816.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.06ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 2932.59ms IncrementalHoareTripleChecker+Time [2021-11-01 11:09:34,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 409 Unknown, 0 Unchecked, 2.06ms Time], IncrementalHoareTripleChecker [9 Valid, 384 Invalid, 1 Unknown, 15 Unchecked, 2932.59ms Time] [2021-11-01 11:09:34,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-01 11:09:34,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2021-11-01 11:09:34,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 110 states have (on average 1.1636363636363636) internal successors, (128), 111 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:09:34,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2021-11-01 11:09:34,642 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 37 [2021-11-01 11:09:34,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:09:34,643 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2021-11-01 11:09:34,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:09:34,644 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2021-11-01 11:09:34,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-01 11:09:34,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:09:34,644 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] [2021-11-01 11:09:34,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-01 11:09:34,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 11:09:34,852 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:09:34,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:09:34,852 INFO L85 PathProgramCache]: Analyzing trace with hash -13077673, now seen corresponding path program 1 times [2021-11-01 11:09:34,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 11:09:34,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151504634] [2021-11-01 11:09:34,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:09:34,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 11:09:34,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 11:09:34,855 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 11:09:34,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-01 11:09:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:09:34,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-01 11:09:34,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 11:09:35,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:09:35,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 11:09:35,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:09:35,300 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 11:09:35,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151504634] [2021-11-01 11:09:35,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151504634] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 11:09:35,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:09:35,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 3] imperfect sequences [] total 7 [2021-11-01 11:09:35,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980837561] [2021-11-01 11:09:35,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-01 11:09:35,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 11:09:35,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-01 11:09:35,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-01 11:09:35,301 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:09:37,635 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:09:37,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:09:37,754 INFO L93 Difference]: Finished difference Result 150 states and 174 transitions. [2021-11-01 11:09:37,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-01 11:09:37,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 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 [2021-11-01 11:09:37,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:09:37,756 INFO L225 Difference]: With dead ends: 150 [2021-11-01 11:09:37,756 INFO L226 Difference]: Without dead ends: 95 [2021-11-01 11:09:37,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 211.85ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-01 11:09:37,757 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2315.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.63ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 2381.58ms IncrementalHoareTripleChecker+Time [2021-11-01 11:09:37,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 222 Unknown, 0 Unchecked, 0.63ms Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 1 Unknown, 59 Unchecked, 2381.58ms Time] [2021-11-01 11:09:37,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-01 11:09:37,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-11-01 11:09:37,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 93 states have (on average 1.1720430107526882) internal successors, (109), 94 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:09:37,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2021-11-01 11:09:37,761 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 37 [2021-11-01 11:09:37,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:09:37,761 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2021-11-01 11:09:37,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:09:37,761 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2021-11-01 11:09:37,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-01 11:09:37,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:09:37,762 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] [2021-11-01 11:09:37,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-01 11:09:37,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 11:09:37,968 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:09:37,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:09:37,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1284407490, now seen corresponding path program 1 times [2021-11-01 11:09:37,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 11:09:37,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664782241] [2021-11-01 11:09:37,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:09:37,969 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 11:09:37,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 11:09:37,971 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 11:09:37,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-01 11:09:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 11:09:38,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-01 11:09:38,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 11:09:38,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:09:38,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 11:09:38,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 11:09:38,471 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 11:09:38,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664782241] [2021-11-01 11:09:38,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664782241] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 11:09:38,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 11:09:38,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 9 [2021-11-01 11:09:38,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285908495] [2021-11-01 11:09:38,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-01 11:09:38,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 11:09:38,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-01 11:09:38,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-01 11:09:38,473 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:09:40,884 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-01 11:09:41,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 11:09:41,236 INFO L93 Difference]: Finished difference Result 124 states and 138 transitions. [2021-11-01 11:09:41,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-01 11:09:41,237 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 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 38 [2021-11-01 11:09:41,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 11:09:41,237 INFO L225 Difference]: With dead ends: 124 [2021-11-01 11:09:41,237 INFO L226 Difference]: Without dead ends: 90 [2021-11-01 11:09:41,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 311.42ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-01 11:09:41,238 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 195 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2492.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.63ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 2578.64ms IncrementalHoareTripleChecker+Time [2021-11-01 11:09:41,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 0 Invalid, 334 Unknown, 0 Unchecked, 2.63ms Time], IncrementalHoareTripleChecker [2 Valid, 225 Invalid, 1 Unknown, 106 Unchecked, 2578.64ms Time] [2021-11-01 11:09:41,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-01 11:09:41,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 69. [2021-11-01 11:09:41,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 67 states have (on average 1.208955223880597) internal successors, (81), 68 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:09:41,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2021-11-01 11:09:41,241 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 38 [2021-11-01 11:09:41,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 11:09:41,241 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2021-11-01 11:09:41,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 11:09:41,241 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2021-11-01 11:09:41,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-01 11:09:41,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 11:09:41,242 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] [2021-11-01 11:09:41,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-01 11:09:41,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 11:09:41,448 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 11:09:41,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 11:09:41,448 INFO L85 PathProgramCache]: Analyzing trace with hash -649514281, now seen corresponding path program 1 times [2021-11-01 11:09:41,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 11:09:41,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981220063] [2021-11-01 11:09:41,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 11:09:41,449 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 11:09:41,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 11:09:41,450 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 11:09:41,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-01 11:09:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-01 11:09:41,622 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-01 11:09:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-01 11:09:41,817 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-01 11:09:41,818 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-01 11:09:41,818 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-01 11:09:41,820 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-01 11:09:41,820 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-01 11:09:41,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-01 11:09:42,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 11:09:42,035 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-01 11:09:42,038 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-01 11:09:42,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.11 11:09:42 BoogieIcfgContainer [2021-11-01 11:09:42,093 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-01 11:09:42,094 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-01 11:09:42,094 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-01 11:09:42,094 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-01 11:09:42,094 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 11:07:35" (3/4) ... [2021-11-01 11:09:42,096 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-01 11:09:42,130 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-11-01 11:09:42,132 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-01 11:09:42,133 INFO L158 Benchmark]: Toolchain (without parser) took 128157.39ms. Allocated memory was 56.6MB in the beginning and 98.6MB in the end (delta: 41.9MB). Free memory was 29.7MB in the beginning and 31.7MB in the end (delta: -2.0MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. [2021-11-01 11:09:42,133 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 56.6MB. Free memory was 38.9MB in the beginning and 38.8MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-01 11:09:42,133 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1164.19ms. Allocated memory was 56.6MB in the beginning and 98.6MB in the end (delta: 41.9MB). Free memory was 29.5MB in the beginning and 61.0MB in the end (delta: -31.5MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. [2021-11-01 11:09:42,133 INFO L158 Benchmark]: Boogie Procedure Inliner took 98.84ms. Allocated memory is still 98.6MB. Free memory was 61.0MB in the beginning and 55.9MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-01 11:09:42,134 INFO L158 Benchmark]: Boogie Preprocessor took 37.75ms. Allocated memory is still 98.6MB. Free memory was 55.9MB in the beginning and 52.6MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-01 11:09:42,134 INFO L158 Benchmark]: RCFGBuilder took 377.86ms. Allocated memory is still 98.6MB. Free memory was 52.6MB in the beginning and 55.0MB in the end (delta: -2.4MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2021-11-01 11:09:42,134 INFO L158 Benchmark]: TraceAbstraction took 126435.53ms. Allocated memory is still 98.6MB. Free memory was 54.6MB in the beginning and 37.5MB in the end (delta: 17.1MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. [2021-11-01 11:09:42,135 INFO L158 Benchmark]: Witness Printer took 38.74ms. Allocated memory is still 98.6MB. Free memory was 37.5MB in the beginning and 31.7MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-01 11:09:42,136 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 56.6MB. Free memory was 38.9MB in the beginning and 38.8MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1164.19ms. Allocated memory was 56.6MB in the beginning and 98.6MB in the end (delta: 41.9MB). Free memory was 29.5MB in the beginning and 61.0MB in the end (delta: -31.5MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 98.84ms. Allocated memory is still 98.6MB. Free memory was 61.0MB in the beginning and 55.9MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.75ms. Allocated memory is still 98.6MB. Free memory was 55.9MB in the beginning and 52.6MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 377.86ms. Allocated memory is still 98.6MB. Free memory was 52.6MB in the beginning and 55.0MB in the end (delta: -2.4MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. * TraceAbstraction took 126435.53ms. Allocated memory is still 98.6MB. Free memory was 54.6MB in the beginning and 37.5MB in the end (delta: 17.1MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. * Witness Printer took 38.74ms. Allocated memory is still 98.6MB. Free memory was 37.5MB in the beginning and 31.7MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 223]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L5937] short d1[160]; [L5938] short d2[160]; [L5939] int c = __VERIFIER_nondet_int(); [L5940] unsigned size = __VERIFIER_nondet_uint(); [L211] COND FALSE !(!cond) [L211] COND FALSE !(!cond) [L5871] COND TRUE n > 0 [L5872] char *sp = (char *)s; [L5873] unsigned long i = 0; [L5873] COND TRUE i < n [L5874] sp[i] = c [L5873] i++ [L5873] COND FALSE !(i < n) [L5876] return s; [L211] COND FALSE !(!cond) [L5883] size_t num_uint64s = n >> 3; [L5884] size_t rem = n & 0x7; [L5886] uint8_t *d = (uint8_t *)dst; [L5890] case 7: [L5892] case 6: [L5894] case 5: [L5896] case 4: [L5898] case 3: [L5900] case 2: [L5902] case 1: [L5903] d[0] = c [L5906] d += rem [L5908] uint64_t compounded = 0; [L5909] COND FALSE !(num_uint64s > 0 && c != 0) [L5921] size_t i = 0; [L5921] COND FALSE !(i < num_uint64s) [L5925] return dst; [L5908] uint64_t compounded = 0; [L5925] return dst; [L223] COND FALSE !(!cond) [L5655-L5658] COND TRUE len > 0 && a != ((void *)0) && b != ((void *)0) [L266] return __VERIFIER_nondet_ulong(); [L5660] size_t i = nondet_uint64_t(); [L211] COND FALSE !(!cond) [L5664] a[i] [L5664] b[i] [L223] COND TRUE !cond [L223] reach_error() - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 57 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 126328.44ms, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 18.75ms, AutomataDifference: 101705.28ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 7.42ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 36 mSolverCounterUnknown, 739 SdHoareTripleChecker+Valid, 97713.42ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 739 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 95312.94ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1278 IncrementalHoareTripleChecker+Unchecked, 4720 mSDsCounter, 108 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6330 IncrementalHoareTripleChecker+Invalid, 7752 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 108 mSolverCounterUnsat, 0 mSDtfsCounter, 6330 mSolverCounterSat, 55.64ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1461 GetRequests, 1158 SyntacticMatches, 18 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 11200.72ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=19, InterpolantAutomatonStates: 225, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 85.53ms AutomataMinimizationTime, 21 MinimizatonAttempts, 169 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 254.94ms SsaConstructionTime, 1262.53ms SatisfiabilityAnalysisTime, 17334.77ms InterpolantComputationTime, 751 NumberOfCodeBlocks, 751 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1382 ConstructedInterpolants, 152 QuantifiedInterpolants, 7778 SizeOfPredicates, 159 NumberOfNonLiveVariables, 2978 ConjunctsInSsa, 222 ConjunctsInUnsatCore, 42 InterpolantComputations, 42 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-01 11:09:42,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...