./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 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_override_0_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 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-16 21:55:50,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-16 21:55:50,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-16 21:55:50,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-16 21:55:50,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-16 21:55:50,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-16 21:55:50,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-16 21:55:50,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-16 21:55:50,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-16 21:55:50,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-16 21:55:50,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-16 21:55:50,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-16 21:55:50,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-16 21:55:50,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-16 21:55:50,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-16 21:55:50,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-16 21:55:50,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-16 21:55:50,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-16 21:55:50,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-16 21:55:50,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-16 21:55:50,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-16 21:55:50,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-16 21:55:50,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-16 21:55:50,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-16 21:55:50,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-16 21:55:50,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-16 21:55:50,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-16 21:55:50,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-16 21:55:50,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-16 21:55:50,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-16 21:55:50,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-16 21:55:50,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-16 21:55:50,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-16 21:55:50,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-16 21:55:50,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-16 21:55:50,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-16 21:55:50,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-16 21:55:50,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-16 21:55:50,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-16 21:55:50,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-16 21:55:50,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-16 21:55:50,238 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-16 21:55:50,259 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-16 21:55:50,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-16 21:55:50,260 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-16 21:55:50,260 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-16 21:55:50,261 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-16 21:55:50,261 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-16 21:55:50,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-16 21:55:50,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-16 21:55:50,262 INFO L138 SettingsManager]: * Use SBE=true [2021-11-16 21:55:50,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-16 21:55:50,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-16 21:55:50,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-16 21:55:50,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-16 21:55:50,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-16 21:55:50,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-16 21:55:50,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-16 21:55:50,263 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-16 21:55:50,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-16 21:55:50,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-16 21:55:50,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-16 21:55:50,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-16 21:55:50,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 21:55:50,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-16 21:55:50,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-16 21:55:50,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-16 21:55:50,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-16 21:55:50,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-16 21:55:50,266 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-16 21:55:50,266 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-16 21:55:50,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-16 21:55:50,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-16 21:55:50,266 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c [2021-11-16 21:55:50,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-16 21:55:50,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-16 21:55:50,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-16 21:55:50,479 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-16 21:55:50,479 INFO L275 PluginConnector]: CDTParser initialized [2021-11-16 21:55:50,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-11-16 21:55:50,529 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efdb3170e/fadcfe063a5446288dcb40d897a79743/FLAG30567fd64 [2021-11-16 21:55:51,019 INFO L306 CDTParser]: Found 1 translation units. [2021-11-16 21:55:51,019 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-11-16 21:55:51,051 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efdb3170e/fadcfe063a5446288dcb40d897a79743/FLAG30567fd64 [2021-11-16 21:55:51,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efdb3170e/fadcfe063a5446288dcb40d897a79743 [2021-11-16 21:55:51,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-16 21:55:51,318 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-16 21:55:51,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-16 21:55:51,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-16 21:55:51,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-16 21:55:51,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:55:51" (1/1) ... [2021-11-16 21:55:51,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@602c7ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:51, skipping insertion in model container [2021-11-16 21:55:51,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:55:51" (1/1) ... [2021-11-16 21:55:51,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-16 21:55:51,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-16 21:55:51,594 WARN L230 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_override_0_harness.i[4491,4504] [2021-11-16 21:55:51,599 WARN L230 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_override_0_harness.i[4551,4564] [2021-11-16 21:55:51,612 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-16 21:55:51,617 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-16 21:55:52,057 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,057 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,059 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,060 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,061 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,075 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,075 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,077 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,077 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,079 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,079 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,080 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,080 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,194 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-16 21:55:52,195 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-16 21:55:52,196 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-16 21:55:52,197 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-16 21:55:52,198 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-16 21:55:52,198 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-16 21:55:52,199 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-16 21:55:52,203 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-16 21:55:52,204 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-16 21:55:52,206 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-16 21:55:52,245 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 21:55:52,254 INFO L203 MainTranslator]: Completed pre-run [2021-11-16 21:55:52,263 WARN L230 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_override_0_harness.i[4491,4504] [2021-11-16 21:55:52,266 WARN L230 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_override_0_harness.i[4551,4564] [2021-11-16 21:55:52,268 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-16 21:55:52,270 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-16 21:55:52,308 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,308 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,309 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,309 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,310 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,317 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,317 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,318 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,318 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,319 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,320 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,320 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,320 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:52,362 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-16 21:55:52,363 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-16 21:55:52,364 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-16 21:55:52,365 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-16 21:55:52,366 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-16 21:55:52,366 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-16 21:55:52,367 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-16 21:55:52,368 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-16 21:55:52,369 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-16 21:55:52,369 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-16 21:55:52,402 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 21:55:52,498 INFO L208 MainTranslator]: Completed translation [2021-11-16 21:55:52,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:52 WrapperNode [2021-11-16 21:55:52,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-16 21:55:52,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-16 21:55:52,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-16 21:55:52,500 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-16 21:55:52,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:52" (1/1) ... [2021-11-16 21:55:52,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:52" (1/1) ... [2021-11-16 21:55:52,610 INFO L137 Inliner]: procedures = 594, calls = 611, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 85 [2021-11-16 21:55:52,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-16 21:55:52,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-16 21:55:52,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-16 21:55:52,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-16 21:55:52,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:52" (1/1) ... [2021-11-16 21:55:52,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:52" (1/1) ... [2021-11-16 21:55:52,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:52" (1/1) ... [2021-11-16 21:55:52,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:52" (1/1) ... [2021-11-16 21:55:52,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:52" (1/1) ... [2021-11-16 21:55:52,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:52" (1/1) ... [2021-11-16 21:55:52,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:52" (1/1) ... [2021-11-16 21:55:52,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-16 21:55:52,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-16 21:55:52,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-16 21:55:52,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-16 21:55:52,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:52" (1/1) ... [2021-11-16 21:55:52,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 21:55:52,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:55:52,696 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) [2021-11-16 21:55:52,719 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 [2021-11-16 21:55:52,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-16 21:55:52,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-16 21:55:52,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-16 21:55:52,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-16 21:55:52,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-16 21:55:52,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-16 21:55:52,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-16 21:55:52,738 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-16 21:55:52,739 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-16 21:55:52,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-16 21:55:52,739 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2021-11-16 21:55:52,740 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2021-11-16 21:55:52,740 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-16 21:55:52,740 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-16 21:55:52,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-16 21:55:52,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-16 21:55:52,940 INFO L236 CfgBuilder]: Building ICFG [2021-11-16 21:55:52,941 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-16 21:55:53,066 INFO L277 CfgBuilder]: Performing block encoding [2021-11-16 21:55:53,071 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-16 21:55:53,072 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-16 21:55:53,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 09:55:53 BoogieIcfgContainer [2021-11-16 21:55:53,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-16 21:55:53,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-16 21:55:53,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-16 21:55:53,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-16 21:55:53,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:55:51" (1/3) ... [2021-11-16 21:55:53,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d841b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:55:53, skipping insertion in model container [2021-11-16 21:55:53,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:52" (2/3) ... [2021-11-16 21:55:53,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d841b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:55:53, skipping insertion in model container [2021-11-16 21:55:53,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 09:55:53" (3/3) ... [2021-11-16 21:55:53,087 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_override_0_harness.i [2021-11-16 21:55:53,092 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-16 21:55:53,093 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-16 21:55:53,138 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-16 21:55:53,143 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 [2021-11-16 21:55:53,143 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-16 21:55:53,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-16 21:55:53,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-16 21:55:53,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:55:53,165 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:55:53,165 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:55:53,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:55:53,183 INFO L85 PathProgramCache]: Analyzing trace with hash 16590849, now seen corresponding path program 1 times [2021-11-16 21:55:53,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:55:53,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346513482] [2021-11-16 21:55:53,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:55:53,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:55:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:55:53,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:55:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:55:53,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-16 21:55:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:55:53,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-16 21:55:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:55:53,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-16 21:55:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:55:53,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-16 21:55:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:55:53,516 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-16 21:55:53,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:55:53,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346513482] [2021-11-16 21:55:53,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346513482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:55:53,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:55:53,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-16 21:55:53,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208058222] [2021-11-16 21:55:53,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:55:53,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-16 21:55:53,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:55:53,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-16 21:55:53,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-16 21:55:53,545 INFO L87 Difference]: Start difference. First operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-16 21:55:53,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:55:53,567 INFO L93 Difference]: Finished difference Result 117 states and 167 transitions. [2021-11-16 21:55:53,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-16 21:55:53,568 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2021-11-16 21:55:53,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:55:53,574 INFO L225 Difference]: With dead ends: 117 [2021-11-16 21:55:53,574 INFO L226 Difference]: Without dead ends: 52 [2021-11-16 21:55:53,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-16 21:55:53,578 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-16 21:55:53,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-16 21:55:53,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-16 21:55:53,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-11-16 21:55:53,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-16 21:55:53,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2021-11-16 21:55:53,611 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 36 [2021-11-16 21:55:53,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:55:53,612 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2021-11-16 21:55:53,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-16 21:55:53,612 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2021-11-16 21:55:53,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-16 21:55:53,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:55:53,614 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:55:53,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-16 21:55:53,614 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:55:53,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:55:53,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1271235587, now seen corresponding path program 1 times [2021-11-16 21:55:53,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:55:53,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150743966] [2021-11-16 21:55:53,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:55:53,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:55:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:55:53,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:55:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:55:53,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-16 21:55:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:55:53,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-16 21:55:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:55:53,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-16 21:55:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:55:54,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-16 21:55:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:55:54,030 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-16 21:55:54,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:55:54,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150743966] [2021-11-16 21:55:54,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150743966] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 21:55:54,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437053459] [2021-11-16 21:55:54,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:55:54,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:55:54,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:55:54,034 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:55:54,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-16 21:55:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:55:54,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-16 21:55:54,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:55:54,517 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-16 21:55:54,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 21:55:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-16 21:55:54,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437053459] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-16 21:55:54,899 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-16 21:55:54,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 14 [2021-11-16 21:55:54,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246931237] [2021-11-16 21:55:54,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-16 21:55:54,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-16 21:55:54,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:55:54,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-16 21:55:54,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-16 21:55:54,902 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-16 21:55:55,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:55:55,110 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2021-11-16 21:55:55,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-16 21:55:55,111 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 36 [2021-11-16 21:55:55,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:55:55,113 INFO L225 Difference]: With dead ends: 58 [2021-11-16 21:55:55,113 INFO L226 Difference]: Without dead ends: 56 [2021-11-16 21:55:55,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 69 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-16 21:55:55,115 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 61 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:55:55,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 502 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 21:55:55,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-16 21:55:55,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-11-16 21:55:55,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 37 states have internal predecessors, (41), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-16 21:55:55,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2021-11-16 21:55:55,123 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 36 [2021-11-16 21:55:55,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:55:55,125 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2021-11-16 21:55:55,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-16 21:55:55,126 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2021-11-16 21:55:55,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-16 21:55:55,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:55:55,128 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:55:55,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-16 21:55:55,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:55:55,339 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:55:55,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:55:55,339 INFO L85 PathProgramCache]: Analyzing trace with hash 2010040638, now seen corresponding path program 1 times [2021-11-16 21:55:55,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:55:55,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102860291] [2021-11-16 21:55:55,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:55:55,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:55:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-16 21:55:55,384 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-16 21:55:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-16 21:55:55,434 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-16 21:55:55,434 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-16 21:55:55,435 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-16 21:55:55,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-16 21:55:55,439 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-16 21:55:55,441 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-16 21:55:55,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 09:55:55 BoogieIcfgContainer [2021-11-16 21:55:55,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-16 21:55:55,466 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-16 21:55:55,466 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-16 21:55:55,466 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-16 21:55:55,467 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 09:55:53" (3/4) ... [2021-11-16 21:55:55,469 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-16 21:55:55,469 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-16 21:55:55,470 INFO L158 Benchmark]: Toolchain (without parser) took 4151.30ms. Allocated memory was 100.7MB in the beginning and 163.6MB in the end (delta: 62.9MB). Free memory was 68.8MB in the beginning and 96.3MB in the end (delta: -27.4MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. [2021-11-16 21:55:55,470 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 100.7MB. Free memory was 57.9MB in the beginning and 57.8MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-16 21:55:55,470 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1176.39ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 68.6MB in the beginning and 80.1MB in the end (delta: -11.5MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. [2021-11-16 21:55:55,471 INFO L158 Benchmark]: Boogie Procedure Inliner took 111.29ms. Allocated memory is still 121.6MB. Free memory was 80.1MB in the beginning and 76.0MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-16 21:55:55,471 INFO L158 Benchmark]: Boogie Preprocessor took 43.54ms. Allocated memory is still 121.6MB. Free memory was 76.0MB in the beginning and 73.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-16 21:55:55,472 INFO L158 Benchmark]: RCFGBuilder took 417.33ms. Allocated memory is still 121.6MB. Free memory was 73.2MB in the beginning and 57.7MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-16 21:55:55,472 INFO L158 Benchmark]: TraceAbstraction took 2390.81ms. Allocated memory was 121.6MB in the beginning and 163.6MB in the end (delta: 41.9MB). Free memory was 57.1MB in the beginning and 96.3MB in the end (delta: -39.2MB). Peak memory consumption was 1.9MB. Max. memory is 16.1GB. [2021-11-16 21:55:55,472 INFO L158 Benchmark]: Witness Printer took 3.09ms. Allocated memory is still 163.6MB. Free memory is still 96.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-16 21:55:55,474 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 100.7MB. Free memory was 57.9MB in the beginning and 57.8MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1176.39ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 68.6MB in the beginning and 80.1MB in the end (delta: -11.5MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 111.29ms. Allocated memory is still 121.6MB. Free memory was 80.1MB in the beginning and 76.0MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.54ms. Allocated memory is still 121.6MB. Free memory was 76.0MB in the beginning and 73.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 417.33ms. Allocated memory is still 121.6MB. Free memory was 73.2MB in the beginning and 57.7MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2390.81ms. Allocated memory was 121.6MB in the beginning and 163.6MB in the end (delta: 41.9MB). Free memory was 57.1MB in the beginning and 96.3MB in the end (delta: -39.2MB). Peak memory consumption was 1.9MB. Max. memory is 16.1GB. * Witness Printer took 3.09ms. Allocated memory is still 163.6MB. Free memory is still 96.3MB. 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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 5885. Possible FailurePath: [L5919] CALL memset_override_0_harness() [L5906] short d1[160]; [L5907] short d2[160]; [L5908] int c = __VERIFIER_nondet_int(); [L5909] CALL assume_abort_if_not(c == 0) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5909] RET assume_abort_if_not(c == 0) VAL [c=0, d1={6:0}, d2={5:0}] [L5911] unsigned size = __VERIFIER_nondet_uint(); [L5912] CALL assume_abort_if_not((size & 0x7) == 0) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5912] RET assume_abort_if_not((size & 0x7) == 0) VAL [c=0, d1={6:0}, d2={5:0}, size=0] [L5913] CALL assume_abort_if_not(size < 160) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5913] RET assume_abort_if_not(size < 160) VAL [c=0, d1={6:0}, d2={5:0}, size=0] [L5914] CALL memset_impl(d1, c, size) [L5870] CALL assume_abort_if_not((((n) == 0) || (s))) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5870] RET assume_abort_if_not((((n) == 0) || (s))) VAL [c=0, n=0, s={6:0}] [L5871] COND FALSE !(n > 0) VAL [c=0, n=0, s={6:0}] [L5876] return s; VAL [c=0, n=0, s={6:0}] [L5914] RET memset_impl(d1, c, size) [L5915] CALL memset_override_0_impl(d2, c, size) [L5881] CALL assume_abort_if_not((((n) == 0) || (dst))) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5881] RET assume_abort_if_not((((n) == 0) || (dst))) VAL [c=0, dst={5:0}, n=0] [L5883] CALL __VERIFIER_assert(c == 0) VAL [\old(cond)=1] [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5883] RET __VERIFIER_assert(c == 0) VAL [c=0, dst={5:0}, n=0] [L5884] size_t num_uint64s = n >> 3; [L5885] size_t rem = n & 0x7; VAL [c=0, dst={5:0}, n=0, num_uint64s=0] [L5886] CALL __VERIFIER_assert(rem == 0) VAL [\old(cond)=0] [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0] [L223] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 61 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 61 mSDsluCounter, 577 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 449 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 158 IncrementalHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 128 mSDtfsCounter, 158 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 443 SizeOfPredicates, 13 NumberOfNonLiveVariables, 138 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 124/160 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 [2021-11-16 21:55:55,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_override_0_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 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-16 21:55:57,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-16 21:55:57,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-16 21:55:57,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-16 21:55:57,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-16 21:55:57,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-16 21:55:57,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-16 21:55:57,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-16 21:55:57,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-16 21:55:57,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-16 21:55:57,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-16 21:55:57,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-16 21:55:57,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-16 21:55:57,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-16 21:55:57,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-16 21:55:57,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-16 21:55:57,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-16 21:55:57,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-16 21:55:57,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-16 21:55:57,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-16 21:55:57,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-16 21:55:57,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-16 21:55:57,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-16 21:55:57,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-16 21:55:57,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-16 21:55:57,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-16 21:55:57,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-16 21:55:57,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-16 21:55:57,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-16 21:55:57,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-16 21:55:57,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-16 21:55:57,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-16 21:55:57,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-16 21:55:57,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-16 21:55:57,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-16 21:55:57,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-16 21:55:57,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-16 21:55:57,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-16 21:55:57,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-16 21:55:57,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-16 21:55:57,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-16 21:55:57,448 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-16 21:55:57,481 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-16 21:55:57,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-16 21:55:57,482 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-16 21:55:57,482 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-16 21:55:57,483 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-16 21:55:57,483 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-16 21:55:57,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-16 21:55:57,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-16 21:55:57,484 INFO L138 SettingsManager]: * Use SBE=true [2021-11-16 21:55:57,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-16 21:55:57,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-16 21:55:57,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-16 21:55:57,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-16 21:55:57,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-16 21:55:57,486 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-16 21:55:57,486 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-16 21:55:57,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-16 21:55:57,486 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-16 21:55:57,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-16 21:55:57,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-16 21:55:57,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-16 21:55:57,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-16 21:55:57,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 21:55:57,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-16 21:55:57,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-16 21:55:57,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-16 21:55:57,488 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-16 21:55:57,488 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-16 21:55:57,489 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-16 21:55:57,489 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-16 21:55:57,489 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-16 21:55:57,489 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-16 21:55:57,489 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-16 21:55:57,490 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c [2021-11-16 21:55:57,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-16 21:55:57,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-16 21:55:57,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-16 21:55:57,818 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-16 21:55:57,819 INFO L275 PluginConnector]: CDTParser initialized [2021-11-16 21:55:57,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-11-16 21:55:57,875 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0523884b5/8833df9edcf74a30a59168e67b3ff722/FLAGc07ed93cc [2021-11-16 21:55:58,531 INFO L306 CDTParser]: Found 1 translation units. [2021-11-16 21:55:58,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-11-16 21:55:58,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0523884b5/8833df9edcf74a30a59168e67b3ff722/FLAGc07ed93cc [2021-11-16 21:55:58,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0523884b5/8833df9edcf74a30a59168e67b3ff722 [2021-11-16 21:55:58,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-16 21:55:58,860 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-16 21:55:58,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-16 21:55:58,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-16 21:55:58,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-16 21:55:58,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:55:58" (1/1) ... [2021-11-16 21:55:58,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a45d3e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:58, skipping insertion in model container [2021-11-16 21:55:58,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:55:58" (1/1) ... [2021-11-16 21:55:58,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-16 21:55:58,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-16 21:55:59,196 WARN L230 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_override_0_harness.i[4491,4504] [2021-11-16 21:55:59,203 WARN L230 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_override_0_harness.i[4551,4564] [2021-11-16 21:55:59,215 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-16 21:55:59,220 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-16 21:55:59,794 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:59,796 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:59,796 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:59,798 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:59,799 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:59,810 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:59,812 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:59,813 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:59,821 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:59,823 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:59,825 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:59,826 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:59,827 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:55:59,958 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-16 21:55:59,960 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-16 21:55:59,961 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-16 21:55:59,962 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-16 21:55:59,963 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-16 21:55:59,964 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-16 21:55:59,965 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-16 21:55:59,965 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-16 21:55:59,967 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-16 21:55:59,967 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-16 21:56:00,029 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 21:56:00,045 INFO L203 MainTranslator]: Completed pre-run [2021-11-16 21:56:00,065 WARN L230 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_override_0_harness.i[4491,4504] [2021-11-16 21:56:00,066 WARN L230 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_override_0_harness.i[4551,4564] [2021-11-16 21:56:00,068 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-16 21:56:00,069 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-16 21:56:00,116 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:56:00,117 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:56:00,117 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:56:00,118 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:56:00,119 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:56:00,125 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:56:00,131 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:56:00,132 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:56:00,133 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:56:00,134 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:56:00,135 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:56:00,136 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:56:00,137 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:56:00,165 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-16 21:56:00,172 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-16 21:56:00,172 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-16 21:56:00,174 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-16 21:56:00,175 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-16 21:56:00,175 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-16 21:56:00,176 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-16 21:56:00,177 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-16 21:56:00,177 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-16 21:56:00,178 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-16 21:56:00,196 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 21:56:00,411 INFO L208 MainTranslator]: Completed translation [2021-11-16 21:56:00,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:56:00 WrapperNode [2021-11-16 21:56:00,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-16 21:56:00,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-16 21:56:00,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-16 21:56:00,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-16 21:56:00,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:56:00" (1/1) ... [2021-11-16 21:56:00,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:56:00" (1/1) ... [2021-11-16 21:56:00,566 INFO L137 Inliner]: procedures = 613, calls = 611, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 85 [2021-11-16 21:56:00,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-16 21:56:00,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-16 21:56:00,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-16 21:56:00,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-16 21:56:00,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:56:00" (1/1) ... [2021-11-16 21:56:00,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:56:00" (1/1) ... [2021-11-16 21:56:00,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:56:00" (1/1) ... [2021-11-16 21:56:00,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:56:00" (1/1) ... [2021-11-16 21:56:00,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:56:00" (1/1) ... [2021-11-16 21:56:00,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:56:00" (1/1) ... [2021-11-16 21:56:00,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:56:00" (1/1) ... [2021-11-16 21:56:00,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-16 21:56:00,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-16 21:56:00,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-16 21:56:00,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-16 21:56:00,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:56:00" (1/1) ... [2021-11-16 21:56:00,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 21:56:00,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:56:00,631 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) [2021-11-16 21:56:00,642 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 [2021-11-16 21:56:00,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-16 21:56:00,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-16 21:56:00,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-16 21:56:00,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-16 21:56:00,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-16 21:56:00,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-16 21:56:00,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-16 21:56:00,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-16 21:56:00,672 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-16 21:56:00,672 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-16 21:56:00,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-16 21:56:00,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-16 21:56:00,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-16 21:56:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2021-11-16 21:56:00,673 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2021-11-16 21:56:00,673 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-16 21:56:00,673 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-16 21:56:00,905 INFO L236 CfgBuilder]: Building ICFG [2021-11-16 21:56:00,907 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-16 21:56:01,130 INFO L277 CfgBuilder]: Performing block encoding [2021-11-16 21:56:01,135 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-16 21:56:01,135 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-16 21:56:01,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 09:56:01 BoogieIcfgContainer [2021-11-16 21:56:01,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-16 21:56:01,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-16 21:56:01,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-16 21:56:01,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-16 21:56:01,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:55:58" (1/3) ... [2021-11-16 21:56:01,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@668af177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:56:01, skipping insertion in model container [2021-11-16 21:56:01,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:56:00" (2/3) ... [2021-11-16 21:56:01,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@668af177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:56:01, skipping insertion in model container [2021-11-16 21:56:01,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 09:56:01" (3/3) ... [2021-11-16 21:56:01,144 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_override_0_harness.i [2021-11-16 21:56:01,147 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-16 21:56:01,148 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-16 21:56:01,182 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-16 21:56:01,188 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 [2021-11-16 21:56:01,188 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-16 21:56:01,201 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-16 21:56:01,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-16 21:56:01,205 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:56:01,205 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:56:01,206 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:56:01,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:56:01,209 INFO L85 PathProgramCache]: Analyzing trace with hash 16590849, now seen corresponding path program 1 times [2021-11-16 21:56:01,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-16 21:56:01,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408431802] [2021-11-16 21:56:01,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:56:01,221 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-16 21:56:01,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-16 21:56:01,222 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) [2021-11-16 21:56:01,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-16 21:56:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:56:01,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-16 21:56:01,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:56:01,446 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-16 21:56:01,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 21:56:01,544 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-16 21:56:01,545 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-16 21:56:01,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408431802] [2021-11-16 21:56:01,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408431802] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-16 21:56:01,546 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:56:01,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-16 21:56:01,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515235444] [2021-11-16 21:56:01,549 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-16 21:56:01,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-16 21:56:01,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-16 21:56:01,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-16 21:56:01,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-16 21:56:01,585 INFO L87 Difference]: Start difference. First operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-16 21:56:01,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:56:01,619 INFO L93 Difference]: Finished difference Result 117 states and 167 transitions. [2021-11-16 21:56:01,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-16 21:56:01,622 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 36 [2021-11-16 21:56:01,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:56:01,632 INFO L225 Difference]: With dead ends: 117 [2021-11-16 21:56:01,632 INFO L226 Difference]: Without dead ends: 52 [2021-11-16 21:56:01,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-16 21:56:01,637 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-16 21:56:01,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-16 21:56:01,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-16 21:56:01,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-11-16 21:56:01,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-16 21:56:01,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2021-11-16 21:56:01,668 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 36 [2021-11-16 21:56:01,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:56:01,668 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2021-11-16 21:56:01,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-16 21:56:01,668 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2021-11-16 21:56:01,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-16 21:56:01,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:56:01,670 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:56:01,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-16 21:56:01,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-16 21:56:01,882 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:56:01,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:56:01,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1271235587, now seen corresponding path program 1 times [2021-11-16 21:56:01,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-16 21:56:01,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294054078] [2021-11-16 21:56:01,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:56:01,884 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-16 21:56:01,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-16 21:56:01,885 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) [2021-11-16 21:56:01,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-16 21:56:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:56:01,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-16 21:56:01,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:56:02,127 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-16 21:56:02,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 21:56:02,283 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-16 21:56:02,283 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-16 21:56:02,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1294054078] [2021-11-16 21:56:02,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1294054078] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-16 21:56:02,287 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-16 21:56:02,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-11-16 21:56:02,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857210585] [2021-11-16 21:56:02,288 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-16 21:56:02,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-16 21:56:02,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-16 21:56:02,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-16 21:56:02,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-16 21:56:02,291 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-16 21:56:02,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:56:02,486 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2021-11-16 21:56:02,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-16 21:56:02,486 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 36 [2021-11-16 21:56:02,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:56:02,488 INFO L225 Difference]: With dead ends: 58 [2021-11-16 21:56:02,488 INFO L226 Difference]: Without dead ends: 56 [2021-11-16 21:56:02,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-16 21:56:02,489 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 42 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:56:02,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 401 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 21:56:02,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-16 21:56:02,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-11-16 21:56:02,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 37 states have internal predecessors, (41), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-16 21:56:02,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2021-11-16 21:56:02,499 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 36 [2021-11-16 21:56:02,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:56:02,500 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2021-11-16 21:56:02,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-16 21:56:02,500 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2021-11-16 21:56:02,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-16 21:56:02,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:56:02,501 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:56:02,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-16 21:56:02,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-16 21:56:02,713 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:56:02,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:56:02,714 INFO L85 PathProgramCache]: Analyzing trace with hash 2010040638, now seen corresponding path program 1 times [2021-11-16 21:56:02,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-16 21:56:02,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923423680] [2021-11-16 21:56:02,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:56:02,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-16 21:56:02,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-16 21:56:02,717 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) [2021-11-16 21:56:02,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-16 21:56:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:56:02,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-16 21:56:02,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:56:03,102 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-16 21:56:03,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 21:56:03,380 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-16 21:56:03,380 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-16 21:56:03,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923423680] [2021-11-16 21:56:03,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923423680] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-16 21:56:03,381 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-16 21:56:03,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-11-16 21:56:03,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226942320] [2021-11-16 21:56:03,381 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-16 21:56:03,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-16 21:56:03,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-16 21:56:03,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-16 21:56:03,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-16 21:56:03,383 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-16 21:56:03,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:56:03,577 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2021-11-16 21:56:03,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-16 21:56:03,578 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 42 [2021-11-16 21:56:03,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:56:03,579 INFO L225 Difference]: With dead ends: 62 [2021-11-16 21:56:03,579 INFO L226 Difference]: Without dead ends: 60 [2021-11-16 21:56:03,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-16 21:56:03,580 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 15 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:56:03,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 453 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2021-11-16 21:56:03,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-16 21:56:03,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-11-16 21:56:03,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 40 states have internal predecessors, (44), 15 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-16 21:56:03,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2021-11-16 21:56:03,589 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 42 [2021-11-16 21:56:03,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:56:03,589 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2021-11-16 21:56:03,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-16 21:56:03,589 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2021-11-16 21:56:03,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-16 21:56:03,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:56:03,590 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:56:03,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-16 21:56:03,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-16 21:56:03,791 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:56:03,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:56:03,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1110629482, now seen corresponding path program 1 times [2021-11-16 21:56:03,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-16 21:56:03,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062482739] [2021-11-16 21:56:03,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:56:03,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-16 21:56:03,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-16 21:56:03,794 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) [2021-11-16 21:56:03,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-16 21:56:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:56:03,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-16 21:56:03,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:56:04,121 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-16 21:56:04,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 21:56:04,330 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-16 21:56:04,331 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-16 21:56:04,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062482739] [2021-11-16 21:56:04,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062482739] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-16 21:56:04,331 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:56:04,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-16 21:56:04,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974038255] [2021-11-16 21:56:04,332 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-16 21:56:04,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-16 21:56:04,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-16 21:56:04,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-16 21:56:04,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-16 21:56:04,336 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-16 21:56:04,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:56:04,447 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2021-11-16 21:56:04,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-16 21:56:04,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 51 [2021-11-16 21:56:04,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:56:04,448 INFO L225 Difference]: With dead ends: 66 [2021-11-16 21:56:04,448 INFO L226 Difference]: Without dead ends: 64 [2021-11-16 21:56:04,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-16 21:56:04,449 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 25 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:56:04,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 309 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 21:56:04,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-16 21:56:04,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-11-16 21:56:04,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 42 states have (on average 1.119047619047619) internal successors, (47), 43 states have internal predecessors, (47), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-16 21:56:04,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2021-11-16 21:56:04,458 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 51 [2021-11-16 21:56:04,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:56:04,459 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2021-11-16 21:56:04,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-16 21:56:04,459 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2021-11-16 21:56:04,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-16 21:56:04,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:56:04,461 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:56:04,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-16 21:56:04,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-16 21:56:04,673 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:56:04,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:56:04,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1132287315, now seen corresponding path program 1 times [2021-11-16 21:56:04,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-16 21:56:04,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219981617] [2021-11-16 21:56:04,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:56:04,674 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-16 21:56:04,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-16 21:56:04,675 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) [2021-11-16 21:56:04,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-16 21:56:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:56:04,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-16 21:56:04,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:56:05,056 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-16 21:56:05,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 21:56:05,249 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-16 21:56:05,250 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-16 21:56:05,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219981617] [2021-11-16 21:56:05,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219981617] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-16 21:56:05,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 21:56:05,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2021-11-16 21:56:05,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974232427] [2021-11-16 21:56:05,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:56:05,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-16 21:56:05,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-16 21:56:05,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-16 21:56:05,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-16 21:56:05,251 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-16 21:56:05,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:56:05,332 INFO L93 Difference]: Finished difference Result 107 states and 126 transitions. [2021-11-16 21:56:05,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 21:56:05,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 68 [2021-11-16 21:56:05,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:56:05,342 INFO L225 Difference]: With dead ends: 107 [2021-11-16 21:56:05,342 INFO L226 Difference]: Without dead ends: 79 [2021-11-16 21:56:05,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-16 21:56:05,343 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 29 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:56:05,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 234 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 21:56:05,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-16 21:56:05,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2021-11-16 21:56:05,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 52 states have internal predecessors, (57), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-16 21:56:05,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2021-11-16 21:56:05,353 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 68 [2021-11-16 21:56:05,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:56:05,354 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2021-11-16 21:56:05,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-16 21:56:05,354 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2021-11-16 21:56:05,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-16 21:56:05,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:56:05,355 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:56:05,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-16 21:56:05,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-16 21:56:05,568 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:56:05,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:56:05,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1524731977, now seen corresponding path program 1 times [2021-11-16 21:56:05,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-16 21:56:05,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042591588] [2021-11-16 21:56:05,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:56:05,570 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-16 21:56:05,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-16 21:56:05,571 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) [2021-11-16 21:56:05,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-16 21:56:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:56:05,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-16 21:56:05,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:56:05,907 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-16 21:56:05,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 21:56:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-16 21:56:06,084 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-16 21:56:06,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042591588] [2021-11-16 21:56:06,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042591588] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-16 21:56:06,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 21:56:06,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-11-16 21:56:06,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925808538] [2021-11-16 21:56:06,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:56:06,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-16 21:56:06,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-16 21:56:06,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-16 21:56:06,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-16 21:56:06,087 INFO L87 Difference]: Start difference. First operand 77 states and 93 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-16 21:56:06,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:56:06,112 INFO L93 Difference]: Finished difference Result 131 states and 153 transitions. [2021-11-16 21:56:06,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-16 21:56:06,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 69 [2021-11-16 21:56:06,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:56:06,115 INFO L225 Difference]: With dead ends: 131 [2021-11-16 21:56:06,115 INFO L226 Difference]: Without dead ends: 78 [2021-11-16 21:56:06,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-16 21:56:06,116 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 1 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-16 21:56:06,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 124 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-16 21:56:06,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-16 21:56:06,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-11-16 21:56:06,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 53 states have internal predecessors, (58), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-16 21:56:06,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2021-11-16 21:56:06,126 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 69 [2021-11-16 21:56:06,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:56:06,127 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2021-11-16 21:56:06,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-16 21:56:06,127 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2021-11-16 21:56:06,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-16 21:56:06,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:56:06,129 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:56:06,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-16 21:56:06,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-16 21:56:06,341 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:56:06,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:56:06,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1383518092, now seen corresponding path program 1 times [2021-11-16 21:56:06,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-16 21:56:06,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540675035] [2021-11-16 21:56:06,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:56:06,343 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-16 21:56:06,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-16 21:56:06,344 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) [2021-11-16 21:56:06,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-16 21:56:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:56:06,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-16 21:56:06,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:56:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-16 21:56:06,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 21:56:06,989 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-16 21:56:06,990 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-16 21:56:06,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540675035] [2021-11-16 21:56:06,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540675035] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-16 21:56:06,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 21:56:06,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 13 [2021-11-16 21:56:06,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899803168] [2021-11-16 21:56:06,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:56:06,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-16 21:56:06,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-16 21:56:06,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-16 21:56:06,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-16 21:56:06,991 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-16 21:56:07,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:56:07,079 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2021-11-16 21:56:07,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-16 21:56:07,080 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 72 [2021-11-16 21:56:07,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:56:07,081 INFO L225 Difference]: With dead ends: 100 [2021-11-16 21:56:07,081 INFO L226 Difference]: Without dead ends: 65 [2021-11-16 21:56:07,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-16 21:56:07,082 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 34 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:56:07,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 239 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 21:56:07,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-16 21:56:07,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-11-16 21:56:07,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 44 states have internal predecessors, (47), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-16 21:56:07,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2021-11-16 21:56:07,089 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 72 [2021-11-16 21:56:07,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:56:07,090 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2021-11-16 21:56:07,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-16 21:56:07,090 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2021-11-16 21:56:07,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-16 21:56:07,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:56:07,091 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:56:07,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-16 21:56:07,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-16 21:56:07,305 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:56:07,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:56:07,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1069315495, now seen corresponding path program 1 times [2021-11-16 21:56:07,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-16 21:56:07,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1842013425] [2021-11-16 21:56:07,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:56:07,306 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-16 21:56:07,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-16 21:56:07,308 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) [2021-11-16 21:56:07,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-16 21:56:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:56:07,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-16 21:56:07,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:56:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-16 21:56:07,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 21:56:08,094 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-16 21:56:08,095 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-16 21:56:08,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1842013425] [2021-11-16 21:56:08,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1842013425] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-16 21:56:08,095 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-16 21:56:08,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-11-16 21:56:08,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490668907] [2021-11-16 21:56:08,095 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-16 21:56:08,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-16 21:56:08,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-16 21:56:08,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-16 21:56:08,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-16 21:56:08,097 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 11 states have internal predecessors, (46), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2021-11-16 21:56:08,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:56:08,195 INFO L93 Difference]: Finished difference Result 122 states and 139 transitions. [2021-11-16 21:56:08,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-16 21:56:08,196 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 11 states have internal predecessors, (46), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) Word has length 71 [2021-11-16 21:56:08,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:56:08,197 INFO L225 Difference]: With dead ends: 122 [2021-11-16 21:56:08,197 INFO L226 Difference]: Without dead ends: 69 [2021-11-16 21:56:08,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-16 21:56:08,198 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-16 21:56:08,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 403 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 16 Unchecked, 0.0s Time] [2021-11-16 21:56:08,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-16 21:56:08,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-11-16 21:56:08,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 48 states have internal predecessors, (51), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-16 21:56:08,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2021-11-16 21:56:08,204 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 71 [2021-11-16 21:56:08,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:56:08,205 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2021-11-16 21:56:08,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 11 states have internal predecessors, (46), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2021-11-16 21:56:08,205 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2021-11-16 21:56:08,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-16 21:56:08,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:56:08,206 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:56:08,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-16 21:56:08,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-16 21:56:08,420 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:56:08,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:56:08,420 INFO L85 PathProgramCache]: Analyzing trace with hash 511671837, now seen corresponding path program 2 times [2021-11-16 21:56:08,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-16 21:56:08,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901806082] [2021-11-16 21:56:08,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-16 21:56:08,421 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-16 21:56:08,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-16 21:56:08,422 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) [2021-11-16 21:56:08,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-16 21:56:08,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-16 21:56:08,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 21:56:08,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-16 21:56:08,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:56:09,032 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-16 21:56:09,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 21:56:09,617 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-16 21:56:09,617 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-16 21:56:09,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901806082] [2021-11-16 21:56:09,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901806082] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-16 21:56:09,617 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-16 21:56:09,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2021-11-16 21:56:09,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477808527] [2021-11-16 21:56:09,617 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-16 21:56:09,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-16 21:56:09,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-16 21:56:09,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-16 21:56:09,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-11-16 21:56:09,619 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2021-11-16 21:56:10,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:56:10,189 INFO L93 Difference]: Finished difference Result 130 states and 149 transitions. [2021-11-16 21:56:10,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-16 21:56:10,189 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) Word has length 75 [2021-11-16 21:56:10,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:56:10,190 INFO L225 Difference]: With dead ends: 130 [2021-11-16 21:56:10,190 INFO L226 Difference]: Without dead ends: 77 [2021-11-16 21:56:10,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-11-16 21:56:10,191 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 4 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:56:10,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 702 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 48 Unchecked, 0.1s Time] [2021-11-16 21:56:10,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-11-16 21:56:10,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-11-16 21:56:10,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 56 states have internal predecessors, (59), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-16 21:56:10,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2021-11-16 21:56:10,198 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 75 [2021-11-16 21:56:10,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:56:10,198 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2021-11-16 21:56:10,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2021-11-16 21:56:10,199 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2021-11-16 21:56:10,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-16 21:56:10,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:56:10,200 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:56:10,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-16 21:56:10,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-16 21:56:10,400 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:56:10,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:56:10,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1085153371, now seen corresponding path program 3 times [2021-11-16 21:56:10,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-16 21:56:10,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784560724] [2021-11-16 21:56:10,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-16 21:56:10,402 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-16 21:56:10,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-16 21:56:10,403 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) [2021-11-16 21:56:10,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-16 21:56:10,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-16 21:56:10,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 21:56:10,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-16 21:56:10,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:56:10,775 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-16 21:56:10,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 21:56:11,152 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-16 21:56:11,152 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-16 21:56:11,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784560724] [2021-11-16 21:56:11,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784560724] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-16 21:56:11,152 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-16 21:56:11,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-11-16 21:56:11,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866644398] [2021-11-16 21:56:11,153 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-16 21:56:11,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-16 21:56:11,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-16 21:56:11,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-16 21:56:11,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-16 21:56:11,154 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand has 16 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2021-11-16 21:56:11,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:56:11,593 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2021-11-16 21:56:11,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-16 21:56:11,594 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 83 [2021-11-16 21:56:11,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:56:11,594 INFO L225 Difference]: With dead ends: 113 [2021-11-16 21:56:11,595 INFO L226 Difference]: Without dead ends: 85 [2021-11-16 21:56:11,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-11-16 21:56:11,596 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 77 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-16 21:56:11,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 360 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 88 Invalid, 0 Unknown, 13 Unchecked, 0.3s Time] [2021-11-16 21:56:11,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-16 21:56:11,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2021-11-16 21:56:11,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 60 states have internal predecessors, (64), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-16 21:56:11,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 94 transitions. [2021-11-16 21:56:11,604 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 94 transitions. Word has length 83 [2021-11-16 21:56:11,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:56:11,604 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 94 transitions. [2021-11-16 21:56:11,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2021-11-16 21:56:11,605 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 94 transitions. [2021-11-16 21:56:11,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-16 21:56:11,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:56:11,605 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:56:11,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-16 21:56:11,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-16 21:56:11,818 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:56:11,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:56:11,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2075883641, now seen corresponding path program 1 times [2021-11-16 21:56:11,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-16 21:56:11,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181449635] [2021-11-16 21:56:11,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:56:11,819 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-16 21:56:11,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-16 21:56:11,820 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) [2021-11-16 21:56:11,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-16 21:56:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:56:11,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-16 21:56:11,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:56:12,643 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 38 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-16 21:56:12,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 21:56:13,557 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 9 proven. 61 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-16 21:56:13,557 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-16 21:56:13,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181449635] [2021-11-16 21:56:13,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181449635] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-16 21:56:13,557 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-16 21:56:13,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 26 [2021-11-16 21:56:13,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168023087] [2021-11-16 21:56:13,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-16 21:56:13,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-16 21:56:13,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-16 21:56:13,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-16 21:56:13,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2021-11-16 21:56:13,559 INFO L87 Difference]: Start difference. First operand 82 states and 94 transitions. Second operand has 26 states, 25 states have (on average 2.88) internal successors, (72), 23 states have internal predecessors, (72), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2021-11-16 21:56:13,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:56:13,820 INFO L93 Difference]: Finished difference Result 142 states and 162 transitions. [2021-11-16 21:56:13,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-16 21:56:13,821 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.88) internal successors, (72), 23 states have internal predecessors, (72), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) Word has length 85 [2021-11-16 21:56:13,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:56:13,822 INFO L225 Difference]: With dead ends: 142 [2021-11-16 21:56:13,822 INFO L226 Difference]: Without dead ends: 84 [2021-11-16 21:56:13,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2021-11-16 21:56:13,823 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 4 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-16 21:56:13,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 803 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 29 Unchecked, 0.2s Time] [2021-11-16 21:56:13,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-16 21:56:13,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-11-16 21:56:13,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 62 states have internal predecessors, (66), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-16 21:56:13,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 96 transitions. [2021-11-16 21:56:13,832 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 96 transitions. Word has length 85 [2021-11-16 21:56:13,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:56:13,832 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 96 transitions. [2021-11-16 21:56:13,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.88) internal successors, (72), 23 states have internal predecessors, (72), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2021-11-16 21:56:13,832 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 96 transitions. [2021-11-16 21:56:13,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-16 21:56:13,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:56:13,835 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:56:13,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-16 21:56:14,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-16 21:56:14,049 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:56:14,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:56:14,049 INFO L85 PathProgramCache]: Analyzing trace with hash 24387113, now seen corresponding path program 2 times [2021-11-16 21:56:14,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-16 21:56:14,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787386072] [2021-11-16 21:56:14,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-16 21:56:14,050 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-16 21:56:14,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-16 21:56:14,051 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) [2021-11-16 21:56:14,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-16 21:56:14,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-16 21:56:14,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-11-16 21:56:14,375 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-16 21:56:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-16 21:56:14,699 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-16 21:56:14,699 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-16 21:56:14,700 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-16 21:56:14,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-16 21:56:14,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-16 21:56:14,924 INFO L732 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:56:14,926 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-16 21:56:14,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 09:56:14 BoogieIcfgContainer [2021-11-16 21:56:14,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-16 21:56:14,988 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-16 21:56:14,988 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-16 21:56:14,989 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-16 21:56:14,989 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 09:56:01" (3/4) ... [2021-11-16 21:56:14,992 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-16 21:56:15,043 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-11-16 21:56:15,043 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-16 21:56:15,043 INFO L158 Benchmark]: Toolchain (without parser) took 16183.59ms. Allocated memory was 54.5MB in the beginning and 130.0MB in the end (delta: 75.5MB). Free memory was 31.8MB in the beginning and 30.9MB in the end (delta: 902.2kB). Peak memory consumption was 76.9MB. Max. memory is 16.1GB. [2021-11-16 21:56:15,043 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 44.0MB. Free memory was 26.1MB in the beginning and 26.1MB in the end (delta: 36.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-16 21:56:15,044 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1551.98ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.6MB in the beginning and 25.3MB in the end (delta: 6.3MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2021-11-16 21:56:15,044 INFO L158 Benchmark]: Boogie Procedure Inliner took 153.08ms. Allocated memory is still 67.1MB. Free memory was 25.3MB in the beginning and 33.0MB in the end (delta: -7.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-16 21:56:15,044 INFO L158 Benchmark]: Boogie Preprocessor took 36.29ms. Allocated memory is still 67.1MB. Free memory was 33.0MB in the beginning and 30.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-16 21:56:15,045 INFO L158 Benchmark]: RCFGBuilder took 533.07ms. Allocated memory was 67.1MB in the beginning and 86.0MB in the end (delta: 18.9MB). Free memory was 30.0MB in the beginning and 52.2MB in the end (delta: -22.2MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2021-11-16 21:56:15,045 INFO L158 Benchmark]: TraceAbstraction took 13849.20ms. Allocated memory was 86.0MB in the beginning and 130.0MB in the end (delta: 44.0MB). Free memory was 51.8MB in the beginning and 37.2MB in the end (delta: 14.6MB). Peak memory consumption was 59.2MB. Max. memory is 16.1GB. [2021-11-16 21:56:15,045 INFO L158 Benchmark]: Witness Printer took 54.70ms. Allocated memory is still 130.0MB. Free memory was 37.2MB in the beginning and 30.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-16 21:56:15,046 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 44.0MB. Free memory was 26.1MB in the beginning and 26.1MB in the end (delta: 36.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1551.98ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.6MB in the beginning and 25.3MB in the end (delta: 6.3MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 153.08ms. Allocated memory is still 67.1MB. Free memory was 25.3MB in the beginning and 33.0MB in the end (delta: -7.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.29ms. Allocated memory is still 67.1MB. Free memory was 33.0MB in the beginning and 30.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 533.07ms. Allocated memory was 67.1MB in the beginning and 86.0MB in the end (delta: 18.9MB). Free memory was 30.0MB in the beginning and 52.2MB in the end (delta: -22.2MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. * TraceAbstraction took 13849.20ms. Allocated memory was 86.0MB in the beginning and 130.0MB in the end (delta: 44.0MB). Free memory was 51.8MB in the beginning and 37.2MB in the end (delta: 14.6MB). Peak memory consumption was 59.2MB. Max. memory is 16.1GB. * Witness Printer took 54.70ms. Allocated memory is still 130.0MB. Free memory was 37.2MB in the beginning and 30.9MB in the end (delta: 6.3MB). 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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: [L5919] CALL memset_override_0_harness() [L5906] short d1[160]; [L5907] short d2[160]; [L5908] int c = __VERIFIER_nondet_int(); [L5909] CALL assume_abort_if_not(c == 0) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5909] RET assume_abort_if_not(c == 0) VAL [c=0, d1={16777223:0}, d2={5:0}] [L5911] unsigned size = __VERIFIER_nondet_uint(); [L5912] CALL assume_abort_if_not((size & 0x7) == 0) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5912] RET assume_abort_if_not((size & 0x7) == 0) VAL [c=0, d1={16777223:0}, d2={5:0}, size=8] [L5913] CALL assume_abort_if_not(size < 160) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5913] RET assume_abort_if_not(size < 160) VAL [c=0, d1={16777223:0}, d2={5:0}, size=8] [L5914] CALL memset_impl(d1, c, size) [L5870] CALL assume_abort_if_not((((n) == 0) || (s))) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5870] RET assume_abort_if_not((((n) == 0) || (s))) VAL [c=0, n=8, s={16777223:0}] [L5871] COND TRUE n > 0 [L5872] char *sp = (char *)s; [L5873] unsigned long i = 0; VAL [c=0, i=0, n=8, s={16777223:0}, sp={16777223:0}] [L5873] COND TRUE i < n [L5874] sp[i] = c VAL [c=0, i=0, n=8, s={16777223:0}, sp={16777223:0}] [L5873] i++ VAL [c=0, i=1, n=8, s={16777223:0}, sp={16777223:0}] [L5873] COND TRUE i < n [L5874] sp[i] = c VAL [c=0, i=1, n=8, s={16777223:0}, sp={16777223:0}] [L5873] i++ VAL [c=0, i=2, n=8, s={16777223:0}, sp={16777223:0}] [L5873] COND TRUE i < n [L5874] sp[i] = c VAL [c=0, i=2, n=8, s={16777223:0}, sp={16777223:0}] [L5873] i++ VAL [c=0, i=3, n=8, s={16777223:0}, sp={16777223:0}] [L5873] COND TRUE i < n [L5874] sp[i] = c VAL [c=0, i=3, n=8, s={16777223:0}, sp={16777223:0}] [L5873] i++ VAL [c=0, i=4, n=8, s={16777223:0}, sp={16777223:0}] [L5873] COND TRUE i < n [L5874] sp[i] = c VAL [c=0, i=4, n=8, s={16777223:0}, sp={16777223:0}] [L5873] i++ VAL [c=0, i=5, n=8, s={16777223:0}, sp={16777223:0}] [L5873] COND TRUE i < n [L5874] sp[i] = c VAL [c=0, i=5, n=8, s={16777223:0}, sp={16777223:0}] [L5873] i++ VAL [c=0, i=6, n=8, s={16777223:0}, sp={16777223:0}] [L5873] COND TRUE i < n [L5874] sp[i] = c VAL [c=0, i=6, n=8, s={16777223:0}, sp={16777223:0}] [L5873] i++ VAL [c=0, i=7, n=8, s={16777223:0}, sp={16777223:0}] [L5873] COND TRUE i < n [L5874] sp[i] = c VAL [c=0, i=7, n=8, s={16777223:0}, sp={16777223:0}] [L5873] i++ VAL [c=0, i=8, n=8, s={16777223:0}, sp={16777223:0}] [L5873] COND FALSE !(i < n) VAL [c=0, i=8, n=8, s={16777223:0}, sp={16777223:0}] [L5876] return s; VAL [c=0, i=8, n=8, s={16777223:0}, sp={16777223:0}] [L5914] RET memset_impl(d1, c, size) [L5915] CALL memset_override_0_impl(d2, c, size) [L5881] CALL assume_abort_if_not((((n) == 0) || (dst))) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5881] RET assume_abort_if_not((((n) == 0) || (dst))) VAL [c=0, dst={5:0}, n=8] [L5883] CALL __VERIFIER_assert(c == 0) VAL [\old(cond)=1] [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5883] RET __VERIFIER_assert(c == 0) VAL [c=0, dst={5:0}, n=8] [L5884] size_t num_uint64s = n >> 3; [L5885] size_t rem = n & 0x7; VAL [c=0, dst={5:0}, n=8, num_uint64s=1, rem=0] [L5886] CALL __VERIFIER_assert(rem == 0) VAL [\old(cond)=1] [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5886] RET __VERIFIER_assert(rem == 0) VAL [c=0, dst={5:0}, n=8, num_uint64s=1, rem=0] [L5888] uint64_t *d = (uint64_t *)dst; [L5890] size_t i = 0; VAL [c=0, d={5:0}, dst={5:0}, i=0, n=8, num_uint64s=1, rem=0] [L5890] COND TRUE i < num_uint64s [L5891] d[i] = 0 VAL [c=0, d={5:0}, dst={5:0}, i=0, n=8, num_uint64s=1, rem=0] [L5890] ++i VAL [c=0, d={5:0}, dst={5:0}, i=1, n=8, num_uint64s=1, rem=0] [L5890] COND FALSE !(i < num_uint64s) VAL [c=0, d={5:0}, dst={5:0}, i=1, n=8, num_uint64s=1, rem=0] [L5894] return dst; VAL [c=0, d={5:0}, dst={5:0}, i=1, n=8, num_uint64s=1, rem=0] [L5915] RET memset_override_0_impl(d2, c, size) [L5916] CALL assert_bytes_match(d1, d2, size) [L5654] CALL __VERIFIER_assert(!a == !b) VAL [\old(cond)=1] [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5654] RET __VERIFIER_assert(!a == !b) VAL [\old(len)=8, a={16777223:0}, a={16777223:0}, b={5:0}, b={5:0}, len=8] [L5655-L5658] COND TRUE len > 0 && a != ((void *)0) && b != ((void *)0) VAL [\old(len)=8, a={16777223:0}, a={16777223:0}, b={5:0}, b={5:0}, len=8] [L5660] CALL, EXPR nondet_uint64_t() [L266] return __VERIFIER_nondet_ulong(); [L5660] RET, EXPR nondet_uint64_t() VAL [\old(len)=8, a={16777223:0}, a={16777223:0}, b={5:0}, b={5:0}, len=8, nondet_uint64_t()=6] [L5660] size_t i = nondet_uint64_t(); [L5661-L5663] CALL assume_abort_if_not(i < len && len < ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5661-L5663] RET assume_abort_if_not(i < len && len < ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(len)=8, a={16777223:0}, a={16777223:0}, b={5:0}, b={5:0}, i=6, len=8] [L5664] EXPR a[i] [L5664] EXPR b[i] VAL [\old(len)=8, a={16777223:0}, a={16777223:0}, a[i]=0, b={5:0}, b={5:0}, b[i]=-128, i=6, len=8] [L5664] CALL __VERIFIER_assert(a[i] == b[i]) VAL [\old(cond)=0] [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0] [L223] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.7s, OverallIterations: 12, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 254 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 237 mSDsluCounter, 4103 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 123 IncrementalHoareTripleChecker+Unchecked, 3446 mSDsCounter, 61 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 695 IncrementalHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 61 mSolverCounterUnsat, 657 mSDtfsCounter, 695 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1382 GetRequests, 1232 SyntacticMatches, 3 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 5 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=11, InterpolantAutomatonStates: 100, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 775 NumberOfCodeBlocks, 752 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1354 ConstructedInterpolants, 44 QuantifiedInterpolants, 3498 SizeOfPredicates, 65 NumberOfNonLiveVariables, 1495 ConjunctsInSsa, 118 ConjunctsInUnsatCore, 22 InterpolantComputations, 7 PerfectInterpolantSequences, 1400/1650 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! [2021-11-16 21:56:15,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE