./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 ff03de63 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 0.2.2-dev-ff03de6 [2021-12-21 15:38:32,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:38:32,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:38:32,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:38:32,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:38:32,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:38:32,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:38:32,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:38:32,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:38:32,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:38:32,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:38:32,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:38:32,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:38:32,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:38:32,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:38:32,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:38:32,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:38:32,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:38:32,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:38:32,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:38:32,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:38:32,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:38:32,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:38:32,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:38:32,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:38:32,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:38:32,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:38:32,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:38:32,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:38:32,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:38:32,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:38:32,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:38:32,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:38:32,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:38:32,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:38:32,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:38:32,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:38:32,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:38:32,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:38:32,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:38:32,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:38:32,859 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 15:38:32,896 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:38:32,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:38:32,897 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:38:32,897 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:38:32,898 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:38:32,898 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:38:32,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:38:32,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:38:32,899 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:38:32,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:38:32,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:38:32,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:38:32,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:38:32,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:38:32,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:38:32,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:38:32,901 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:38:32,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:38:32,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:38:32,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:38:32,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:38:32,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:38:32,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:38:32,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:38:32,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:38:32,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:38:32,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:38:32,904 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:38:32,904 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:38:32,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:38:32,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:38:32,905 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c [2021-12-21 15:38:33,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:38:33,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:38:33,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:38:33,202 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:38:33,202 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:38:33,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-12-21 15:38:33,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10c0c2d4b/eba673f8de544830873c5f665947945d/FLAG3a5344cea [2021-12-21 15:38:33,848 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:38:33,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-12-21 15:38:33,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10c0c2d4b/eba673f8de544830873c5f665947945d/FLAG3a5344cea [2021-12-21 15:38:34,237 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10c0c2d4b/eba673f8de544830873c5f665947945d [2021-12-21 15:38:34,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:38:34,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:38:34,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:38:34,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:38:34,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:38:34,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:38:34" (1/1) ... [2021-12-21 15:38:34,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7da35732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:34, skipping insertion in model container [2021-12-21 15:38:34,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:38:34" (1/1) ... [2021-12-21 15:38:34,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:38:34,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:38:34,566 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] [2021-12-21 15:38:34,571 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] [2021-12-21 15:38:35,087 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,088 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,089 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,090 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,092 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,106 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,107 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,109 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,110 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,111 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,112 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,113 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,113 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,266 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:38:35,268 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:38:35,270 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:38:35,272 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:38:35,274 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:38:35,275 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:38:35,278 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:38:35,280 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:38:35,281 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:38:35,282 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:38:35,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:38:35,363 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:38:35,387 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] [2021-12-21 15:38:35,387 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] [2021-12-21 15:38:35,453 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,454 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,455 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,456 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,457 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,494 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,495 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,497 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,497 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,498 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,500 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,500 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,501 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:35,527 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:38:35,528 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:38:35,528 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:38:35,529 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:38:35,530 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:38:35,531 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:38:35,532 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:38:35,532 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:38:35,533 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:38:35,534 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:38:35,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:38:35,703 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:38:35,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:35 WrapperNode [2021-12-21 15:38:35,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:38:35,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:38:35,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:38:35,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:38:35,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:35" (1/1) ... [2021-12-21 15:38:35,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:35" (1/1) ... [2021-12-21 15:38:35,790 INFO L137 Inliner]: procedures = 592, calls = 609, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 85 [2021-12-21 15:38:35,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:38:35,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:38:35,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:38:35,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:38:35,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:35" (1/1) ... [2021-12-21 15:38:35,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:35" (1/1) ... [2021-12-21 15:38:35,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:35" (1/1) ... [2021-12-21 15:38:35,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:35" (1/1) ... [2021-12-21 15:38:35,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:35" (1/1) ... [2021-12-21 15:38:35,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:35" (1/1) ... [2021-12-21 15:38:35,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:35" (1/1) ... [2021-12-21 15:38:35,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:38:35,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:38:35,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:38:35,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:38:35,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:35" (1/1) ... [2021-12-21 15:38:35,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:38:35,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:38:35,889 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) [2021-12-21 15:38:35,914 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 [2021-12-21 15:38:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:38:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 15:38:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 15:38:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 15:38:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:38:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:38:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:38:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 15:38:35,938 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 15:38:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:38:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2021-12-21 15:38:35,939 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2021-12-21 15:38:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-21 15:38:35,940 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-21 15:38:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:38:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:38:36,151 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:38:36,157 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:38:36,338 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:38:36,347 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:38:36,348 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-21 15:38:36,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:38:36 BoogieIcfgContainer [2021-12-21 15:38:36,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:38:36,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:38:36,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:38:36,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:38:36,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:38:34" (1/3) ... [2021-12-21 15:38:36,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d84378b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:38:36, skipping insertion in model container [2021-12-21 15:38:36,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:35" (2/3) ... [2021-12-21 15:38:36,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d84378b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:38:36, skipping insertion in model container [2021-12-21 15:38:36,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:38:36" (3/3) ... [2021-12-21 15:38:36,362 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_override_0_harness.i [2021-12-21 15:38:36,369 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:38:36,370 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 15:38:36,419 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:38:36,435 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 [2021-12-21 15:38:36,436 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 15:38:36,460 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) [2021-12-21 15:38:36,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-21 15:38:36,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:38:36,466 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] [2021-12-21 15:38:36,467 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:38:36,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:38:36,475 INFO L85 PathProgramCache]: Analyzing trace with hash 16590849, now seen corresponding path program 1 times [2021-12-21 15:38:36,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:38:36,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044349136] [2021-12-21 15:38:36,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:38:36,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:38:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:38:36,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:38:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:38:36,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:38:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:38:36,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 15:38:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:38:36,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 15:38:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:38:36,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 15:38:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:38:36,930 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-21 15:38:36,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:38:36,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044349136] [2021-12-21 15:38:36,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044349136] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:38:36,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:38:36,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 15:38:36,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114027219] [2021-12-21 15:38:36,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:38:36,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 15:38:36,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:38:36,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 15:38:36,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 15:38:36,961 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) [2021-12-21 15:38:36,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:38:36,984 INFO L93 Difference]: Finished difference Result 117 states and 167 transitions. [2021-12-21 15:38:36,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 15:38:36,986 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 [2021-12-21 15:38:36,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:38:36,992 INFO L225 Difference]: With dead ends: 117 [2021-12-21 15:38:36,993 INFO L226 Difference]: Without dead ends: 52 [2021-12-21 15:38:36,996 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 [2021-12-21 15:38:36,999 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 [2021-12-21 15:38:37,000 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] [2021-12-21 15:38:37,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-21 15:38:37,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-12-21 15:38:37,031 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) [2021-12-21 15:38:37,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2021-12-21 15:38:37,034 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 36 [2021-12-21 15:38:37,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:38:37,034 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2021-12-21 15:38:37,035 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) [2021-12-21 15:38:37,035 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2021-12-21 15:38:37,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-21 15:38:37,036 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:38:37,037 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] [2021-12-21 15:38:37,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 15:38:37,037 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:38:37,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:38:37,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1271235587, now seen corresponding path program 1 times [2021-12-21 15:38:37,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:38:37,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848226727] [2021-12-21 15:38:37,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:38:37,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:38:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:38:37,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:38:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:38:37,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 15:38:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:38:37,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 15:38:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:38:37,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 15:38:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:38:37,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 15:38:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:38:37,588 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-21 15:38:37,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:38:37,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848226727] [2021-12-21 15:38:37,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848226727] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:38:37,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792370892] [2021-12-21 15:38:37,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:38:37,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:38:37,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:38:37,626 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) [2021-12-21 15:38:37,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 15:38:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:38:37,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-21 15:38:37,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:38:38,234 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-21 15:38:38,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:38:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-21 15:38:38,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792370892] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:38:38,709 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:38:38,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 14 [2021-12-21 15:38:38,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402119188] [2021-12-21 15:38:38,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:38:38,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-21 15:38:38,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:38:38,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-21 15:38:38,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-12-21 15:38:38,713 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) [2021-12-21 15:38:38,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:38:38,979 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2021-12-21 15:38:38,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:38:38,980 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 [2021-12-21 15:38:38,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:38:38,982 INFO L225 Difference]: With dead ends: 58 [2021-12-21 15:38:38,982 INFO L226 Difference]: Without dead ends: 56 [2021-12-21 15:38:38,982 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 [2021-12-21 15:38:38,984 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, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:38:38,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 502 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 15:38:38,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-21 15:38:38,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-21 15:38:38,993 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) [2021-12-21 15:38:38,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2021-12-21 15:38:38,994 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 36 [2021-12-21 15:38:38,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:38:38,996 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2021-12-21 15:38:38,996 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) [2021-12-21 15:38:38,996 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2021-12-21 15:38:38,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-21 15:38:38,997 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:38:38,998 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] [2021-12-21 15:38:39,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 15:38:39,219 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 [2021-12-21 15:38:39,220 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:38:39,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:38:39,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2010040638, now seen corresponding path program 1 times [2021-12-21 15:38:39,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:38:39,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024245835] [2021-12-21 15:38:39,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:38:39,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:38:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 15:38:39,294 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 15:38:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 15:38:39,399 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 15:38:39,400 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 15:38:39,401 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-21 15:38:39,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 15:38:39,409 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-21 15:38:39,412 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 15:38:39,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 03:38:39 BoogieIcfgContainer [2021-12-21 15:38:39,456 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 15:38:39,457 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 15:38:39,457 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 15:38:39,457 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 15:38:39,457 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:38:36" (3/4) ... [2021-12-21 15:38:39,460 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 15:38:39,460 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 15:38:39,461 INFO L158 Benchmark]: Toolchain (without parser) took 5220.39ms. Allocated memory was 102.8MB in the beginning and 159.4MB in the end (delta: 56.6MB). Free memory was 60.9MB in the beginning and 61.1MB in the end (delta: -210.8kB). Peak memory consumption was 55.5MB. Max. memory is 16.1GB. [2021-12-21 15:38:39,461 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 102.8MB. Free memory is still 82.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 15:38:39,467 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1461.10ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 60.7MB in the beginning and 93.0MB in the end (delta: -32.3MB). Peak memory consumption was 40.1MB. Max. memory is 16.1GB. [2021-12-21 15:38:39,468 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.19ms. Allocated memory is still 132.1MB. Free memory was 93.0MB in the beginning and 88.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-21 15:38:39,469 INFO L158 Benchmark]: Boogie Preprocessor took 48.80ms. Allocated memory is still 132.1MB. Free memory was 88.8MB in the beginning and 86.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 15:38:39,469 INFO L158 Benchmark]: RCFGBuilder took 513.54ms. Allocated memory is still 132.1MB. Free memory was 86.7MB in the beginning and 69.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-21 15:38:39,469 INFO L158 Benchmark]: TraceAbstraction took 3100.32ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 69.3MB in the beginning and 62.2MB in the end (delta: 7.2MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. [2021-12-21 15:38:39,470 INFO L158 Benchmark]: Witness Printer took 3.87ms. Allocated memory is still 159.4MB. Free memory was 62.2MB in the beginning and 61.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 15:38:39,471 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 102.8MB. Free memory is still 82.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1461.10ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 60.7MB in the beginning and 93.0MB in the end (delta: -32.3MB). Peak memory consumption was 40.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 86.19ms. Allocated memory is still 132.1MB. Free memory was 93.0MB in the beginning and 88.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.80ms. Allocated memory is still 132.1MB. Free memory was 88.8MB in the beginning and 86.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 513.54ms. Allocated memory is still 132.1MB. Free memory was 86.7MB in the beginning and 69.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3100.32ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 69.3MB in the beginning and 62.2MB in the end (delta: 7.2MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. * Witness Printer took 3.87ms. Allocated memory is still 159.4MB. Free memory was 62.2MB in the beginning and 61.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 3.0s, 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, 0.2s 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, 1.6s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 445 SizeOfPredicates, 13 NumberOfNonLiveVariables, 148 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 [2021-12-21 15:38:39,514 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 0.2.2-dev-ff03de6 [2021-12-21 15:38:42,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:38:42,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:38:42,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:38:42,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:38:42,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:38:42,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:38:42,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:38:42,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:38:42,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:38:42,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:38:42,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:38:42,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:38:42,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:38:42,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:38:42,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:38:42,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:38:42,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:38:42,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:38:42,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:38:42,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:38:42,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:38:42,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:38:42,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:38:42,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:38:42,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:38:42,406 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:38:42,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:38:42,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:38:42,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:38:42,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:38:42,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:38:42,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:38:42,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:38:42,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:38:42,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:38:42,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:38:42,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:38:42,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:38:42,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:38:42,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:38:42,418 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-21 15:38:42,465 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:38:42,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:38:42,466 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:38:42,467 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:38:42,468 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:38:42,468 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:38:42,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:38:42,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:38:42,470 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:38:42,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:38:42,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:38:42,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:38:42,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:38:42,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:38:42,472 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 15:38:42,472 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-21 15:38:42,472 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-21 15:38:42,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:38:42,473 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:38:42,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:38:42,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:38:42,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:38:42,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:38:42,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:38:42,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:38:42,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:38:42,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:38:42,474 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-21 15:38:42,475 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-21 15:38:42,475 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:38:42,475 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:38:42,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:38:42,476 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:38:42,476 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-21 15:38:42,476 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c [2021-12-21 15:38:42,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:38:42,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:38:42,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:38:42,839 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:38:42,840 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:38:42,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-12-21 15:38:42,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19a99a6fd/7cea6b189c1b4338b162054941e7665a/FLAG77d36b2e7 [2021-12-21 15:38:43,586 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:38:43,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-12-21 15:38:43,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19a99a6fd/7cea6b189c1b4338b162054941e7665a/FLAG77d36b2e7 [2021-12-21 15:38:43,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19a99a6fd/7cea6b189c1b4338b162054941e7665a [2021-12-21 15:38:43,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:38:43,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:38:43,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:38:43,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:38:43,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:38:43,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:38:43" (1/1) ... [2021-12-21 15:38:43,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b62c576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:43, skipping insertion in model container [2021-12-21 15:38:43,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:38:43" (1/1) ... [2021-12-21 15:38:43,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:38:44,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:38:44,235 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] [2021-12-21 15:38:44,268 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] [2021-12-21 15:38:45,115 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,115 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,116 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,116 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,119 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,166 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,176 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,179 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,179 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,184 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,186 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,187 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,188 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,348 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:38:45,350 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:38:45,352 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:38:45,353 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:38:45,355 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:38:45,356 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:38:45,358 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:38:45,361 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:38:45,363 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:38:45,364 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:38:45,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:38:45,460 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-21 15:38:45,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:38:45,504 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] [2021-12-21 15:38:45,505 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] [2021-12-21 15:38:45,541 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,542 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,542 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,543 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,543 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,549 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,550 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,551 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,551 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,552 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,553 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,553 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,553 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,569 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:38:45,570 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:38:45,570 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:38:45,571 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:38:45,573 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:38:45,573 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:38:45,574 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:38:45,577 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:38:45,578 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:38:45,578 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:38:45,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:38:45,603 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:38:45,630 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] [2021-12-21 15:38:45,639 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] [2021-12-21 15:38:45,680 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,680 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,681 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,681 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,682 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,692 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,693 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,695 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,697 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,698 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,698 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,699 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,701 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-21 15:38:45,722 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-21 15:38:45,723 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-21 15:38:45,733 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-21 15:38:45,734 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-21 15:38:45,735 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-21 15:38:45,735 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-21 15:38:45,736 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-21 15:38:45,736 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-21 15:38:45,736 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-21 15:38:45,737 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-21 15:38:45,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:38:46,045 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:38:46,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:46 WrapperNode [2021-12-21 15:38:46,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:38:46,047 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:38:46,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:38:46,048 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:38:46,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:46" (1/1) ... [2021-12-21 15:38:46,145 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:46" (1/1) ... [2021-12-21 15:38:46,217 INFO L137 Inliner]: procedures = 611, calls = 609, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 85 [2021-12-21 15:38:46,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:38:46,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:38:46,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:38:46,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:38:46,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:46" (1/1) ... [2021-12-21 15:38:46,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:46" (1/1) ... [2021-12-21 15:38:46,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:46" (1/1) ... [2021-12-21 15:38:46,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:46" (1/1) ... [2021-12-21 15:38:46,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:46" (1/1) ... [2021-12-21 15:38:46,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:46" (1/1) ... [2021-12-21 15:38:46,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:46" (1/1) ... [2021-12-21 15:38:46,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:38:46,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:38:46,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:38:46,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:38:46,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:46" (1/1) ... [2021-12-21 15:38:46,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:38:46,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:38:46,328 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) [2021-12-21 15:38:46,356 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 [2021-12-21 15:38:46,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:38:46,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-21 15:38:46,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 15:38:46,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 15:38:46,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:38:46,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:38:46,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:38:46,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-21 15:38:46,386 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 15:38:46,387 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 15:38:46,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:38:46,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-21 15:38:46,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-21 15:38:46,388 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2021-12-21 15:38:46,388 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2021-12-21 15:38:46,388 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-21 15:38:46,389 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-21 15:38:46,722 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:38:46,724 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:38:47,029 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:38:47,037 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:38:47,039 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-21 15:38:47,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:38:47 BoogieIcfgContainer [2021-12-21 15:38:47,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:38:47,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:38:47,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:38:47,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:38:47,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:38:43" (1/3) ... [2021-12-21 15:38:47,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50046c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:38:47, skipping insertion in model container [2021-12-21 15:38:47,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:38:46" (2/3) ... [2021-12-21 15:38:47,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50046c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:38:47, skipping insertion in model container [2021-12-21 15:38:47,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:38:47" (3/3) ... [2021-12-21 15:38:47,051 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_override_0_harness.i [2021-12-21 15:38:47,057 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:38:47,057 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 15:38:47,111 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:38:47,122 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 [2021-12-21 15:38:47,122 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 15:38:47,138 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) [2021-12-21 15:38:47,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-21 15:38:47,145 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:38:47,146 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] [2021-12-21 15:38:47,147 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:38:47,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:38:47,152 INFO L85 PathProgramCache]: Analyzing trace with hash 16590849, now seen corresponding path program 1 times [2021-12-21 15:38:47,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 15:38:47,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708805277] [2021-12-21 15:38:47,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:38:47,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 15:38:47,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 15:38:47,164 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) [2021-12-21 15:38:47,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-21 15:38:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:38:47,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 15:38:47,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:38:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-21 15:38:47,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:38:47,422 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 15:38:47,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708805277] [2021-12-21 15:38:47,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708805277] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:38:47,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:38:47,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 15:38:47,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837613476] [2021-12-21 15:38:47,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:38:47,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 15:38:47,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 15:38:47,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 15:38:47,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 15:38:47,459 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) [2021-12-21 15:38:47,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:38:47,491 INFO L93 Difference]: Finished difference Result 117 states and 167 transitions. [2021-12-21 15:38:47,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 15:38:47,494 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 [2021-12-21 15:38:47,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:38:47,499 INFO L225 Difference]: With dead ends: 117 [2021-12-21 15:38:47,499 INFO L226 Difference]: Without dead ends: 52 [2021-12-21 15:38:47,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 15:38:47,505 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 [2021-12-21 15:38:47,506 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] [2021-12-21 15:38:47,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-21 15:38:47,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-12-21 15:38:47,532 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) [2021-12-21 15:38:47,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2021-12-21 15:38:47,535 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 36 [2021-12-21 15:38:47,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:38:47,536 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2021-12-21 15:38:47,536 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) [2021-12-21 15:38:47,536 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2021-12-21 15:38:47,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-21 15:38:47,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:38:47,538 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] [2021-12-21 15:38:47,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-21 15:38:47,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 15:38:47,740 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:38:47,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:38:47,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1271235587, now seen corresponding path program 1 times [2021-12-21 15:38:47,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 15:38:47,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311173710] [2021-12-21 15:38:47,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:38:47,742 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 15:38:47,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 15:38:47,743 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) [2021-12-21 15:38:47,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-21 15:38:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:38:47,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 15:38:47,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:38:48,132 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-21 15:38:48,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:38:48,301 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-21 15:38:48,302 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 15:38:48,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311173710] [2021-12-21 15:38:48,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311173710] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:38:48,306 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:38:48,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-12-21 15:38:48,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764200851] [2021-12-21 15:38:48,333 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:38:48,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 15:38:48,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 15:38:48,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 15:38:48,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:38:48,364 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) [2021-12-21 15:38:48,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:38:48,720 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2021-12-21 15:38:48,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:38:48,722 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 [2021-12-21 15:38:48,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:38:48,723 INFO L225 Difference]: With dead ends: 58 [2021-12-21 15:38:48,723 INFO L226 Difference]: Without dead ends: 56 [2021-12-21 15:38:48,724 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 [2021-12-21 15:38:48,725 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 46 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 15:38:48,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 262 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 15:38:48,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-21 15:38:48,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-21 15:38:48,740 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) [2021-12-21 15:38:48,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2021-12-21 15:38:48,746 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 36 [2021-12-21 15:38:48,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:38:48,747 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2021-12-21 15:38:48,748 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) [2021-12-21 15:38:48,748 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2021-12-21 15:38:48,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-21 15:38:48,751 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:38:48,751 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] [2021-12-21 15:38:48,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-21 15:38:48,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 15:38:48,964 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:38:48,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:38:48,965 INFO L85 PathProgramCache]: Analyzing trace with hash 2010040638, now seen corresponding path program 1 times [2021-12-21 15:38:48,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 15:38:48,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957692532] [2021-12-21 15:38:48,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:38:48,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 15:38:48,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 15:38:48,971 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) [2021-12-21 15:38:49,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-21 15:38:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:38:49,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 15:38:49,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:38:49,586 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-21 15:38:49,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:38:51,756 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-21 15:38:51,756 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 15:38:51,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957692532] [2021-12-21 15:38:51,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957692532] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:38:51,757 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:38:51,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-12-21 15:38:51,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946763986] [2021-12-21 15:38:51,757 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:38:51,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-21 15:38:51,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 15:38:51,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-21 15:38:51,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=149, Unknown=1, NotChecked=0, Total=182 [2021-12-21 15:38:51,759 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) [2021-12-21 15:38:52,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:38:52,145 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2021-12-21 15:38:52,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 15:38:52,146 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 [2021-12-21 15:38:52,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:38:52,147 INFO L225 Difference]: With dead ends: 62 [2021-12-21 15:38:52,147 INFO L226 Difference]: Without dead ends: 60 [2021-12-21 15:38:52,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=48, Invalid=223, Unknown=1, NotChecked=0, Total=272 [2021-12-21 15:38:52,148 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 13 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 15:38:52,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 502 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 29 Unchecked, 0.3s Time] [2021-12-21 15:38:52,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-12-21 15:38:52,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-12-21 15:38:52,161 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) [2021-12-21 15:38:52,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2021-12-21 15:38:52,166 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 42 [2021-12-21 15:38:52,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:38:52,166 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2021-12-21 15:38:52,167 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) [2021-12-21 15:38:52,167 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2021-12-21 15:38:52,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-21 15:38:52,168 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:38:52,168 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] [2021-12-21 15:38:52,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-21 15:38:52,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 15:38:52,381 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:38:52,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:38:52,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1110629482, now seen corresponding path program 1 times [2021-12-21 15:38:52,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 15:38:52,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454564062] [2021-12-21 15:38:52,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:38:52,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 15:38:52,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 15:38:52,384 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) [2021-12-21 15:38:52,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-21 15:38:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:38:52,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 15:38:52,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:38:52,764 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-21 15:38:52,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:38:52,764 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 15:38:52,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454564062] [2021-12-21 15:38:52,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454564062] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:38:52,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:38:52,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:38:52,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677711042] [2021-12-21 15:38:52,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:38:52,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:38:52,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 15:38:52,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:38:52,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:38:52,773 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-21 15:38:52,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:38:52,887 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2021-12-21 15:38:52,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:38:52,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 51 [2021-12-21 15:38:52,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:38:52,889 INFO L225 Difference]: With dead ends: 66 [2021-12-21 15:38:52,889 INFO L226 Difference]: Without dead ends: 64 [2021-12-21 15:38:52,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:38:52,890 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 24 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:38:52,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 256 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:38:52,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-21 15:38:52,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-12-21 15:38:52,903 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) [2021-12-21 15:38:52,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2021-12-21 15:38:52,909 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 51 [2021-12-21 15:38:52,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:38:52,911 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2021-12-21 15:38:52,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-21 15:38:52,913 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2021-12-21 15:38:52,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-21 15:38:52,914 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:38:52,915 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] [2021-12-21 15:38:52,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-21 15:38:53,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 15:38:53,127 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:38:53,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:38:53,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1132287315, now seen corresponding path program 1 times [2021-12-21 15:38:53,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 15:38:53,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235608710] [2021-12-21 15:38:53,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:38:53,129 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 15:38:53,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 15:38:53,131 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) [2021-12-21 15:38:53,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-21 15:38:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:38:53,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-21 15:38:53,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:38:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-21 15:38:53,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:38:53,732 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-21 15:38:53,733 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 15:38:53,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235608710] [2021-12-21 15:38:53,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235608710] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-21 15:38:53,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:38:53,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2021-12-21 15:38:53,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950106914] [2021-12-21 15:38:53,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:38:53,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 15:38:53,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 15:38:53,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 15:38:53,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:38:53,734 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) [2021-12-21 15:38:53,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:38:53,856 INFO L93 Difference]: Finished difference Result 107 states and 126 transitions. [2021-12-21 15:38:53,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:38:53,857 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 [2021-12-21 15:38:53,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:38:53,859 INFO L225 Difference]: With dead ends: 107 [2021-12-21 15:38:53,859 INFO L226 Difference]: Without dead ends: 79 [2021-12-21 15:38:53,859 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 [2021-12-21 15:38:53,860 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 30 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:38:53,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 194 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:38:53,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-12-21 15:38:53,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2021-12-21 15:38:53,869 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) [2021-12-21 15:38:53,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2021-12-21 15:38:53,870 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 68 [2021-12-21 15:38:53,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:38:53,871 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2021-12-21 15:38:53,871 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) [2021-12-21 15:38:53,871 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2021-12-21 15:38:53,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-21 15:38:53,872 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:38:53,872 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] [2021-12-21 15:38:53,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-21 15:38:54,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 15:38:54,086 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:38:54,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:38:54,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1524731977, now seen corresponding path program 1 times [2021-12-21 15:38:54,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 15:38:54,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139253122] [2021-12-21 15:38:54,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:38:54,088 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 15:38:54,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 15:38:54,089 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) [2021-12-21 15:38:54,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-21 15:38:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:38:54,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-21 15:38:54,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:38:54,478 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-21 15:38:54,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:38:54,625 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-21 15:38:54,625 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 15:38:54,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139253122] [2021-12-21 15:38:54,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139253122] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-21 15:38:54,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:38:54,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-21 15:38:54,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444110097] [2021-12-21 15:38:54,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:38:54,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 15:38:54,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 15:38:54,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 15:38:54,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-21 15:38:54,627 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) [2021-12-21 15:38:54,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:38:54,656 INFO L93 Difference]: Finished difference Result 131 states and 153 transitions. [2021-12-21 15:38:54,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 15:38:54,658 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 [2021-12-21 15:38:54,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:38:54,659 INFO L225 Difference]: With dead ends: 131 [2021-12-21 15:38:54,659 INFO L226 Difference]: Without dead ends: 78 [2021-12-21 15:38:54,659 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 [2021-12-21 15:38:54,660 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 [2021-12-21 15:38:54,661 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] [2021-12-21 15:38:54,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-12-21 15:38:54,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-12-21 15:38:54,670 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) [2021-12-21 15:38:54,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2021-12-21 15:38:54,671 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 69 [2021-12-21 15:38:54,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:38:54,671 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2021-12-21 15:38:54,671 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) [2021-12-21 15:38:54,671 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2021-12-21 15:38:54,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-21 15:38:54,672 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:38:54,673 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] [2021-12-21 15:38:54,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-21 15:38:54,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 15:38:54,889 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:38:54,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:38:54,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1383518092, now seen corresponding path program 1 times [2021-12-21 15:38:54,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 15:38:54,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026263336] [2021-12-21 15:38:54,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:38:54,891 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 15:38:54,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 15:38:54,892 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) [2021-12-21 15:38:54,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-21 15:38:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:38:55,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-21 15:38:55,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:38:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-21 15:38:55,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:38:55,596 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-21 15:38:55,597 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 15:38:55,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026263336] [2021-12-21 15:38:55,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026263336] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-21 15:38:55,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:38:55,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 13 [2021-12-21 15:38:55,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930378929] [2021-12-21 15:38:55,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:38:55,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:38:55,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 15:38:55,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:38:55,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-12-21 15:38:55,598 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) [2021-12-21 15:38:55,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:38:55,695 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2021-12-21 15:38:55,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:38:55,695 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 [2021-12-21 15:38:55,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:38:55,696 INFO L225 Difference]: With dead ends: 100 [2021-12-21 15:38:55,696 INFO L226 Difference]: Without dead ends: 65 [2021-12-21 15:38:55,697 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 [2021-12-21 15:38:55,697 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 25 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:38:55,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 272 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:38:55,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-21 15:38:55,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-12-21 15:38:55,704 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) [2021-12-21 15:38:55,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2021-12-21 15:38:55,705 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 72 [2021-12-21 15:38:55,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:38:55,705 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2021-12-21 15:38:55,706 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) [2021-12-21 15:38:55,706 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2021-12-21 15:38:55,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-21 15:38:55,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:38:55,707 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] [2021-12-21 15:38:55,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-21 15:38:55,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 15:38:55,908 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:38:55,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:38:55,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1069315495, now seen corresponding path program 1 times [2021-12-21 15:38:55,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 15:38:55,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911769855] [2021-12-21 15:38:55,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:38:55,909 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 15:38:55,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 15:38:55,910 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) [2021-12-21 15:38:55,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-21 15:38:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:38:56,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-21 15:38:56,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:38:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-21 15:38:56,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:38:56,771 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-21 15:38:56,771 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 15:38:56,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911769855] [2021-12-21 15:38:56,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911769855] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:38:56,771 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:38:56,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-12-21 15:38:56,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780140223] [2021-12-21 15:38:56,772 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:38:56,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-21 15:38:56,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 15:38:56,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-21 15:38:56,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-12-21 15:38:56,773 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) [2021-12-21 15:38:56,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:38:56,932 INFO L93 Difference]: Finished difference Result 122 states and 139 transitions. [2021-12-21 15:38:56,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 15:38:56,933 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 [2021-12-21 15:38:56,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:38:56,933 INFO L225 Difference]: With dead ends: 122 [2021-12-21 15:38:56,933 INFO L226 Difference]: Without dead ends: 69 [2021-12-21 15:38:56,934 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 [2021-12-21 15:38:56,935 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 4 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:38:56,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 491 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 15 Unchecked, 0.1s Time] [2021-12-21 15:38:56,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-21 15:38:56,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-12-21 15:38:56,942 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) [2021-12-21 15:38:56,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2021-12-21 15:38:56,943 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 71 [2021-12-21 15:38:56,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:38:56,943 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2021-12-21 15:38:56,943 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) [2021-12-21 15:38:56,943 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2021-12-21 15:38:56,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-21 15:38:56,944 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:38:56,944 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] [2021-12-21 15:38:56,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-21 15:38:57,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 15:38:57,158 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:38:57,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:38:57,158 INFO L85 PathProgramCache]: Analyzing trace with hash 511671837, now seen corresponding path program 2 times [2021-12-21 15:38:57,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 15:38:57,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281605145] [2021-12-21 15:38:57,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:38:57,159 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 15:38:57,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 15:38:57,160 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) [2021-12-21 15:38:57,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-21 15:38:57,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 15:38:57,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:38:57,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-21 15:38:57,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:38:57,801 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-21 15:38:57,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:38:58,402 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-21 15:38:58,402 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 15:38:58,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281605145] [2021-12-21 15:38:58,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281605145] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:38:58,402 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:38:58,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2021-12-21 15:38:58,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127544876] [2021-12-21 15:38:58,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:38:58,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-21 15:38:58,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 15:38:58,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-21 15:38:58,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-12-21 15:38:58,404 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) [2021-12-21 15:38:59,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:38:59,079 INFO L93 Difference]: Finished difference Result 130 states and 149 transitions. [2021-12-21 15:38:59,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-21 15:38:59,080 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 [2021-12-21 15:38:59,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:38:59,081 INFO L225 Difference]: With dead ends: 130 [2021-12-21 15:38:59,081 INFO L226 Difference]: Without dead ends: 77 [2021-12-21 15:38:59,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-21 15:38:59,082 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:38:59,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 507 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 21 Unchecked, 0.1s Time] [2021-12-21 15:38:59,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-12-21 15:38:59,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-12-21 15:38:59,090 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) [2021-12-21 15:38:59,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2021-12-21 15:38:59,091 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 75 [2021-12-21 15:38:59,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:38:59,091 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2021-12-21 15:38:59,091 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) [2021-12-21 15:38:59,092 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2021-12-21 15:38:59,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-21 15:38:59,092 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:38:59,093 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] [2021-12-21 15:38:59,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-21 15:38:59,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 15:38:59,306 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:38:59,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:38:59,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1085153371, now seen corresponding path program 3 times [2021-12-21 15:38:59,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 15:38:59,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898160827] [2021-12-21 15:38:59,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 15:38:59,307 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 15:38:59,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 15:38:59,308 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) [2021-12-21 15:38:59,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-21 15:38:59,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-21 15:38:59,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:38:59,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-21 15:38:59,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:38:59,780 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-12-21 15:38:59,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:39:00,168 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-21 15:39:00,168 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 15:39:00,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898160827] [2021-12-21 15:39:00,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898160827] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:39:00,169 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:39:00,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-12-21 15:39:00,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607468735] [2021-12-21 15:39:00,169 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:39:00,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-21 15:39:00,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 15:39:00,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-21 15:39:00,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-12-21 15:39:00,171 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) [2021-12-21 15:39:00,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:39:00,871 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2021-12-21 15:39:00,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 15:39:00,872 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 [2021-12-21 15:39:00,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:39:00,875 INFO L225 Difference]: With dead ends: 113 [2021-12-21 15:39:00,875 INFO L226 Difference]: Without dead ends: 85 [2021-12-21 15:39:00,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-12-21 15:39:00,876 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 61 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 15:39:00,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 445 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 111 Invalid, 0 Unknown, 16 Unchecked, 0.5s Time] [2021-12-21 15:39:00,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-21 15:39:00,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2021-12-21 15:39:00,898 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) [2021-12-21 15:39:00,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 94 transitions. [2021-12-21 15:39:00,901 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 94 transitions. Word has length 83 [2021-12-21 15:39:00,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:39:00,902 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 94 transitions. [2021-12-21 15:39:00,903 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) [2021-12-21 15:39:00,903 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 94 transitions. [2021-12-21 15:39:00,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-21 15:39:00,904 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:39:00,904 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] [2021-12-21 15:39:00,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-21 15:39:01,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 15:39:01,107 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:39:01,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:39:01,108 INFO L85 PathProgramCache]: Analyzing trace with hash -2075883641, now seen corresponding path program 1 times [2021-12-21 15:39:01,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 15:39:01,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928574995] [2021-12-21 15:39:01,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:39:01,109 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 15:39:01,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 15:39:01,110 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) [2021-12-21 15:39:01,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-21 15:39:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:39:01,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-21 15:39:01,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:39:02,583 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 38 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-21 15:39:02,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:39:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 9 proven. 61 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-12-21 15:39:03,885 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 15:39:03,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928574995] [2021-12-21 15:39:03,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928574995] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:39:03,885 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:39:03,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 26 [2021-12-21 15:39:03,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667301966] [2021-12-21 15:39:03,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:39:03,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-21 15:39:03,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 15:39:03,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-21 15:39:03,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2021-12-21 15:39:03,887 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) [2021-12-21 15:39:04,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:39:04,183 INFO L93 Difference]: Finished difference Result 142 states and 162 transitions. [2021-12-21 15:39:04,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-21 15:39:04,184 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 [2021-12-21 15:39:04,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:39:04,185 INFO L225 Difference]: With dead ends: 142 [2021-12-21 15:39:04,185 INFO L226 Difference]: Without dead ends: 84 [2021-12-21 15:39:04,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2021-12-21 15:39:04,186 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:39:04,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 762 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 38 Unchecked, 0.2s Time] [2021-12-21 15:39:04,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-12-21 15:39:04,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-12-21 15:39:04,211 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) [2021-12-21 15:39:04,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 96 transitions. [2021-12-21 15:39:04,213 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 96 transitions. Word has length 85 [2021-12-21 15:39:04,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:39:04,213 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 96 transitions. [2021-12-21 15:39:04,213 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) [2021-12-21 15:39:04,213 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 96 transitions. [2021-12-21 15:39:04,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-21 15:39:04,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:39:04,216 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] [2021-12-21 15:39:04,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-21 15:39:04,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 15:39:04,430 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:39:04,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:39:04,431 INFO L85 PathProgramCache]: Analyzing trace with hash 24387113, now seen corresponding path program 2 times [2021-12-21 15:39:04,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 15:39:04,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832480783] [2021-12-21 15:39:04,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:39:04,432 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 15:39:04,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 15:39:04,433 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) [2021-12-21 15:39:04,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-21 15:39:05,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 15:39:05,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:39:05,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 94 conjunts are in the unsatisfiable core [2021-12-21 15:39:05,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:39:05,436 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-21 15:39:05,951 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-21 15:39:06,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:06,209 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-21 15:39:06,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:06,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:06,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:06,535 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2021-12-21 15:39:06,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:06,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:06,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:06,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:06,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:06,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:06,830 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 48 [2021-12-21 15:39:07,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,219 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 62 [2021-12-21 15:39:07,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:07,654 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 76 [2021-12-21 15:39:08,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,103 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 87 [2021-12-21 15:39:08,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:08,573 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 29 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 93 [2021-12-21 15:39:11,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:11,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:39:11,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:39:11,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:39:11,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:39:11,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:39:11,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:39:11,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:39:11,507 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 57 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 173 [2021-12-21 15:39:17,419 INFO L353 Elim1Store]: treesize reduction 122, result has 5.4 percent of original size [2021-12-21 15:39:17,420 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 29 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 16 case distinctions, treesize of input 127 treesize of output 61 [2021-12-21 15:39:17,637 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 35 proven. 89 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-21 15:39:17,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:39:18,130 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 15:39:18,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832480783] [2021-12-21 15:39:18,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832480783] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:39:18,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1056807725] [2021-12-21 15:39:18,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:39:18,131 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-21 15:39:18,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-21 15:39:18,133 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-21 15:39:18,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-12-21 15:39:19,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 15:39:19,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:39:19,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 88 conjunts are in the unsatisfiable core [2021-12-21 15:39:19,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:39:19,166 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-21 15:39:20,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:20,070 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-21 15:39:20,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:20,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:39:20,483 INFO L353 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2021-12-21 15:39:20,483 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-12-21 15:39:20,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:20,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:20,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:20,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:20,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:39:20,949 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-21 15:39:20,949 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 45 [2021-12-21 15:39:21,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:21,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:21,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:21,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:21,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:21,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:21,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:21,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:39:21,475 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-21 15:39:21,476 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 58 [2021-12-21 15:39:22,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:39:22,204 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-21 15:39:22,205 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 61 treesize of output 72 [2021-12-21 15:39:22,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:22,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:39:22,899 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-21 15:39:22,899 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 72 treesize of output 86 [2021-12-21 15:39:23,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:23,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:23,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:23,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:23,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:23,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:23,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:23,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:23,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:23,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:23,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:23,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:23,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:23,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:23,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:23,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:23,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:23,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:23,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:23,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:23,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:23,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:23,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:39:23,745 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-21 15:39:23,746 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 100 [2021-12-21 15:39:24,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:24,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:39:24,536 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-21 15:39:24,536 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 7 case distinctions, treesize of input 82 treesize of output 102 [2021-12-21 15:39:29,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:39:29,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:39:29,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:39:29,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:39:29,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:39:29,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:39:29,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:39:29,822 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:39:29,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:39:29,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 15:39:29,838 INFO L353 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2021-12-21 15:39:29,838 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 57 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 9 case distinctions, treesize of input 132 treesize of output 183