./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_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 fd704c0997d5526a33ae946f9f6b6d8e05b412ad44e87cb653981b428eeb987a --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 13:51:31,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 13:51:31,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 13:51:31,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 13:51:31,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 13:51:31,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 13:51:31,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 13:51:31,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 13:51:31,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 13:51:31,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 13:51:31,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 13:51:31,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 13:51:31,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 13:51:31,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 13:51:31,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 13:51:31,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 13:51:31,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 13:51:31,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 13:51:31,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 13:51:31,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 13:51:31,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 13:51:31,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 13:51:31,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 13:51:31,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 13:51:31,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 13:51:31,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 13:51:31,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 13:51:31,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 13:51:31,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 13:51:31,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 13:51:31,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 13:51:31,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 13:51:31,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 13:51:31,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 13:51:31,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 13:51:31,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 13:51:31,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 13:51:31,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 13:51:31,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 13:51:31,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 13:51:31,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 13:51:31,908 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 13:51:31,932 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 13:51:31,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 13:51:31,933 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 13:51:31,933 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 13:51:31,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 13:51:31,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 13:51:31,934 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 13:51:31,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 13:51:31,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 13:51:31,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 13:51:31,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 13:51:31,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 13:51:31,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 13:51:31,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 13:51:31,936 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 13:51:31,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 13:51:31,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 13:51:31,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 13:51:31,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 13:51:31,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 13:51:31,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 13:51:31,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 13:51:31,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 13:51:31,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 13:51:31,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 13:51:31,938 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 13:51:31,938 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 13:51:31,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 13:51:31,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 13:51:31,938 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd704c0997d5526a33ae946f9f6b6d8e05b412ad44e87cb653981b428eeb987a [2021-11-02 13:51:32,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 13:51:32,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 13:51:32,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 13:51:32,159 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 13:51:32,160 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 13:51:32,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i [2021-11-02 13:51:32,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8711a37b/9c1b032b921f4c2086aaccb3ee2454bb/FLAGd087e5b18 [2021-11-02 13:51:32,818 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 13:51:32,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i [2021-11-02 13:51:32,848 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8711a37b/9c1b032b921f4c2086aaccb3ee2454bb/FLAGd087e5b18 [2021-11-02 13:51:33,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8711a37b/9c1b032b921f4c2086aaccb3ee2454bb [2021-11-02 13:51:33,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 13:51:33,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 13:51:33,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 13:51:33,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 13:51:33,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 13:51:33,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 01:51:33" (1/1) ... [2021-11-02 13:51:33,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3418af2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:33, skipping insertion in model container [2021-11-02 13:51:33,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 01:51:33" (1/1) ... [2021-11-02 13:51:33,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 13:51:33,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 13:51:33,528 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4505,4518] [2021-11-02 13:51:33,534 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4565,4578] [2021-11-02 13:51:33,554 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 13:51:33,559 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 13:51:33,982 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 13:51:34,023 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:34,024 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:34,025 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:34,026 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:34,026 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:34,044 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:34,045 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:34,046 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:34,047 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:34,242 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 13:51:34,244 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 13:51:34,245 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 13:51:34,250 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 13:51:34,252 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 13:51:34,254 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 13:51:34,255 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 13:51:34,256 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 13:51:34,257 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 13:51:34,257 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 13:51:34,338 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:34,339 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:34,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 13:51:34,407 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 13:51:34,426 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4505,4518] [2021-11-02 13:51:34,428 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness.i[4565,4578] [2021-11-02 13:51:34,429 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 13:51:34,430 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 13:51:34,459 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 13:51:34,523 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:34,535 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:34,536 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:34,537 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:34,537 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:34,542 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:34,547 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:34,548 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:34,548 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:34,596 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 13:51:34,597 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 13:51:34,597 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 13:51:34,598 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 13:51:34,598 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 13:51:34,599 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 13:51:34,599 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 13:51:34,599 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 13:51:34,600 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 13:51:34,600 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 13:51:34,626 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:34,627 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:51:34,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 13:51:34,812 INFO L208 MainTranslator]: Completed translation [2021-11-02 13:51:34,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:34 WrapperNode [2021-11-02 13:51:34,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 13:51:34,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 13:51:34,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 13:51:34,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 13:51:34,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:34" (1/1) ... [2021-11-02 13:51:34,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:34" (1/1) ... [2021-11-02 13:51:34,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 13:51:34,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 13:51:34,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 13:51:34,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 13:51:34,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:34" (1/1) ... [2021-11-02 13:51:34,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:34" (1/1) ... [2021-11-02 13:51:34,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:34" (1/1) ... [2021-11-02 13:51:34,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:34" (1/1) ... [2021-11-02 13:51:35,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:34" (1/1) ... [2021-11-02 13:51:35,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:34" (1/1) ... [2021-11-02 13:51:35,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:34" (1/1) ... [2021-11-02 13:51:35,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 13:51:35,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 13:51:35,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 13:51:35,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 13:51:35,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:34" (1/1) ... [2021-11-02 13:51:35,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 13:51:35,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:51:35,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 13:51:35,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 13:51:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 13:51:35,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 13:51:35,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 13:51:35,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 13:51:35,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 13:51:35,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 13:51:35,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 13:51:35,148 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-02 13:51:35,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 13:51:35,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 13:51:35,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 13:51:35,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 13:51:39,267 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 13:51:39,267 INFO L299 CfgBuilder]: Removed 209 assume(true) statements. [2021-11-02 13:51:39,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 01:51:39 BoogieIcfgContainer [2021-11-02 13:51:39,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 13:51:39,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 13:51:39,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 13:51:39,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 13:51:39,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 01:51:33" (1/3) ... [2021-11-02 13:51:39,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc6400b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 01:51:39, skipping insertion in model container [2021-11-02 13:51:39,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:51:34" (2/3) ... [2021-11-02 13:51:39,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc6400b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 01:51:39, skipping insertion in model container [2021-11-02 13:51:39,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 01:51:39" (3/3) ... [2021-11-02 13:51:39,274 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_dynamic_harness.i [2021-11-02 13:51:39,278 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 13:51:39,278 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-11-02 13:51:39,308 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 13:51:39,312 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 13:51:39,313 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-11-02 13:51:39,332 INFO L276 IsEmpty]: Start isEmpty. Operand has 281 states, 267 states have (on average 1.4644194756554307) internal successors, (391), 280 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:51:39,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-02 13:51:39,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:51:39,337 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:51:39,338 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:51:39,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:51:39,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1877814829, now seen corresponding path program 1 times [2021-11-02 13:51:39,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:51:39,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763711100] [2021-11-02 13:51:39,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:51:39,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:51:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:51:39,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:51:39,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:51:39,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763711100] [2021-11-02 13:51:39,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763711100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:51:39,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:51:39,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 13:51:39,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248938676] [2021-11-02 13:51:39,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 13:51:39,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:51:39,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 13:51:39,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 13:51:39,842 INFO L87 Difference]: Start difference. First operand has 281 states, 267 states have (on average 1.4644194756554307) internal successors, (391), 280 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:51:41,899 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:51:43,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:51:43,159 INFO L93 Difference]: Finished difference Result 558 states and 777 transitions. [2021-11-02 13:51:43,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 13:51:43,162 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-02 13:51:43,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:51:43,168 INFO L225 Difference]: With dead ends: 558 [2021-11-02 13:51:43,168 INFO L226 Difference]: Without dead ends: 274 [2021-11-02 13:51:43,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 13:51:43,175 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2897.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.96ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3253.31ms IncrementalHoareTripleChecker+Time [2021-11-02 13:51:43,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 350 Unknown, 0 Unchecked, 3.96ms Time], IncrementalHoareTripleChecker [0 Valid, 349 Invalid, 1 Unknown, 0 Unchecked, 3253.31ms Time] [2021-11-02 13:51:43,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-11-02 13:51:43,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2021-11-02 13:51:43,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 261 states have (on average 1.3103448275862069) internal successors, (342), 273 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:51:43,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 342 transitions. [2021-11-02 13:51:43,242 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 342 transitions. Word has length 42 [2021-11-02 13:51:43,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:51:43,243 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 342 transitions. [2021-11-02 13:51:43,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:51:43,243 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 342 transitions. [2021-11-02 13:51:43,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 13:51:43,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:51:43,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:51:43,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 13:51:43,245 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:51:43,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:51:43,245 INFO L85 PathProgramCache]: Analyzing trace with hash 726142253, now seen corresponding path program 1 times [2021-11-02 13:51:43,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:51:43,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595321336] [2021-11-02 13:51:43,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:51:43,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:51:43,324 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:51:43,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422262083] [2021-11-02 13:51:43,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:51:43,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:51:43,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:51:43,340 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:51:43,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 13:51:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:51:44,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 2509 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 13:51:44,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:51:44,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:51:44,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:51:44,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:51:44,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595321336] [2021-11-02 13:51:44,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:51:44,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422262083] [2021-11-02 13:51:44,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422262083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:51:44,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:51:44,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 13:51:44,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937443620] [2021-11-02 13:51:44,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 13:51:44,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:51:44,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 13:51:44,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 13:51:44,350 INFO L87 Difference]: Start difference. First operand 274 states and 342 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:51:46,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:51:47,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:51:47,789 INFO L93 Difference]: Finished difference Result 519 states and 652 transitions. [2021-11-02 13:51:47,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 13:51:47,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-02 13:51:47,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:51:47,791 INFO L225 Difference]: With dead ends: 519 [2021-11-02 13:51:47,791 INFO L226 Difference]: Without dead ends: 274 [2021-11-02 13:51:47,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.90ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 13:51:47,793 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 312 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3080.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.02ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3371.94ms IncrementalHoareTripleChecker+Time [2021-11-02 13:51:47,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 0 Invalid, 366 Unknown, 0 Unchecked, 5.02ms Time], IncrementalHoareTripleChecker [2 Valid, 363 Invalid, 1 Unknown, 0 Unchecked, 3371.94ms Time] [2021-11-02 13:51:47,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-11-02 13:51:47,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2021-11-02 13:51:47,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 261 states have (on average 1.3026819923371646) internal successors, (340), 273 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:51:47,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 340 transitions. [2021-11-02 13:51:47,807 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 340 transitions. Word has length 54 [2021-11-02 13:51:47,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:51:47,808 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 340 transitions. [2021-11-02 13:51:47,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:51:47,808 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 340 transitions. [2021-11-02 13:51:47,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-02 13:51:47,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:51:47,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:51:47,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 13:51:48,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:51:48,012 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:51:48,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:51:48,014 INFO L85 PathProgramCache]: Analyzing trace with hash -657350258, now seen corresponding path program 1 times [2021-11-02 13:51:48,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:51:48,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718493504] [2021-11-02 13:51:48,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:51:48,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:51:48,108 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:51:48,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1238500110] [2021-11-02 13:51:48,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:51:48,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:51:48,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:51:48,110 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:51:48,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 13:51:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:51:48,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 2523 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 13:51:48,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:51:48,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:51:48,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:51:48,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:51:48,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718493504] [2021-11-02 13:51:48,915 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:51:48,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238500110] [2021-11-02 13:51:48,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238500110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:51:48,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:51:48,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:51:48,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365497590] [2021-11-02 13:51:48,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:51:48,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:51:48,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:51:48,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:51:48,917 INFO L87 Difference]: Start difference. First operand 274 states and 340 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:51:50,964 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:51:56,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:51:56,043 INFO L93 Difference]: Finished difference Result 686 states and 862 transitions. [2021-11-02 13:51:56,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:51:56,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-02 13:51:56,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:51:56,046 INFO L225 Difference]: With dead ends: 686 [2021-11-02 13:51:56,046 INFO L226 Difference]: Without dead ends: 513 [2021-11-02 13:51:56,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 102.80ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:51:56,047 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 573 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6399.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.44ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6931.16ms IncrementalHoareTripleChecker+Time [2021-11-02 13:51:56,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 0 Invalid, 1692 Unknown, 0 Unchecked, 31.44ms Time], IncrementalHoareTripleChecker [14 Valid, 1677 Invalid, 1 Unknown, 0 Unchecked, 6931.16ms Time] [2021-11-02 13:51:56,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-11-02 13:51:56,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 277. [2021-11-02 13:51:56,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 264 states have (on average 1.2992424242424243) internal successors, (343), 276 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:51:56,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 343 transitions. [2021-11-02 13:51:56,058 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 343 transitions. Word has length 56 [2021-11-02 13:51:56,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:51:56,058 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 343 transitions. [2021-11-02 13:51:56,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:51:56,059 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 343 transitions. [2021-11-02 13:51:56,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-02 13:51:56,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:51:56,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:51:56,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-02 13:51:56,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-02 13:51:56,284 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:51:56,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:51:56,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1018083516, now seen corresponding path program 1 times [2021-11-02 13:51:56,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:51:56,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875778111] [2021-11-02 13:51:56,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:51:56,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:51:56,348 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:51:56,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2035871437] [2021-11-02 13:51:56,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:51:56,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:51:56,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:51:56,368 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:51:56,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 13:51:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:51:56,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 2512 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 13:51:56,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:51:57,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:51:57,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:51:57,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:51:57,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875778111] [2021-11-02 13:51:57,214 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:51:57,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035871437] [2021-11-02 13:51:57,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035871437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:51:57,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:51:57,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:51:57,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709879285] [2021-11-02 13:51:57,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:51:57,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:51:57,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:51:57,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:51:57,215 INFO L87 Difference]: Start difference. First operand 277 states and 343 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:51:59,251 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:52:06,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:52:06,104 INFO L93 Difference]: Finished difference Result 545 states and 679 transitions. [2021-11-02 13:52:06,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 13:52:06,105 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-02 13:52:06,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:52:06,106 INFO L225 Difference]: With dead ends: 545 [2021-11-02 13:52:06,107 INFO L226 Difference]: Without dead ends: 543 [2021-11-02 13:52:06,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 294.48ms TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-11-02 13:52:06,108 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 646 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 2674 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7987.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.45ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2674 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8564.63ms IncrementalHoareTripleChecker+Time [2021-11-02 13:52:06,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [646 Valid, 0 Invalid, 2689 Unknown, 0 Unchecked, 25.45ms Time], IncrementalHoareTripleChecker [14 Valid, 2674 Invalid, 1 Unknown, 0 Unchecked, 8564.63ms Time] [2021-11-02 13:52:06,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-11-02 13:52:06,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 279. [2021-11-02 13:52:06,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 266 states have (on average 1.2969924812030076) internal successors, (345), 278 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:52:06,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 345 transitions. [2021-11-02 13:52:06,117 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 345 transitions. Word has length 56 [2021-11-02 13:52:06,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:52:06,118 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 345 transitions. [2021-11-02 13:52:06,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:52:06,121 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 345 transitions. [2021-11-02 13:52:06,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-02 13:52:06,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:52:06,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:52:06,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 13:52:06,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:52:06,323 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:52:06,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:52:06,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1018023934, now seen corresponding path program 1 times [2021-11-02 13:52:06,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:52:06,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118989739] [2021-11-02 13:52:06,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:52:06,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:52:06,407 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:52:06,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619146534] [2021-11-02 13:52:06,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:52:06,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:52:06,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:52:06,409 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:52:06,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 13:54:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:54:32,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 2517 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-02 13:54:32,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:54:32,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:54:32,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:54:32,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:54:32,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118989739] [2021-11-02 13:54:32,843 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:54:32,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619146534] [2021-11-02 13:54:32,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619146534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:54:32,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:54:32,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:54:32,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835986691] [2021-11-02 13:54:32,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:54:32,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:54:32,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:54:32,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:54:32,844 INFO L87 Difference]: Start difference. First operand 279 states and 345 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:54:34,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:54:37,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:54:37,076 INFO L93 Difference]: Finished difference Result 533 states and 665 transitions. [2021-11-02 13:54:37,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:54:37,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-02 13:54:37,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:54:37,089 INFO L225 Difference]: With dead ends: 533 [2021-11-02 13:54:37,090 INFO L226 Difference]: Without dead ends: 283 [2021-11-02 13:54:37,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.15ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:54:37,091 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 316 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3859.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.37ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4183.31ms IncrementalHoareTripleChecker+Time [2021-11-02 13:54:37,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 0 Invalid, 682 Unknown, 0 Unchecked, 4.37ms Time], IncrementalHoareTripleChecker [5 Valid, 676 Invalid, 1 Unknown, 0 Unchecked, 4183.31ms Time] [2021-11-02 13:54:37,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-11-02 13:54:37,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 281. [2021-11-02 13:54:37,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 268 states have (on average 1.294776119402985) internal successors, (347), 280 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:54:37,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 347 transitions. [2021-11-02 13:54:37,111 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 347 transitions. Word has length 56 [2021-11-02 13:54:37,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:54:37,111 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 347 transitions. [2021-11-02 13:54:37,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:54:37,111 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 347 transitions. [2021-11-02 13:54:37,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-02 13:54:37,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:54:37,112 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:54:37,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-02 13:54:37,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:54:37,320 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 13:54:37,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:54:37,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1604623586, now seen corresponding path program 1 times [2021-11-02 13:54:37,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:54:37,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719061545] [2021-11-02 13:54:37,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:54:37,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:54:37,407 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:54:37,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1946940414] [2021-11-02 13:54:37,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:54:37,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:54:37,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:54:37,424 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 13:54:37,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 14:02:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:02:10,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-02 14:02:10,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:02:11,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 14:02:11,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:02:11,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 14:02:11,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:02:11,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719061545] [2021-11-02 14:02:11,480 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 14:02:11,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946940414] [2021-11-02 14:02:11,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946940414] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 14:02:11,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 14:02:11,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2021-11-02 14:02:11,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195612921] [2021-11-02 14:02:11,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 14:02:11,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:02:11,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 14:02:11,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 14:02:11,481 INFO L87 Difference]: Start difference. First operand 281 states and 347 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:02:13,534 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:02:19,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:02:19,999 INFO L93 Difference]: Finished difference Result 544 states and 680 transitions. [2021-11-02 14:02:20,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 14:02:20,001 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-02 14:02:20,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:02:20,002 INFO L225 Difference]: With dead ends: 544 [2021-11-02 14:02:20,002 INFO L226 Difference]: Without dead ends: 293 [2021-11-02 14:02:20,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 360.12ms TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-02 14:02:20,003 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 629 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7585.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.08ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8240.36ms IncrementalHoareTripleChecker+Time [2021-11-02 14:02:20,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [629 Valid, 0 Invalid, 1769 Unknown, 0 Unchecked, 29.08ms Time], IncrementalHoareTripleChecker [27 Valid, 1741 Invalid, 1 Unknown, 0 Unchecked, 8240.36ms Time] [2021-11-02 14:02:20,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-02 14:02:20,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2021-11-02 14:02:20,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 280 states have (on average 1.2821428571428573) internal successors, (359), 292 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:02:20,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 359 transitions. [2021-11-02 14:02:20,013 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 359 transitions. Word has length 60 [2021-11-02 14:02:20,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:02:20,013 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 359 transitions. [2021-11-02 14:02:20,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 14:02:20,014 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 359 transitions. [2021-11-02 14:02:20,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 14:02:20,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:02:20,015 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:02:20,234 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2021-11-02 14:02:20,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2021-11-02 14:02:20,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:02:20,296 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-02 14:02:20,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:02:20,296 INFO L85 PathProgramCache]: Analyzing trace with hash -786237326, now seen corresponding path program 2 times [2021-11-02 14:02:20,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:02:20,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360594156] [2021-11-02 14:02:20,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:02:20,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:02:20,355 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 14:02:20,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1798592189] [2021-11-02 14:02:20,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 14:02:20,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:02:20,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:02:20,372 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 14:02:20,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process Killed by 15