./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_capacity_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_array_list_capacity_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 d58b6cbe3dbcae2c6bf4b35286cc82fa39ed49d435b7e41930b97647d699f843 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 12:09:25,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 12:09:25,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 12:09:25,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 12:09:25,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 12:09:25,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 12:09:25,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 12:09:25,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 12:09:25,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 12:09:25,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 12:09:25,157 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 12:09:25,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 12:09:25,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 12:09:25,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 12:09:25,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 12:09:25,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 12:09:25,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 12:09:25,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 12:09:25,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 12:09:25,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 12:09:25,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 12:09:25,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 12:09:25,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 12:09:25,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 12:09:25,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 12:09:25,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 12:09:25,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 12:09:25,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 12:09:25,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 12:09:25,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 12:09:25,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 12:09:25,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 12:09:25,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 12:09:25,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 12:09:25,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 12:09:25,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 12:09:25,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 12:09:25,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 12:09:25,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 12:09:25,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 12:09:25,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 12:09:25,197 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 12:09:25,225 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 12:09:25,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 12:09:25,226 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 12:09:25,226 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 12:09:25,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 12:09:25,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 12:09:25,228 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 12:09:25,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 12:09:25,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 12:09:25,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 12:09:25,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 12:09:25,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 12:09:25,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 12:09:25,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 12:09:25,230 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 12:09:25,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 12:09:25,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 12:09:25,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 12:09:25,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 12:09:25,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 12:09:25,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 12:09:25,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 12:09:25,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 12:09:25,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 12:09:25,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 12:09:25,233 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 12:09:25,233 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 12:09:25,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 12:09:25,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 12:09:25,235 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d58b6cbe3dbcae2c6bf4b35286cc82fa39ed49d435b7e41930b97647d699f843 [2021-11-02 12:09:25,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 12:09:25,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 12:09:25,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 12:09:25,461 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 12:09:25,464 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 12:09:25,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i [2021-11-02 12:09:25,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5a271149/5a54d8929d9a432faf32454fba38c477/FLAGea7ad552c [2021-11-02 12:09:26,118 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 12:09:26,119 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i [2021-11-02 12:09:26,151 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5a271149/5a54d8929d9a432faf32454fba38c477/FLAGea7ad552c [2021-11-02 12:09:26,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5a271149/5a54d8929d9a432faf32454fba38c477 [2021-11-02 12:09:26,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 12:09:26,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 12:09:26,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 12:09:26,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 12:09:26,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 12:09:26,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:09:26" (1/1) ... [2021-11-02 12:09:26,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d9d9f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:09:26, skipping insertion in model container [2021-11-02 12:09:26,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:09:26" (1/1) ... [2021-11-02 12:09:26,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 12:09:26,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 12:09:26,621 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i[4497,4510] [2021-11-02 12:09:26,630 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i[4557,4570] [2021-11-02 12:09:26,648 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 12:09:26,652 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 12:09:27,153 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 12:09:27,213 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,213 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,214 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,214 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,215 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,223 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,224 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,225 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,226 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,227 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,228 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,228 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,228 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,434 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 12:09:27,435 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 12:09:27,436 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 12:09:27,437 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 12:09:27,438 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 12:09:27,438 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 12:09:27,439 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 12:09:27,439 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 12:09:27,440 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 12:09:27,440 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 12:09:27,522 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,527 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 12:09:27,605 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 12:09:27,632 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i[4497,4510] [2021-11-02 12:09:27,634 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_capacity_harness.i[4557,4570] [2021-11-02 12:09:27,635 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 12:09:27,636 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 12:09:27,657 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 12:09:27,668 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,668 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,669 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,669 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,669 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,674 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,675 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,675 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,676 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,677 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,677 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,677 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,678 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,703 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 12:09:27,704 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 12:09:27,705 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 12:09:27,705 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 12:09:27,706 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 12:09:27,707 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 12:09:27,707 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 12:09:27,708 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 12:09:27,708 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 12:09:27,708 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 12:09:27,729 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,733 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:09:27,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 12:09:27,934 INFO L208 MainTranslator]: Completed translation [2021-11-02 12:09:27,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:09:27 WrapperNode [2021-11-02 12:09:27,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 12:09:27,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 12:09:27,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 12:09:27,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 12:09:27,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:09:27" (1/1) ... [2021-11-02 12:09:28,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:09:27" (1/1) ... [2021-11-02 12:09:28,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 12:09:28,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 12:09:28,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 12:09:28,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 12:09:28,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:09:27" (1/1) ... [2021-11-02 12:09:28,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:09:27" (1/1) ... [2021-11-02 12:09:28,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:09:27" (1/1) ... [2021-11-02 12:09:28,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:09:27" (1/1) ... [2021-11-02 12:09:28,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:09:27" (1/1) ... [2021-11-02 12:09:28,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:09:27" (1/1) ... [2021-11-02 12:09:28,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:09:27" (1/1) ... [2021-11-02 12:09:28,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 12:09:28,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 12:09:28,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 12:09:28,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 12:09:28,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:09:27" (1/1) ... [2021-11-02 12:09:28,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 12:09:28,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:09:28,276 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 12:09:28,299 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 12:09:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 12:09:28,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 12:09:28,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 12:09:28,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 12:09:28,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 12:09:28,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 12:09:28,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 12:09:28,322 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-02 12:09:28,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 12:09:28,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 12:09:28,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 12:09:28,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 12:09:33,891 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 12:09:33,891 INFO L299 CfgBuilder]: Removed 110 assume(true) statements. [2021-11-02 12:09:33,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:09:33 BoogieIcfgContainer [2021-11-02 12:09:33,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 12:09:33,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 12:09:33,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 12:09:33,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 12:09:33,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:09:26" (1/3) ... [2021-11-02 12:09:33,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2726a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:09:33, skipping insertion in model container [2021-11-02 12:09:33,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:09:27" (2/3) ... [2021-11-02 12:09:33,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2726a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:09:33, skipping insertion in model container [2021-11-02 12:09:33,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:09:33" (3/3) ... [2021-11-02 12:09:33,902 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_capacity_harness.i [2021-11-02 12:09:33,907 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 12:09:33,908 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-02 12:09:33,952 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 12:09:33,962 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 12:09:33,962 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-02 12:09:33,988 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 123 states have (on average 1.4308943089430894) internal successors, (176), 132 states have internal predecessors, (176), 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 12:09:33,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-02 12:09:33,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:09:33,994 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] [2021-11-02 12:09:33,995 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 12:09:33,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:09:33,999 INFO L85 PathProgramCache]: Analyzing trace with hash -608975248, now seen corresponding path program 1 times [2021-11-02 12:09:34,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:09:34,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535240070] [2021-11-02 12:09:34,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:09:34,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:09:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:09:34,564 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 12:09:34,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:09:34,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535240070] [2021-11-02 12:09:34,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535240070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:09:34,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:09:34,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 12:09:34,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407418843] [2021-11-02 12:09:34,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 12:09:34,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:09:34,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 12:09:34,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 12:09:34,593 INFO L87 Difference]: Start difference. First operand has 133 states, 123 states have (on average 1.4308943089430894) internal successors, (176), 132 states have internal predecessors, (176), 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 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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 12:09:36,669 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:09:37,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:09:37,503 INFO L93 Difference]: Finished difference Result 262 states and 347 transitions. [2021-11-02 12:09:37,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 12:09:37,506 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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 29 [2021-11-02 12:09:37,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:09:37,514 INFO L225 Difference]: With dead ends: 262 [2021-11-02 12:09:37,516 INFO L226 Difference]: Without dead ends: 128 [2021-11-02 12:09:37,519 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 12:09:37,528 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2607.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.80ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2853.58ms IncrementalHoareTripleChecker+Time [2021-11-02 12:09:37,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 159 Unknown, 0 Unchecked, 2.80ms Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 1 Unknown, 0 Unchecked, 2853.58ms Time] [2021-11-02 12:09:37,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-02 12:09:37,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-11-02 12:09:37,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 119 states have (on average 1.2941176470588236) internal successors, (154), 127 states have internal predecessors, (154), 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 12:09:37,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 154 transitions. [2021-11-02 12:09:37,566 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 154 transitions. Word has length 29 [2021-11-02 12:09:37,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:09:37,566 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 154 transitions. [2021-11-02 12:09:37,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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 12:09:37,567 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 154 transitions. [2021-11-02 12:09:37,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-02 12:09:37,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:09:37,568 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] [2021-11-02 12:09:37,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 12:09:37,569 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 12:09:37,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:09:37,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1598932068, now seen corresponding path program 1 times [2021-11-02 12:09:37,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:09:37,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648012366] [2021-11-02 12:09:37,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:09:37,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:09:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:09:37,812 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 12:09:37,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:09:37,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648012366] [2021-11-02 12:09:37,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648012366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:09:37,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:09:37,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 12:09:37,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773028888] [2021-11-02 12:09:37,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 12:09:37,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:09:37,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 12:09:37,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 12:09:37,816 INFO L87 Difference]: Start difference. First operand 128 states and 154 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 12:09:39,868 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 12:09:41,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:09:41,227 INFO L93 Difference]: Finished difference Result 243 states and 293 transitions. [2021-11-02 12:09:41,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 12:09:41,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2021-11-02 12:09:41,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:09:41,229 INFO L225 Difference]: With dead ends: 243 [2021-11-02 12:09:41,229 INFO L226 Difference]: Without dead ends: 129 [2021-11-02 12:09:41,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 12:09:41,231 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2988.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.71ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3369.36ms IncrementalHoareTripleChecker+Time [2021-11-02 12:09:41,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 306 Unknown, 0 Unchecked, 5.71ms Time], IncrementalHoareTripleChecker [0 Valid, 305 Invalid, 1 Unknown, 0 Unchecked, 3369.36ms Time] [2021-11-02 12:09:41,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-02 12:09:41,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-11-02 12:09:41,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 120 states have (on average 1.2916666666666667) internal successors, (155), 128 states have internal predecessors, (155), 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 12:09:41,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 155 transitions. [2021-11-02 12:09:41,239 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 155 transitions. Word has length 29 [2021-11-02 12:09:41,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:09:41,240 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 155 transitions. [2021-11-02 12:09:41,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 12:09:41,240 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 155 transitions. [2021-11-02 12:09:41,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-02 12:09:41,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:09:41,241 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] [2021-11-02 12:09:41,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 12:09:41,242 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 12:09:41,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:09:41,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1732945574, now seen corresponding path program 1 times [2021-11-02 12:09:41,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:09:41,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732583104] [2021-11-02 12:09:41,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:09:41,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:09:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:09:41,481 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 12:09:41,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:09:41,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732583104] [2021-11-02 12:09:41,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732583104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:09:41,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:09:41,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:09:41,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357231905] [2021-11-02 12:09:41,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:09:41,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:09:41,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:09:41,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:09:41,483 INFO L87 Difference]: Start difference. First operand 129 states and 155 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 12:09:43,534 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 12:09:44,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:09:44,480 INFO L93 Difference]: Finished difference Result 226 states and 270 transitions. [2021-11-02 12:09:44,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 12:09:44,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 29 [2021-11-02 12:09:44,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:09:44,482 INFO L225 Difference]: With dead ends: 226 [2021-11-02 12:09:44,482 INFO L226 Difference]: Without dead ends: 129 [2021-11-02 12:09:44,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.66ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:09:44,484 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 141 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2677.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.16ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2968.33ms IncrementalHoareTripleChecker+Time [2021-11-02 12:09:44,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 0 Invalid, 218 Unknown, 0 Unchecked, 4.16ms Time], IncrementalHoareTripleChecker [2 Valid, 215 Invalid, 1 Unknown, 0 Unchecked, 2968.33ms Time] [2021-11-02 12:09:44,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-02 12:09:44,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-11-02 12:09:44,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 120 states have (on average 1.275) internal successors, (153), 128 states have internal predecessors, (153), 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 12:09:44,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 153 transitions. [2021-11-02 12:09:44,493 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 153 transitions. Word has length 29 [2021-11-02 12:09:44,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:09:44,493 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 153 transitions. [2021-11-02 12:09:44,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 12:09:44,493 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 153 transitions. [2021-11-02 12:09:44,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-02 12:09:44,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:09:44,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:09:44,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 12:09:44,495 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 12:09:44,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:09:44,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1562874250, now seen corresponding path program 1 times [2021-11-02 12:09:44,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:09:44,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328770572] [2021-11-02 12:09:44,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:09:44,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:09:44,581 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 12:09:44,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1030266419] [2021-11-02 12:09:44,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:09:44,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:09:44,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:09:44,587 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 12:09:44,593 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 12:09:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:09:45,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 2408 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 12:09:45,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:09:45,828 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 12:09:45,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 12:09:45,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:09:45,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328770572] [2021-11-02 12:09:45,829 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 12:09:45,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030266419] [2021-11-02 12:09:45,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030266419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:09:45,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:09:45,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:09:45,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590303747] [2021-11-02 12:09:45,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:09:45,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:09:45,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:09:45,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:09:45,831 INFO L87 Difference]: Start difference. First operand 129 states and 153 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:09:47,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:09:48,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:09:48,902 INFO L93 Difference]: Finished difference Result 201 states and 236 transitions. [2021-11-02 12:09:48,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:09:48,903 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-02 12:09:48,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:09:48,904 INFO L225 Difference]: With dead ends: 201 [2021-11-02 12:09:48,904 INFO L226 Difference]: Without dead ends: 129 [2021-11-02 12:09:48,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 189.01ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:09:48,905 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 490 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2682.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.60ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2955.17ms IncrementalHoareTripleChecker+Time [2021-11-02 12:09:48,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [490 Valid, 0 Invalid, 229 Unknown, 0 Unchecked, 5.60ms Time], IncrementalHoareTripleChecker [13 Valid, 215 Invalid, 1 Unknown, 0 Unchecked, 2955.17ms Time] [2021-11-02 12:09:48,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-02 12:09:48,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-11-02 12:09:48,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 120 states have (on average 1.2583333333333333) internal successors, (151), 128 states have internal predecessors, (151), 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 12:09:48,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 151 transitions. [2021-11-02 12:09:48,913 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 151 transitions. Word has length 37 [2021-11-02 12:09:48,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:09:48,913 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 151 transitions. [2021-11-02 12:09:48,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:09:48,914 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 151 transitions. [2021-11-02 12:09:48,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-02 12:09:48,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:09:48,915 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] [2021-11-02 12:09:48,947 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 12:09:49,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:09:49,144 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 12:09:49,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:09:49,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1678171348, now seen corresponding path program 1 times [2021-11-02 12:09:49,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:09:49,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030823346] [2021-11-02 12:09:49,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:09:49,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:09:49,232 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 12:09:49,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953083681] [2021-11-02 12:09:49,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:09:49,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:09:49,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:09:49,235 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 12:09:49,236 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 12:09:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:09:49,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 2593 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 12:09:49,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:09:50,122 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 12:09:50,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 12:09:50,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:09:50,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030823346] [2021-11-02 12:09:50,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 12:09:50,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953083681] [2021-11-02 12:09:50,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953083681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:09:50,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:09:50,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:09:50,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367595254] [2021-11-02 12:09:50,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:09:50,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:09:50,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:09:50,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:09:50,125 INFO L87 Difference]: Start difference. First operand 129 states and 151 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:09:52,287 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:09:53,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:09:53,785 INFO L93 Difference]: Finished difference Result 247 states and 292 transitions. [2021-11-02 12:09:53,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:09:53,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-02 12:09:53,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:09:53,787 INFO L225 Difference]: With dead ends: 247 [2021-11-02 12:09:53,787 INFO L226 Difference]: Without dead ends: 149 [2021-11-02 12:09:53,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.23ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:09:53,788 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3306.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.16ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3608.33ms IncrementalHoareTripleChecker+Time [2021-11-02 12:09:53,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 475 Unknown, 0 Unchecked, 4.16ms Time], IncrementalHoareTripleChecker [13 Valid, 461 Invalid, 1 Unknown, 0 Unchecked, 3608.33ms Time] [2021-11-02 12:09:53,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-02 12:09:53,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 137. [2021-11-02 12:09:53,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 128 states have (on average 1.2421875) internal successors, (159), 136 states have internal predecessors, (159), 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 12:09:53,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2021-11-02 12:09:53,796 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 53 [2021-11-02 12:09:53,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:09:53,797 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2021-11-02 12:09:53,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:09:53,797 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2021-11-02 12:09:53,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-02 12:09:53,799 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:09:53,799 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] [2021-11-02 12:09:53,828 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 12:09:54,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:09:54,020 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 12:09:54,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:09:54,020 INFO L85 PathProgramCache]: Analyzing trace with hash -96836014, now seen corresponding path program 1 times [2021-11-02 12:09:54,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:09:54,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782034650] [2021-11-02 12:09:54,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:09:54,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:09:54,087 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 12:09:54,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [396853340] [2021-11-02 12:09:54,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:09:54,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:09:54,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:09:54,089 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 12:09:54,091 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 12:18:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:18:04,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 2598 conjuncts, 239 conjunts are in the unsatisfiable core [2021-11-02 12:18:04,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:18:04,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 12:18:05,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 9 treesize of output 3 [2021-11-02 12:18:05,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 9 treesize of output 3 [2021-11-02 12:18:05,711 INFO L354 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2021-11-02 12:18:05,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 33 [2021-11-02 12:18:06,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:18:06,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 28 [2021-11-02 12:18:07,650 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-11-02 12:18:07,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 125 treesize of output 132 [2021-11-02 12:18:10,027 INFO L354 Elim1Store]: treesize reduction 126, result has 27.2 percent of original size [2021-11-02 12:18:10,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 72 treesize of output 106 [2021-11-02 12:18:29,152 INFO L354 Elim1Store]: treesize reduction 312, result has 14.0 percent of original size [2021-11-02 12:18:29,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 111 treesize of output 143 [2021-11-02 12:18:32,965 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 12:18:32,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:18:32,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 12:18:32,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:18:32,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:18:33,012 INFO L354 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2021-11-02 12:18:33,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 102 [2021-11-02 12:18:35,147 INFO L354 Elim1Store]: treesize reduction 132, result has 15.9 percent of original size [2021-11-02 12:18:35,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 84 treesize of output 97 [2021-11-02 12:18:36,463 INFO L354 Elim1Store]: treesize reduction 84, result has 30.6 percent of original size [2021-11-02 12:18:36,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 75 treesize of output 99 [2021-11-02 12:18:36,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:18:36,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:18:36,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:18:36,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:18:36,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:18:36,845 INFO L354 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2021-11-02 12:18:36,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 79 treesize of output 61 [2021-11-02 12:18:38,842 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 12:18:38,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 12:18:38,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:18:38,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782034650] [2021-11-02 12:18:38,843 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 12:18:38,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396853340] [2021-11-02 12:18:38,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396853340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:18:38,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:18:38,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-11-02 12:18:38,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549453977] [2021-11-02 12:18:38,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-02 12:18:38,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:18:38,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-02 12:18:38,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2021-11-02 12:18:38,846 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand has 31 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 31 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:18:40,885 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 12:18:44,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:18:44,286 INFO L93 Difference]: Finished difference Result 204 states and 241 transitions. [2021-11-02 12:18:44,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-02 12:18:44,287 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 31 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-02 12:18:44,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:18:44,288 INFO L225 Difference]: With dead ends: 204 [2021-11-02 12:18:44,288 INFO L226 Difference]: Without dead ends: 202 [2021-11-02 12:18:44,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 5445.32ms TimeCoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 12:18:44,290 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 52 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3846.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.90ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 787 IncrementalHoareTripleChecker+Unchecked, 4256.41ms IncrementalHoareTripleChecker+Time [2021-11-02 12:18:44,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 0 Invalid, 1467 Unknown, 0 Unchecked, 8.90ms Time], IncrementalHoareTripleChecker [4 Valid, 675 Invalid, 1 Unknown, 787 Unchecked, 4256.41ms Time] [2021-11-02 12:18:44,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-11-02 12:18:44,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 179. [2021-11-02 12:18:44,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 170 states have (on average 1.2411764705882353) internal successors, (211), 178 states have internal predecessors, (211), 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 12:18:44,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 211 transitions. [2021-11-02 12:18:44,304 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 211 transitions. Word has length 53 [2021-11-02 12:18:44,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:18:44,305 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 211 transitions. [2021-11-02 12:18:44,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 31 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:18:44,305 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 211 transitions. [2021-11-02 12:18:44,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-02 12:18:44,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:18:44,307 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] [2021-11-02 12:18:44,509 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forcibly destroying the process [2021-11-02 12:18:44,522 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 12:18:44,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:18:44,522 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 12:18:44,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:18:44,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1466688522, now seen corresponding path program 1 times [2021-11-02 12:18:44,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:18:44,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131828450] [2021-11-02 12:18:44,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:18:44,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:18:44,610 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 12:18:44,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265631849] [2021-11-02 12:18:44,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:18:44,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:18:44,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:18:44,615 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 12:18:44,617 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 12:23:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:23:13,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 2607 conjuncts, 68 conjunts are in the unsatisfiable core [2021-11-02 12:23:13,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:23:14,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 12:23:14,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 22 [2021-11-02 12:23:14,385 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 12:23:14,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 12:23:14,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:23:14,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131828450] [2021-11-02 12:23:14,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 12:23:14,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265631849] [2021-11-02 12:23:14,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265631849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:23:14,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:23:14,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:23:14,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805363972] [2021-11-02 12:23:14,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:23:14,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:23:14,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:23:14,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:23:14,388 INFO L87 Difference]: Start difference. First operand 179 states and 211 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:23:16,427 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 12:23:19,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:23:19,378 INFO L93 Difference]: Finished difference Result 294 states and 344 transitions. [2021-11-02 12:23:19,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 12:23:19,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-02 12:23:19,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:23:19,382 INFO L225 Difference]: With dead ends: 294 [2021-11-02 12:23:19,382 INFO L226 Difference]: Without dead ends: 134 [2021-11-02 12:23:19,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 744.65ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:23:19,383 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4055.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.03ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4450.52ms IncrementalHoareTripleChecker+Time [2021-11-02 12:23:19,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 844 Unknown, 0 Unchecked, 7.03ms Time], IncrementalHoareTripleChecker [5 Valid, 838 Invalid, 1 Unknown, 0 Unchecked, 4450.52ms Time] [2021-11-02 12:23:19,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-02 12:23:19,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2021-11-02 12:23:19,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 124 states have (on average 1.2419354838709677) internal successors, (154), 132 states have internal predecessors, (154), 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 12:23:19,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 154 transitions. [2021-11-02 12:23:19,390 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 154 transitions. Word has length 55 [2021-11-02 12:23:19,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:23:19,390 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 154 transitions. [2021-11-02 12:23:19,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:23:19,390 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 154 transitions. [2021-11-02 12:23:19,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-02 12:23:19,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:23:19,391 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 12:23:19,607 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forcibly destroying the process [2021-11-02 12:23:19,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 12:23:19,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:23:19,615 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 12:23:19,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:23:19,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1055243480, now seen corresponding path program 1 times [2021-11-02 12:23:19,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:23:19,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918224318] [2021-11-02 12:23:19,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:23:19,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:23:19,711 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 12:23:19,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1673454338] [2021-11-02 12:23:19,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:23:19,712 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:23:19,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:23:19,716 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 12:23:19,717 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 12:23:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:23:20,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 2612 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-02 12:23:20,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:23:20,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 12:23:20,688 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-02 12:23:20,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 21 [2021-11-02 12:23:20,778 INFO L388 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 27 treesize of output 23 [2021-11-02 12:23:20,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:23:20,997 INFO L388 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 43 treesize of output 30 [2021-11-02 12:23:21,195 INFO L354 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-11-02 12:23:21,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 24 [2021-11-02 12:23:21,361 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-02 12:23:21,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 26 [2021-11-02 12:23:21,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:23:21,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 12:23:21,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:23:21,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918224318] [2021-11-02 12:23:21,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 12:23:21,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673454338] [2021-11-02 12:23:21,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673454338] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:23:21,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:23:21,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 12:23:21,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511572491] [2021-11-02 12:23:21,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 12:23:21,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:23:21,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 12:23:21,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-02 12:23:21,733 INFO L87 Difference]: Start difference. First operand 133 states and 154 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 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 12:23:24,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:23:28,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:23:28,391 INFO L93 Difference]: Finished difference Result 259 states and 301 transitions. [2021-11-02 12:23:28,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 12:23:28,392 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 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 12:23:28,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:23:28,392 INFO L225 Difference]: With dead ends: 259 [2021-11-02 12:23:28,393 INFO L226 Difference]: Without dead ends: 155 [2021-11-02 12:23:28,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1259.98ms TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2021-11-02 12:23:28,394 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 127 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5326.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.42ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5784.45ms IncrementalHoareTripleChecker+Time [2021-11-02 12:23:28,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 0 Invalid, 1308 Unknown, 0 Unchecked, 12.42ms Time], IncrementalHoareTripleChecker [25 Valid, 1282 Invalid, 1 Unknown, 0 Unchecked, 5784.45ms Time] [2021-11-02 12:23:28,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-02 12:23:28,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 131. [2021-11-02 12:23:28,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 122 states have (on average 1.2377049180327868) internal successors, (151), 130 states have internal predecessors, (151), 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 12:23:28,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 151 transitions. [2021-11-02 12:23:28,398 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 151 transitions. Word has length 56 [2021-11-02 12:23:28,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:23:28,399 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 151 transitions. [2021-11-02 12:23:28,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 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 12:23:28,399 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 151 transitions. [2021-11-02 12:23:28,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-02 12:23:28,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:23:28,400 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] [2021-11-02 12:23:28,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 12:23:28,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:23:28,600 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 12:23:28,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:23:28,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1946382482, now seen corresponding path program 1 times [2021-11-02 12:23:28,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:23:28,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281165483] [2021-11-02 12:23:28,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:23:28,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:23:28,678 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 12:23:28,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1774618661] [2021-11-02 12:23:28,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:23:28,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:23:28,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:23:28,680 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 12:23:28,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 12:23:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:23:29,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 2617 conjuncts, 86 conjunts are in the unsatisfiable core [2021-11-02 12:23:29,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:23:29,672 INFO L388 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 18 treesize of output 14 [2021-11-02 12:23:29,686 INFO L388 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 13 treesize of output 9 [2021-11-02 12:23:29,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:23:29,817 INFO L388 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 [2021-11-02 12:23:29,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:23:29,837 INFO L388 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 21 treesize of output 20 [2021-11-02 12:23:30,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:23:30,123 INFO L388 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 50 treesize of output 38 [2021-11-02 12:23:30,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:23:30,133 INFO L388 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 35 treesize of output 23 [2021-11-02 12:23:30,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 9 treesize of output 3 [2021-11-02 12:23:30,780 INFO L388 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 24 treesize of output 12 [2021-11-02 12:23:30,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 12:23:30,848 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 12:23:30,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-02 12:23:31,039 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 12:23:31,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 12:23:31,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:23:31,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281165483] [2021-11-02 12:23:31,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 12:23:31,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774618661] [2021-11-02 12:23:31,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774618661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:23:31,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:23:31,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-02 12:23:31,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409127372] [2021-11-02 12:23:31,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 12:23:31,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:23:31,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 12:23:31,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-11-02 12:23:31,041 INFO L87 Difference]: Start difference. First operand 131 states and 151 transitions. Second operand has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 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 12:23:33,334 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:23:39,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:23:39,217 INFO L93 Difference]: Finished difference Result 302 states and 346 transitions. [2021-11-02 12:23:39,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 12:23:39,218 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 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 58 [2021-11-02 12:23:39,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:23:39,219 INFO L225 Difference]: With dead ends: 302 [2021-11-02 12:23:39,219 INFO L226 Difference]: Without dead ends: 225 [2021-11-02 12:23:39,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 2132.17ms TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2021-11-02 12:23:39,220 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 760 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 1651 mSolverCounterSat, 83 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6096.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.66ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1651 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6600.18ms IncrementalHoareTripleChecker+Time [2021-11-02 12:23:39,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 0 Invalid, 1735 Unknown, 0 Unchecked, 17.66ms Time], IncrementalHoareTripleChecker [83 Valid, 1651 Invalid, 1 Unknown, 0 Unchecked, 6600.18ms Time] [2021-11-02 12:23:39,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-11-02 12:23:39,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 175. [2021-11-02 12:23:39,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 166 states have (on average 1.2289156626506024) internal successors, (204), 174 states have internal predecessors, (204), 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 12:23:39,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 204 transitions. [2021-11-02 12:23:39,228 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 204 transitions. Word has length 58 [2021-11-02 12:23:39,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:23:39,229 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 204 transitions. [2021-11-02 12:23:39,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 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 12:23:39,229 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 204 transitions. [2021-11-02 12:23:39,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-02 12:23:39,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:23:39,230 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, 1] [2021-11-02 12:23:39,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 12:23:39,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:23:39,447 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 12:23:39,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:23:39,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1942991624, now seen corresponding path program 1 times [2021-11-02 12:23:39,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:23:39,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50808500] [2021-11-02 12:23:39,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:23:39,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:23:39,524 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 12:23:39,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [899647229] [2021-11-02 12:23:39,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:23:39,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:23:39,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:23:39,526 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 12:23:39,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 12:23:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:23:40,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 2636 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-02 12:23:40,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:23:40,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2021-11-02 12:23:40,798 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 12:23:40,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 12:23:40,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:23:40,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50808500] [2021-11-02 12:23:40,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 12:23:40,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899647229] [2021-11-02 12:23:40,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899647229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:23:40,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:23:40,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:23:40,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401406982] [2021-11-02 12:23:40,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:23:40,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:23:40,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:23:40,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:23:40,801 INFO L87 Difference]: Start difference. First operand 175 states and 204 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 12:23:43,139 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:23:45,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:23:45,752 INFO L93 Difference]: Finished difference Result 519 states and 594 transitions. [2021-11-02 12:23:45,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 12:23:45,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 61 [2021-11-02 12:23:45,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:23:45,754 INFO L225 Difference]: With dead ends: 519 [2021-11-02 12:23:45,754 INFO L226 Difference]: Without dead ends: 422 [2021-11-02 12:23:45,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 403.79ms TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-11-02 12:23:45,755 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 581 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4187.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.56ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4609.25ms IncrementalHoareTripleChecker+Time [2021-11-02 12:23:45,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 0 Invalid, 747 Unknown, 0 Unchecked, 7.56ms Time], IncrementalHoareTripleChecker [19 Valid, 727 Invalid, 1 Unknown, 0 Unchecked, 4609.25ms Time] [2021-11-02 12:23:45,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-11-02 12:23:45,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 186. [2021-11-02 12:23:45,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 177 states have (on average 1.2203389830508475) internal successors, (216), 185 states have internal predecessors, (216), 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 12:23:45,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 216 transitions. [2021-11-02 12:23:45,765 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 216 transitions. Word has length 61 [2021-11-02 12:23:45,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:23:45,766 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 216 transitions. [2021-11-02 12:23:45,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 12:23:45,766 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 216 transitions. [2021-11-02 12:23:45,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-02 12:23:45,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:23:45,767 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, 1] [2021-11-02 12:23:45,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-02 12:23:45,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:23:45,984 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-02 12:23:45,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:23:45,984 INFO L85 PathProgramCache]: Analyzing trace with hash -2103829178, now seen corresponding path program 1 times [2021-11-02 12:23:45,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:23:45,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266177274] [2021-11-02 12:23:45,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:23:45,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:23:46,047 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 12:23:46,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [4481893] [2021-11-02 12:23:46,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:23:46,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:23:46,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:23:46,049 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 12:23:46,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 12:23:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:23:46,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 2631 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 12:23:46,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:23:47,017 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 12:23:47,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 12:23:47,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:23:47,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266177274] [2021-11-02 12:23:47,018 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 12:23:47,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4481893] [2021-11-02 12:23:47,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4481893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:23:47,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:23:47,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:23:47,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656919414] [2021-11-02 12:23:47,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:23:47,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:23:47,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:23:47,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:23:47,019 INFO L87 Difference]: Start difference. First operand 186 states and 216 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) Killed by 15