./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_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_byte_buf_clean_up_secure_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 e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 12:35:51,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 12:35:51,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 12:35:51,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 12:35:51,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 12:35:51,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 12:35:51,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 12:35:51,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 12:35:51,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 12:35:51,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 12:35:51,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 12:35:51,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 12:35:51,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 12:35:51,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 12:35:51,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 12:35:51,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 12:35:51,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 12:35:51,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 12:35:51,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 12:35:51,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 12:35:51,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 12:35:51,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 12:35:51,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 12:35:51,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 12:35:51,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 12:35:51,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 12:35:51,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 12:35:51,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 12:35:51,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 12:35:51,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 12:35:51,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 12:35:51,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 12:35:51,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 12:35:51,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 12:35:51,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 12:35:51,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 12:35:51,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 12:35:51,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 12:35:51,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 12:35:51,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 12:35:51,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 12:35:51,836 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 12:35:51,857 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 12:35:51,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 12:35:51,858 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 12:35:51,858 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 12:35:51,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 12:35:51,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 12:35:51,859 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 12:35:51,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 12:35:51,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 12:35:51,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 12:35:51,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 12:35:51,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 12:35:51,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 12:35:51,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 12:35:51,861 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 12:35:51,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 12:35:51,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 12:35:51,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 12:35:51,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 12:35:51,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 12:35:51,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 12:35:51,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 12:35:51,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 12:35:51,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 12:35:51,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 12:35:51,863 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 12:35:51,863 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 12:35:51,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 12:35:51,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 12:35:51,863 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 [2021-11-02 12:35:52,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 12:35:52,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 12:35:52,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 12:35:52,166 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 12:35:52,167 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 12:35:52,168 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2021-11-02 12:35:52,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c5302caa/0244f01e39474fe8a9da9b38bd7a4cb9/FLAG78c91fd58 [2021-11-02 12:35:52,871 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 12:35:52,871 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2021-11-02 12:35:52,905 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c5302caa/0244f01e39474fe8a9da9b38bd7a4cb9/FLAG78c91fd58 [2021-11-02 12:35:53,058 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c5302caa/0244f01e39474fe8a9da9b38bd7a4cb9 [2021-11-02 12:35:53,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 12:35:53,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 12:35:53,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 12:35:53,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 12:35:53,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 12:35:53,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:35:53" (1/1) ... [2021-11-02 12:35:53,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72574520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:53, skipping insertion in model container [2021-11-02 12:35:53,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:35:53" (1/1) ... [2021-11-02 12:35:53,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 12:35:53,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 12:35:53,318 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_byte_buf_clean_up_secure_harness.i[4502,4515] [2021-11-02 12:35:53,322 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_byte_buf_clean_up_secure_harness.i[4562,4575] [2021-11-02 12:35:53,333 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 12:35:53,337 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 12:35:53,826 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:35:53,830 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:35:53,831 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:35:53,831 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:35:53,832 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:35:53,840 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:35:53,848 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:35:53,849 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:35:53,849 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:35:54,052 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 12:35:54,053 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 12:35:54,055 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 12:35:54,055 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 12:35:54,056 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 12:35:54,057 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 12:35:54,057 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 12:35:54,058 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 12:35:54,058 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 12:35:54,059 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 12:35:54,139 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 12:35:54,187 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:35:54,187 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:35:54,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 12:35:54,289 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 12:35:54,310 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_byte_buf_clean_up_secure_harness.i[4502,4515] [2021-11-02 12:35:54,311 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_byte_buf_clean_up_secure_harness.i[4562,4575] [2021-11-02 12:35:54,313 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 12:35:54,313 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 12:35:54,350 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:35:54,351 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:35:54,352 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:35:54,353 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:35:54,353 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:35:54,358 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:35:54,359 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:35:54,360 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:35:54,360 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:35:54,385 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 12:35:54,386 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 12:35:54,386 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 12:35:54,386 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 12:35:54,387 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 12:35:54,387 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 12:35:54,388 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 12:35:54,388 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 12:35:54,389 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 12:35:54,389 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 12:35:54,414 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 12:35:54,438 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:35:54,438 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:35:54,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 12:35:54,614 INFO L208 MainTranslator]: Completed translation [2021-11-02 12:35:54,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:54 WrapperNode [2021-11-02 12:35:54,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 12:35:54,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 12:35:54,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 12:35:54,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 12:35:54,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:54" (1/1) ... [2021-11-02 12:35:54,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:54" (1/1) ... [2021-11-02 12:35:54,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 12:35:54,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 12:35:54,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 12:35:54,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 12:35:54,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:54" (1/1) ... [2021-11-02 12:35:54,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:54" (1/1) ... [2021-11-02 12:35:54,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:54" (1/1) ... [2021-11-02 12:35:54,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:54" (1/1) ... [2021-11-02 12:35:54,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:54" (1/1) ... [2021-11-02 12:35:54,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:54" (1/1) ... [2021-11-02 12:35:54,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:54" (1/1) ... [2021-11-02 12:35:54,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 12:35:54,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 12:35:54,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 12:35:54,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 12:35:54,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:54" (1/1) ... [2021-11-02 12:35:54,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 12:35:54,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:35:54,881 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 12:35:54,901 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 12:35:54,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 12:35:54,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 12:35:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 12:35:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 12:35:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 12:35:54,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 12:35:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 12:35:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 12:35:54,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 12:35:54,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 12:35:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 12:35:59,544 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 12:35:59,544 INFO L299 CfgBuilder]: Removed 73 assume(true) statements. [2021-11-02 12:35:59,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:35:59 BoogieIcfgContainer [2021-11-02 12:35:59,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 12:35:59,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 12:35:59,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 12:35:59,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 12:35:59,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:35:53" (1/3) ... [2021-11-02 12:35:59,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d47f836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:35:59, skipping insertion in model container [2021-11-02 12:35:59,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:35:54" (2/3) ... [2021-11-02 12:35:59,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d47f836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:35:59, skipping insertion in model container [2021-11-02 12:35:59,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:35:59" (3/3) ... [2021-11-02 12:35:59,552 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_secure_harness.i [2021-11-02 12:35:59,556 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 12:35:59,556 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-02 12:35:59,586 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 12:35:59,593 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 12:35:59,594 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-02 12:35:59,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 154 states have (on average 1.4610389610389611) internal successors, (225), 160 states have internal predecessors, (225), 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 12:35:59,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-02 12:35:59,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:35:59,623 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] [2021-11-02 12:35:59,623 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:35:59,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:35:59,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1283718026, now seen corresponding path program 1 times [2021-11-02 12:35:59,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:35:59,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061566990] [2021-11-02 12:35:59,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:35:59,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:35:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:36:00,206 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 12:36:00,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:36:00,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061566990] [2021-11-02 12:36:00,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061566990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:36:00,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:36:00,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 12:36:00,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58823955] [2021-11-02 12:36:00,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 12:36:00,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:36:00,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 12:36:00,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 12:36:00,241 INFO L87 Difference]: Start difference. First operand has 161 states, 154 states have (on average 1.4610389610389611) internal successors, (225), 160 states have internal predecessors, (225), 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 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:36:02,342 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:36:03,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:36:03,348 INFO L93 Difference]: Finished difference Result 318 states and 445 transitions. [2021-11-02 12:36:03,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 12:36:03,350 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-02 12:36:03,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:36:03,356 INFO L225 Difference]: With dead ends: 318 [2021-11-02 12:36:03,357 INFO L226 Difference]: Without dead ends: 156 [2021-11-02 12:36:03,360 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 12:36:03,364 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2768.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.98ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3041.70ms IncrementalHoareTripleChecker+Time [2021-11-02 12:36:03,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 209 Unknown, 0 Unchecked, 3.98ms Time], IncrementalHoareTripleChecker [0 Valid, 208 Invalid, 1 Unknown, 0 Unchecked, 3041.70ms Time] [2021-11-02 12:36:03,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-02 12:36:03,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-11-02 12:36:03,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 150 states have (on average 1.36) internal successors, (204), 155 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 12:36:03,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 204 transitions. [2021-11-02 12:36:03,396 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 204 transitions. Word has length 34 [2021-11-02 12:36:03,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:36:03,396 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 204 transitions. [2021-11-02 12:36:03,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:36:03,397 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 204 transitions. [2021-11-02 12:36:03,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-02 12:36:03,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:36:03,398 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] [2021-11-02 12:36:03,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 12:36:03,398 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:36:03,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:36:03,399 INFO L85 PathProgramCache]: Analyzing trace with hash 27354892, now seen corresponding path program 1 times [2021-11-02 12:36:03,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:36:03,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400151319] [2021-11-02 12:36:03,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:36:03,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:36:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:36:03,710 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 12:36:03,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:36:03,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400151319] [2021-11-02 12:36:03,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400151319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:36:03,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:36:03,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:36:03,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291028054] [2021-11-02 12:36:03,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:36:03,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:36:03,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:36:03,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:36:03,713 INFO L87 Difference]: Start difference. First operand 156 states and 204 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:36:05,777 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 12:36:06,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:36:06,943 INFO L93 Difference]: Finished difference Result 286 states and 374 transitions. [2021-11-02 12:36:06,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 12:36:06,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-02 12:36:06,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:36:06,946 INFO L225 Difference]: With dead ends: 286 [2021-11-02 12:36:06,946 INFO L226 Difference]: Without dead ends: 156 [2021-11-02 12:36:06,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.81ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:36:06,947 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 295 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3014.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.08ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3174.36ms IncrementalHoareTripleChecker+Time [2021-11-02 12:36:06,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 0 Invalid, 299 Unknown, 0 Unchecked, 12.08ms Time], IncrementalHoareTripleChecker [6 Valid, 292 Invalid, 1 Unknown, 0 Unchecked, 3174.36ms Time] [2021-11-02 12:36:06,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-02 12:36:06,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-11-02 12:36:06,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 150 states have (on average 1.3466666666666667) internal successors, (202), 155 states have internal predecessors, (202), 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 12:36:06,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 202 transitions. [2021-11-02 12:36:06,956 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 202 transitions. Word has length 34 [2021-11-02 12:36:06,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:36:06,956 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 202 transitions. [2021-11-02 12:36:06,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:36:06,956 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 202 transitions. [2021-11-02 12:36:06,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-02 12:36:06,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:36:06,957 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] [2021-11-02 12:36:06,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 12:36:06,958 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:36:06,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:36:06,958 INFO L85 PathProgramCache]: Analyzing trace with hash -2136977490, now seen corresponding path program 1 times [2021-11-02 12:36:06,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:36:06,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977874007] [2021-11-02 12:36:06,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:36:06,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:36:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:36:07,209 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 12:36:07,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:36:07,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977874007] [2021-11-02 12:36:07,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977874007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:36:07,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:36:07,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:36:07,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386209568] [2021-11-02 12:36:07,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:36:07,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:36:07,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:36:07,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:36:07,211 INFO L87 Difference]: Start difference. First operand 156 states and 202 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:36:09,267 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 12:36:11,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:36:11,361 INFO L93 Difference]: Finished difference Result 347 states and 456 transitions. [2021-11-02 12:36:11,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:36:11,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-02 12:36:11,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:36:11,363 INFO L225 Difference]: With dead ends: 347 [2021-11-02 12:36:11,363 INFO L226 Difference]: Without dead ends: 216 [2021-11-02 12:36:11,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.70ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:36:11,364 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 138 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3691.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.98ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4077.12ms IncrementalHoareTripleChecker+Time [2021-11-02 12:36:11,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 0 Invalid, 643 Unknown, 0 Unchecked, 9.98ms Time], IncrementalHoareTripleChecker [21 Valid, 621 Invalid, 1 Unknown, 0 Unchecked, 4077.12ms Time] [2021-11-02 12:36:11,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-02 12:36:11,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 168. [2021-11-02 12:36:11,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 162 states have (on average 1.3209876543209877) internal successors, (214), 167 states have internal predecessors, (214), 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 12:36:11,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 214 transitions. [2021-11-02 12:36:11,371 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 214 transitions. Word has length 46 [2021-11-02 12:36:11,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:36:11,371 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 214 transitions. [2021-11-02 12:36:11,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:36:11,371 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 214 transitions. [2021-11-02 12:36:11,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-02 12:36:11,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:36:11,372 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] [2021-11-02 12:36:11,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 12:36:11,372 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:36:11,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:36:11,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1456389932, now seen corresponding path program 1 times [2021-11-02 12:36:11,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:36:11,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860451939] [2021-11-02 12:36:11,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:36:11,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:36:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:36:11,754 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 12:36:11,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:36:11,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860451939] [2021-11-02 12:36:11,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860451939] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:36:11,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:36:11,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:36:11,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939212204] [2021-11-02 12:36:11,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:36:11,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:36:11,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:36:11,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:36:11,756 INFO L87 Difference]: Start difference. First operand 168 states and 214 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:36:13,798 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 12:36:15,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:36:15,237 INFO L93 Difference]: Finished difference Result 270 states and 342 transitions. [2021-11-02 12:36:15,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:36:15,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-02 12:36:15,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:36:15,238 INFO L225 Difference]: With dead ends: 270 [2021-11-02 12:36:15,238 INFO L226 Difference]: Without dead ends: 168 [2021-11-02 12:36:15,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 270.65ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:36:15,239 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 643 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3022.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.31ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3311.27ms IncrementalHoareTripleChecker+Time [2021-11-02 12:36:15,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [643 Valid, 0 Invalid, 328 Unknown, 0 Unchecked, 8.31ms Time], IncrementalHoareTripleChecker [9 Valid, 318 Invalid, 1 Unknown, 0 Unchecked, 3311.27ms Time] [2021-11-02 12:36:15,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-11-02 12:36:15,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-11-02 12:36:15,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 162 states have (on average 1.3024691358024691) internal successors, (211), 167 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 12:36:15,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 211 transitions. [2021-11-02 12:36:15,245 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 211 transitions. Word has length 46 [2021-11-02 12:36:15,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:36:15,245 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 211 transitions. [2021-11-02 12:36:15,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:36:15,245 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 211 transitions. [2021-11-02 12:36:15,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-02 12:36:15,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:36:15,246 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] [2021-11-02 12:36:15,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 12:36:15,246 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:36:15,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:36:15,252 INFO L85 PathProgramCache]: Analyzing trace with hash 921784791, now seen corresponding path program 1 times [2021-11-02 12:36:15,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:36:15,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686336532] [2021-11-02 12:36:15,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:36:15,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:36:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:36:15,666 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 12:36:15,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:36:15,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686336532] [2021-11-02 12:36:15,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686336532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:36:15,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:36:15,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:36:15,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943104710] [2021-11-02 12:36:15,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:36:15,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:36:15,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:36:15,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:36:15,668 INFO L87 Difference]: Start difference. First operand 168 states and 211 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 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 12:36:17,727 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 12:36:19,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:36:19,365 INFO L93 Difference]: Finished difference Result 241 states and 298 transitions. [2021-11-02 12:36:19,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 12:36:19,366 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 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 52 [2021-11-02 12:36:19,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:36:19,367 INFO L225 Difference]: With dead ends: 241 [2021-11-02 12:36:19,367 INFO L226 Difference]: Without dead ends: 168 [2021-11-02 12:36:19,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 370.97ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-02 12:36:19,368 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 767 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3153.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.44ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3444.79ms IncrementalHoareTripleChecker+Time [2021-11-02 12:36:19,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [767 Valid, 0 Invalid, 381 Unknown, 0 Unchecked, 8.44ms Time], IncrementalHoareTripleChecker [7 Valid, 373 Invalid, 1 Unknown, 0 Unchecked, 3444.79ms Time] [2021-11-02 12:36:19,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-11-02 12:36:19,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-11-02 12:36:19,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 162 states have (on average 1.2962962962962963) internal successors, (210), 167 states have internal predecessors, (210), 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 12:36:19,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 210 transitions. [2021-11-02 12:36:19,381 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 210 transitions. Word has length 52 [2021-11-02 12:36:19,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:36:19,382 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 210 transitions. [2021-11-02 12:36:19,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 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 12:36:19,382 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 210 transitions. [2021-11-02 12:36:19,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-02 12:36:19,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:36:19,383 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 12:36:19,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 12:36:19,384 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:36:19,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:36:19,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1091747988, now seen corresponding path program 1 times [2021-11-02 12:36:19,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:36:19,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251714724] [2021-11-02 12:36:19,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:36:19,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:36:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:36:19,890 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 12:36:19,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:36:19,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251714724] [2021-11-02 12:36:19,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251714724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:36:19,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:36:19,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:36:19,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064972349] [2021-11-02 12:36:19,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:36:19,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:36:19,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:36:19,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:36:19,892 INFO L87 Difference]: Start difference. First operand 168 states and 210 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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 12:36:21,944 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 12:36:25,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:36:25,295 INFO L93 Difference]: Finished difference Result 303 states and 368 transitions. [2021-11-02 12:36:25,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 12:36:25,296 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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 12:36:25,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:36:25,297 INFO L225 Difference]: With dead ends: 303 [2021-11-02 12:36:25,297 INFO L226 Difference]: Without dead ends: 299 [2021-11-02 12:36:25,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 255.06ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:36:25,298 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 283 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4778.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.68ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5196.62ms IncrementalHoareTripleChecker+Time [2021-11-02 12:36:25,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 0 Invalid, 917 Unknown, 0 Unchecked, 11.68ms Time], IncrementalHoareTripleChecker [45 Valid, 871 Invalid, 1 Unknown, 0 Unchecked, 5196.62ms Time] [2021-11-02 12:36:25,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-11-02 12:36:25,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 176. [2021-11-02 12:36:25,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 170 states have (on average 1.2823529411764707) internal successors, (218), 175 states have internal predecessors, (218), 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 12:36:25,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 218 transitions. [2021-11-02 12:36:25,343 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 218 transitions. Word has length 58 [2021-11-02 12:36:25,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:36:25,343 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 218 transitions. [2021-11-02 12:36:25,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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 12:36:25,344 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 218 transitions. [2021-11-02 12:36:25,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 12:36:25,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:36:25,345 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, 1] [2021-11-02 12:36:25,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 12:36:25,345 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:36:25,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:36:25,349 INFO L85 PathProgramCache]: Analyzing trace with hash 948784038, now seen corresponding path program 1 times [2021-11-02 12:36:25,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:36:25,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061152672] [2021-11-02 12:36:25,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:36:25,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:36:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:36:27,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:36:27,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:36:27,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061152672] [2021-11-02 12:36:27,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061152672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:36:27,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:36:27,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 12:36:27,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483086650] [2021-11-02 12:36:27,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 12:36:27,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:36:27,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 12:36:27,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:36:27,473 INFO L87 Difference]: Start difference. First operand 176 states and 218 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:36:29,520 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 12:36:33,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:36:33,451 INFO L93 Difference]: Finished difference Result 363 states and 453 transitions. [2021-11-02 12:36:33,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 12:36:33,452 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-02 12:36:33,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:36:33,453 INFO L225 Difference]: With dead ends: 363 [2021-11-02 12:36:33,453 INFO L226 Difference]: Without dead ends: 214 [2021-11-02 12:36:33,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 880.55ms TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-11-02 12:36:33,454 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 653 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4879.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.62ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5273.79ms IncrementalHoareTripleChecker+Time [2021-11-02 12:36:33,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [653 Valid, 0 Invalid, 930 Unknown, 0 Unchecked, 15.62ms Time], IncrementalHoareTripleChecker [25 Valid, 904 Invalid, 1 Unknown, 0 Unchecked, 5273.79ms Time] [2021-11-02 12:36:33,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-02 12:36:33,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 172. [2021-11-02 12:36:33,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 166 states have (on average 1.2771084337349397) internal successors, (212), 171 states have internal predecessors, (212), 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 12:36:33,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 212 transitions. [2021-11-02 12:36:33,469 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 212 transitions. Word has length 62 [2021-11-02 12:36:33,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:36:33,470 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 212 transitions. [2021-11-02 12:36:33,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:36:33,470 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 212 transitions. [2021-11-02 12:36:33,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-02 12:36:33,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:36:33,471 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:36:33,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 12:36:33,471 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:36:33,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:36:33,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1716080936, now seen corresponding path program 1 times [2021-11-02 12:36:33,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:36:33,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460578161] [2021-11-02 12:36:33,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:36:33,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:36:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:36:33,703 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 12:36:33,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:36:33,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460578161] [2021-11-02 12:36:33,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460578161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:36:33,703 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:36:33,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:36:33,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448344754] [2021-11-02 12:36:33,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:36:33,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:36:33,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:36:33,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:36:33,704 INFO L87 Difference]: Start difference. First operand 172 states and 212 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:36:35,750 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 12:36:38,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:36:38,409 INFO L93 Difference]: Finished difference Result 515 states and 636 transitions. [2021-11-02 12:36:38,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:36:38,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-02 12:36:38,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:36:38,411 INFO L225 Difference]: With dead ends: 515 [2021-11-02 12:36:38,411 INFO L226 Difference]: Without dead ends: 363 [2021-11-02 12:36:38,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 123.82ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:36:38,412 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 366 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4221.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.18ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4582.18ms IncrementalHoareTripleChecker+Time [2021-11-02 12:36:38,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 0 Invalid, 742 Unknown, 0 Unchecked, 7.18ms Time], IncrementalHoareTripleChecker [27 Valid, 714 Invalid, 1 Unknown, 0 Unchecked, 4582.18ms Time] [2021-11-02 12:36:38,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-11-02 12:36:38,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 210. [2021-11-02 12:36:38,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 204 states have (on average 1.2745098039215685) internal successors, (260), 209 states have internal predecessors, (260), 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 12:36:38,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 260 transitions. [2021-11-02 12:36:38,418 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 260 transitions. Word has length 70 [2021-11-02 12:36:38,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:36:38,418 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 260 transitions. [2021-11-02 12:36:38,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:36:38,418 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 260 transitions. [2021-11-02 12:36:38,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-02 12:36:38,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:36:38,419 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:36:38,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 12:36:38,436 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:36:38,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:36:38,437 INFO L85 PathProgramCache]: Analyzing trace with hash -381014808, now seen corresponding path program 1 times [2021-11-02 12:36:38,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:36:38,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311037469] [2021-11-02 12:36:38,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:36:38,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:36:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:36:39,114 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 12:36:39,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:36:39,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311037469] [2021-11-02 12:36:39,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311037469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:36:39,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:36:39,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 12:36:39,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433148376] [2021-11-02 12:36:39,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 12:36:39,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:36:39,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 12:36:39,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:36:39,115 INFO L87 Difference]: Start difference. First operand 210 states and 260 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:36:41,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:36:48,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:36:48,967 INFO L93 Difference]: Finished difference Result 557 states and 693 transitions. [2021-11-02 12:36:48,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 12:36:48,967 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-02 12:36:48,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:36:48,969 INFO L225 Difference]: With dead ends: 557 [2021-11-02 12:36:48,969 INFO L226 Difference]: Without dead ends: 369 [2021-11-02 12:36:48,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1035.77ms TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2021-11-02 12:36:48,970 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 554 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 2207 mSolverCounterSat, 49 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8596.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.21ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2207 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9045.65ms IncrementalHoareTripleChecker+Time [2021-11-02 12:36:48,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 0 Invalid, 2257 Unknown, 0 Unchecked, 23.21ms Time], IncrementalHoareTripleChecker [49 Valid, 2207 Invalid, 1 Unknown, 0 Unchecked, 9045.65ms Time] [2021-11-02 12:36:48,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-11-02 12:36:48,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 219. [2021-11-02 12:36:48,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 213 states have (on average 1.2300469483568075) internal successors, (262), 218 states have internal predecessors, (262), 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 12:36:48,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 262 transitions. [2021-11-02 12:36:48,977 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 262 transitions. Word has length 70 [2021-11-02 12:36:48,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:36:48,977 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 262 transitions. [2021-11-02 12:36:48,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:36:48,977 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 262 transitions. [2021-11-02 12:36:48,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-02 12:36:48,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:36:48,978 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:36:48,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 12:36:48,978 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:36:48,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:36:48,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1752822106, now seen corresponding path program 1 times [2021-11-02 12:36:48,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:36:48,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975643149] [2021-11-02 12:36:48,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:36:48,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:36:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:36:49,565 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 12:36:49,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:36:49,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975643149] [2021-11-02 12:36:49,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975643149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:36:49,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:36:49,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 12:36:49,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038731153] [2021-11-02 12:36:49,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 12:36:49,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:36:49,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 12:36:49,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:36:49,567 INFO L87 Difference]: Start difference. First operand 219 states and 262 transitions. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:36:51,610 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 12:37:01,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:37:01,828 INFO L93 Difference]: Finished difference Result 537 states and 652 transitions. [2021-11-02 12:37:01,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 12:37:01,828 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-02 12:37:01,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:37:01,829 INFO L225 Difference]: With dead ends: 537 [2021-11-02 12:37:01,829 INFO L226 Difference]: Without dead ends: 403 [2021-11-02 12:37:01,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1235.98ms TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2021-11-02 12:37:01,830 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 495 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 3136 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10603.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.70ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3136 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11226.91ms IncrementalHoareTripleChecker+Time [2021-11-02 12:37:01,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 0 Invalid, 3171 Unknown, 0 Unchecked, 27.70ms Time], IncrementalHoareTripleChecker [34 Valid, 3136 Invalid, 1 Unknown, 0 Unchecked, 11226.91ms Time] [2021-11-02 12:37:01,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-11-02 12:37:01,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 241. [2021-11-02 12:37:01,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 235 states have (on average 1.225531914893617) internal successors, (288), 240 states have internal predecessors, (288), 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 12:37:01,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 288 transitions. [2021-11-02 12:37:01,837 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 288 transitions. Word has length 70 [2021-11-02 12:37:01,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:37:01,837 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 288 transitions. [2021-11-02 12:37:01,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:01,837 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 288 transitions. [2021-11-02 12:37:01,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-02 12:37:01,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:37:01,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:37:01,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 12:37:01,838 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:37:01,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:37:01,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1767800218, now seen corresponding path program 1 times [2021-11-02 12:37:01,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:37:01,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80047891] [2021-11-02 12:37:01,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:37:01,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:37:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:37:02,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:37:02,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:37:02,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80047891] [2021-11-02 12:37:02,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80047891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:37:02,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:37:02,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:37:02,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144213318] [2021-11-02 12:37:02,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:37:02,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:37:02,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:37:02,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:37:02,372 INFO L87 Difference]: Start difference. First operand 241 states and 288 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:04,958 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:37:09,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:37:09,207 INFO L93 Difference]: Finished difference Result 499 states and 584 transitions. [2021-11-02 12:37:09,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 12:37:09,208 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-02 12:37:09,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:37:09,209 INFO L225 Difference]: With dead ends: 499 [2021-11-02 12:37:09,209 INFO L226 Difference]: Without dead ends: 274 [2021-11-02 12:37:09,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 254.72ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:37:09,210 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 89 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6247.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.41ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6666.22ms IncrementalHoareTripleChecker+Time [2021-11-02 12:37:09,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 0 Invalid, 1300 Unknown, 0 Unchecked, 9.41ms Time], IncrementalHoareTripleChecker [38 Valid, 1261 Invalid, 1 Unknown, 0 Unchecked, 6666.22ms Time] [2021-11-02 12:37:09,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-11-02 12:37:09,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 241. [2021-11-02 12:37:09,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 235 states have (on average 1.2) internal successors, (282), 240 states have internal predecessors, (282), 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 12:37:09,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 282 transitions. [2021-11-02 12:37:09,215 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 282 transitions. Word has length 70 [2021-11-02 12:37:09,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:37:09,215 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 282 transitions. [2021-11-02 12:37:09,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:09,216 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 282 transitions. [2021-11-02 12:37:09,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 12:37:09,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:37:09,216 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:37:09,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 12:37:09,216 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:37:09,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:37:09,217 INFO L85 PathProgramCache]: Analyzing trace with hash 591592452, now seen corresponding path program 1 times [2021-11-02 12:37:09,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:37:09,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990931179] [2021-11-02 12:37:09,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:37:09,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:37:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:37:09,383 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 12:37:09,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:37:09,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990931179] [2021-11-02 12:37:09,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990931179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:37:09,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:37:09,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:37:09,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792082296] [2021-11-02 12:37:09,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:37:09,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:37:09,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:37:09,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:37:09,384 INFO L87 Difference]: Start difference. First operand 241 states and 282 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:12,076 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:37:14,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:37:14,075 INFO L93 Difference]: Finished difference Result 440 states and 515 transitions. [2021-11-02 12:37:14,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:37:14,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-02 12:37:14,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:37:14,076 INFO L225 Difference]: With dead ends: 440 [2021-11-02 12:37:14,076 INFO L226 Difference]: Without dead ends: 202 [2021-11-02 12:37:14,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.95ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:37:14,077 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4287.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.55ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4634.66ms IncrementalHoareTripleChecker+Time [2021-11-02 12:37:14,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 593 Unknown, 0 Unchecked, 3.55ms Time], IncrementalHoareTripleChecker [17 Valid, 575 Invalid, 1 Unknown, 0 Unchecked, 4634.66ms Time] [2021-11-02 12:37:14,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-11-02 12:37:14,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 190. [2021-11-02 12:37:14,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 184 states have (on average 1.1630434782608696) internal successors, (214), 189 states have internal predecessors, (214), 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 12:37:14,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 214 transitions. [2021-11-02 12:37:14,082 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 214 transitions. Word has length 74 [2021-11-02 12:37:14,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:37:14,082 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 214 transitions. [2021-11-02 12:37:14,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:14,082 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 214 transitions. [2021-11-02 12:37:14,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 12:37:14,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:37:14,083 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:37:14,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 12:37:14,083 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:37:14,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:37:14,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1177649340, now seen corresponding path program 1 times [2021-11-02 12:37:14,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:37:14,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146614349] [2021-11-02 12:37:14,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:37:14,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:37:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:37:14,452 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 12:37:14,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:37:14,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146614349] [2021-11-02 12:37:14,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146614349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:37:14,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:37:14,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:37:14,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492322315] [2021-11-02 12:37:14,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:37:14,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:37:14,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:37:14,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:37:14,454 INFO L87 Difference]: Start difference. First operand 190 states and 214 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:17,195 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:37:20,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:37:20,915 INFO L93 Difference]: Finished difference Result 483 states and 545 transitions. [2021-11-02 12:37:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 12:37:20,915 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-02 12:37:20,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:37:20,916 INFO L225 Difference]: With dead ends: 483 [2021-11-02 12:37:20,916 INFO L226 Difference]: Without dead ends: 333 [2021-11-02 12:37:20,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 462.30ms TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-02 12:37:20,917 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 253 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5740.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.33ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6110.23ms IncrementalHoareTripleChecker+Time [2021-11-02 12:37:20,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 0 Invalid, 1091 Unknown, 0 Unchecked, 9.33ms Time], IncrementalHoareTripleChecker [24 Valid, 1066 Invalid, 1 Unknown, 0 Unchecked, 6110.23ms Time] [2021-11-02 12:37:20,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-02 12:37:20,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 207. [2021-11-02 12:37:20,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 201 states have (on average 1.144278606965174) internal successors, (230), 206 states have internal predecessors, (230), 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 12:37:20,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 230 transitions. [2021-11-02 12:37:20,922 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 230 transitions. Word has length 74 [2021-11-02 12:37:20,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:37:20,922 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 230 transitions. [2021-11-02 12:37:20,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:20,923 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 230 transitions. [2021-11-02 12:37:20,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 12:37:20,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:37:20,927 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:37:20,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 12:37:20,927 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:37:20,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:37:20,928 INFO L85 PathProgramCache]: Analyzing trace with hash -783282554, now seen corresponding path program 1 times [2021-11-02 12:37:20,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:37:20,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41056446] [2021-11-02 12:37:20,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:37:20,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:37:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:37:22,998 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 12:37:22,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:37:22,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41056446] [2021-11-02 12:37:22,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41056446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:37:22,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:37:22,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 12:37:22,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121079632] [2021-11-02 12:37:22,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 12:37:22,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:37:22,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 12:37:22,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:37:22,999 INFO L87 Difference]: Start difference. First operand 207 states and 230 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:25,048 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 12:37:27,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:37:27,973 INFO L93 Difference]: Finished difference Result 340 states and 382 transitions. [2021-11-02 12:37:27,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 12:37:27,974 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-02 12:37:27,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:37:27,975 INFO L225 Difference]: With dead ends: 340 [2021-11-02 12:37:27,975 INFO L226 Difference]: Without dead ends: 209 [2021-11-02 12:37:27,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 563.94ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:37:27,976 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 316 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4412.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.78ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4675.03ms IncrementalHoareTripleChecker+Time [2021-11-02 12:37:27,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 0 Invalid, 890 Unknown, 0 Unchecked, 7.78ms Time], IncrementalHoareTripleChecker [12 Valid, 877 Invalid, 1 Unknown, 0 Unchecked, 4675.03ms Time] [2021-11-02 12:37:27,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-02 12:37:27,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 203. [2021-11-02 12:37:27,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 197 states have (on average 1.1421319796954315) internal successors, (225), 202 states have internal predecessors, (225), 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 12:37:27,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 225 transitions. [2021-11-02 12:37:27,980 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 225 transitions. Word has length 74 [2021-11-02 12:37:27,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:37:27,981 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 225 transitions. [2021-11-02 12:37:27,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:27,982 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 225 transitions. [2021-11-02 12:37:27,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-02 12:37:27,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:37:27,982 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:37:27,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 12:37:27,983 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:37:27,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:37:27,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1580395081, now seen corresponding path program 1 times [2021-11-02 12:37:27,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:37:27,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581911462] [2021-11-02 12:37:27,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:37:27,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:37:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:37:29,866 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 12:37:29,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:37:29,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581911462] [2021-11-02 12:37:29,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581911462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:37:29,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:37:29,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 12:37:29,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938535643] [2021-11-02 12:37:29,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 12:37:29,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:37:29,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 12:37:29,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:37:29,868 INFO L87 Difference]: Start difference. First operand 203 states and 225 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:32,433 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:37:35,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:37:35,289 INFO L93 Difference]: Finished difference Result 385 states and 433 transitions. [2021-11-02 12:37:35,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 12:37:35,290 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-02 12:37:35,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:37:35,291 INFO L225 Difference]: With dead ends: 385 [2021-11-02 12:37:35,291 INFO L226 Difference]: Without dead ends: 272 [2021-11-02 12:37:35,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 489.50ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:37:35,291 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 722 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4778.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.47ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5117.65ms IncrementalHoareTripleChecker+Time [2021-11-02 12:37:35,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 0 Invalid, 793 Unknown, 0 Unchecked, 9.47ms Time], IncrementalHoareTripleChecker [14 Valid, 778 Invalid, 1 Unknown, 0 Unchecked, 5117.65ms Time] [2021-11-02 12:37:35,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-02 12:37:35,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 203. [2021-11-02 12:37:35,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 197 states have (on average 1.1370558375634519) internal successors, (224), 202 states have internal predecessors, (224), 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 12:37:35,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 224 transitions. [2021-11-02 12:37:35,296 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 224 transitions. Word has length 80 [2021-11-02 12:37:35,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:37:35,296 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 224 transitions. [2021-11-02 12:37:35,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:35,296 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 224 transitions. [2021-11-02 12:37:35,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-02 12:37:35,297 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:37:35,297 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, 1, 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 12:37:35,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 12:37:35,297 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:37:35,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:37:35,297 INFO L85 PathProgramCache]: Analyzing trace with hash 522395916, now seen corresponding path program 1 times [2021-11-02 12:37:35,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:37:35,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165341916] [2021-11-02 12:37:35,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:37:35,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:37:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:37:37,925 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 12:37:37,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:37:37,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165341916] [2021-11-02 12:37:37,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165341916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:37:37,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:37:37,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 12:37:37,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030293319] [2021-11-02 12:37:37,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 12:37:37,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:37:37,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 12:37:37,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:37:37,926 INFO L87 Difference]: Start difference. First operand 203 states and 224 transitions. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 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 12:37:40,625 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:37:44,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:37:44,826 INFO L93 Difference]: Finished difference Result 433 states and 479 transitions. [2021-11-02 12:37:44,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 12:37:44,826 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 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 86 [2021-11-02 12:37:44,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:37:44,827 INFO L225 Difference]: With dead ends: 433 [2021-11-02 12:37:44,827 INFO L226 Difference]: Without dead ends: 332 [2021-11-02 12:37:44,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 737.55ms TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2021-11-02 12:37:44,828 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 588 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 1405 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6040.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.27ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1405 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6398.42ms IncrementalHoareTripleChecker+Time [2021-11-02 12:37:44,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 0 Invalid, 1433 Unknown, 0 Unchecked, 12.27ms Time], IncrementalHoareTripleChecker [27 Valid, 1405 Invalid, 1 Unknown, 0 Unchecked, 6398.42ms Time] [2021-11-02 12:37:44,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-11-02 12:37:44,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 231. [2021-11-02 12:37:44,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 225 states have (on average 1.1377777777777778) internal successors, (256), 230 states have internal predecessors, (256), 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 12:37:44,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 256 transitions. [2021-11-02 12:37:44,834 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 256 transitions. Word has length 86 [2021-11-02 12:37:44,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:37:44,834 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 256 transitions. [2021-11-02 12:37:44,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 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 12:37:44,834 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 256 transitions. [2021-11-02 12:37:44,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-02 12:37:44,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:37:44,837 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, 1, 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 12:37:44,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 12:37:44,838 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:37:44,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:37:44,839 INFO L85 PathProgramCache]: Analyzing trace with hash -230555896, now seen corresponding path program 1 times [2021-11-02 12:37:44,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:37:44,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118475952] [2021-11-02 12:37:44,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:37:44,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:37:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:37:47,336 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 12:37:47,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:37:47,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118475952] [2021-11-02 12:37:47,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118475952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:37:47,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:37:47,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 12:37:47,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016102250] [2021-11-02 12:37:47,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 12:37:47,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:37:47,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 12:37:47,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:37:47,337 INFO L87 Difference]: Start difference. First operand 231 states and 256 transitions. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 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 12:37:49,843 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:37:54,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:37:54,488 INFO L93 Difference]: Finished difference Result 368 states and 407 transitions. [2021-11-02 12:37:54,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 12:37:54,489 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 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 86 [2021-11-02 12:37:54,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:37:54,490 INFO L225 Difference]: With dead ends: 368 [2021-11-02 12:37:54,490 INFO L226 Difference]: Without dead ends: 266 [2021-11-02 12:37:54,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 886.56ms TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-11-02 12:37:54,491 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 532 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6089.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.22ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6482.86ms IncrementalHoareTripleChecker+Time [2021-11-02 12:37:54,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 0 Invalid, 1278 Unknown, 0 Unchecked, 13.22ms Time], IncrementalHoareTripleChecker [15 Valid, 1262 Invalid, 1 Unknown, 0 Unchecked, 6482.86ms Time] [2021-11-02 12:37:54,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-02 12:37:54,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 231. [2021-11-02 12:37:54,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 225 states have (on average 1.1333333333333333) internal successors, (255), 230 states have internal predecessors, (255), 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 12:37:54,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 255 transitions. [2021-11-02 12:37:54,505 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 255 transitions. Word has length 86 [2021-11-02 12:37:54,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:37:54,506 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 255 transitions. [2021-11-02 12:37:54,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 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 12:37:54,506 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 255 transitions. [2021-11-02 12:37:54,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 12:37:54,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:37:54,511 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, 1, 1, 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 12:37:54,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 12:37:54,512 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:37:54,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:37:54,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1357387350, now seen corresponding path program 1 times [2021-11-02 12:37:54,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:37:54,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931935924] [2021-11-02 12:37:54,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:37:54,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:37:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:37:57,448 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 12:37:57,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:37:57,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931935924] [2021-11-02 12:37:57,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931935924] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:37:57,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:37:57,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 12:37:57,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565100683] [2021-11-02 12:37:57,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 12:37:57,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:37:57,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 12:37:57,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:37:57,449 INFO L87 Difference]: Start difference. First operand 231 states and 255 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:37:59,496 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 12:38:03,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:38:03,110 INFO L93 Difference]: Finished difference Result 341 states and 377 transitions. [2021-11-02 12:38:03,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 12:38:03,110 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-02 12:38:03,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:38:03,111 INFO L225 Difference]: With dead ends: 341 [2021-11-02 12:38:03,111 INFO L226 Difference]: Without dead ends: 255 [2021-11-02 12:38:03,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 535.17ms TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-11-02 12:38:03,112 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 597 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5033.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.06ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5335.09ms IncrementalHoareTripleChecker+Time [2021-11-02 12:38:03,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [597 Valid, 0 Invalid, 1083 Unknown, 0 Unchecked, 11.06ms Time], IncrementalHoareTripleChecker [18 Valid, 1064 Invalid, 1 Unknown, 0 Unchecked, 5335.09ms Time] [2021-11-02 12:38:03,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-02 12:38:03,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 229. [2021-11-02 12:38:03,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 223 states have (on average 1.1300448430493273) internal successors, (252), 228 states have internal predecessors, (252), 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 12:38:03,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 252 transitions. [2021-11-02 12:38:03,117 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 252 transitions. Word has length 87 [2021-11-02 12:38:03,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:38:03,117 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 252 transitions. [2021-11-02 12:38:03,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:38:03,118 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 252 transitions. [2021-11-02 12:38:03,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 12:38:03,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:38:03,131 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, 1, 1, 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 12:38:03,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 12:38:03,132 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:38:03,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:38:03,132 INFO L85 PathProgramCache]: Analyzing trace with hash -2037445720, now seen corresponding path program 1 times [2021-11-02 12:38:03,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:38:03,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859847532] [2021-11-02 12:38:03,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:38:03,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:38:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:38:03,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:38:03,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:38:03,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859847532] [2021-11-02 12:38:03,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859847532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:38:03,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:38:03,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:38:03,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970496772] [2021-11-02 12:38:03,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:38:03,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:38:03,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:38:03,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:38:03,472 INFO L87 Difference]: Start difference. First operand 229 states and 252 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:38:05,517 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 12:38:08,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:38:08,556 INFO L93 Difference]: Finished difference Result 338 states and 372 transitions. [2021-11-02 12:38:08,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 12:38:08,556 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-02 12:38:08,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:38:08,557 INFO L225 Difference]: With dead ends: 338 [2021-11-02 12:38:08,557 INFO L226 Difference]: Without dead ends: 241 [2021-11-02 12:38:08,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 384.51ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:38:08,558 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4493.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.65ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4765.60ms IncrementalHoareTripleChecker+Time [2021-11-02 12:38:08,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 869 Unknown, 0 Unchecked, 6.65ms Time], IncrementalHoareTripleChecker [9 Valid, 859 Invalid, 1 Unknown, 0 Unchecked, 4765.60ms Time] [2021-11-02 12:38:08,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-02 12:38:08,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 229. [2021-11-02 12:38:08,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 223 states have (on average 1.1210762331838564) internal successors, (250), 228 states have internal predecessors, (250), 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 12:38:08,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 250 transitions. [2021-11-02 12:38:08,564 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 250 transitions. Word has length 87 [2021-11-02 12:38:08,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:38:08,565 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 250 transitions. [2021-11-02 12:38:08,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:38:08,565 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 250 transitions. [2021-11-02 12:38:08,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 12:38:08,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:38:08,565 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, 1, 1, 1, 1, 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 12:38:08,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 12:38:08,566 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:38:08,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:38:08,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1636843523, now seen corresponding path program 1 times [2021-11-02 12:38:08,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:38:08,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698319376] [2021-11-02 12:38:08,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:38:08,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:38:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:38:08,994 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 12:38:08,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:38:08,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698319376] [2021-11-02 12:38:08,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698319376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:38:08,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:38:08,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:38:08,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874066185] [2021-11-02 12:38:08,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:38:08,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:38:08,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:38:08,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:38:08,995 INFO L87 Difference]: Start difference. First operand 229 states and 250 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:38:11,838 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:38:16,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:38:16,299 INFO L93 Difference]: Finished difference Result 394 states and 433 transitions. [2021-11-02 12:38:16,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 12:38:16,300 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-02 12:38:16,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:38:16,301 INFO L225 Difference]: With dead ends: 394 [2021-11-02 12:38:16,301 INFO L226 Difference]: Without dead ends: 390 [2021-11-02 12:38:16,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 619.31ms TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-11-02 12:38:16,301 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 296 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 106 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6358.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.35ms SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6788.09ms IncrementalHoareTripleChecker+Time [2021-11-02 12:38:16,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 0 Invalid, 1258 Unknown, 0 Unchecked, 11.35ms Time], IncrementalHoareTripleChecker [106 Valid, 1151 Invalid, 1 Unknown, 0 Unchecked, 6788.09ms Time] [2021-11-02 12:38:16,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-11-02 12:38:16,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 232. [2021-11-02 12:38:16,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 226 states have (on average 1.1150442477876106) internal successors, (252), 231 states have internal predecessors, (252), 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 12:38:16,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 252 transitions. [2021-11-02 12:38:16,309 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 252 transitions. Word has length 89 [2021-11-02 12:38:16,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:38:16,309 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 252 transitions. [2021-11-02 12:38:16,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:38:16,309 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 252 transitions. [2021-11-02 12:38:16,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 12:38:16,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:38:16,310 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, 1, 1, 1, 1, 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 12:38:16,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-02 12:38:16,310 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:38:16,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:38:16,310 INFO L85 PathProgramCache]: Analyzing trace with hash -2111945076, now seen corresponding path program 1 times [2021-11-02 12:38:16,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:38:16,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263211140] [2021-11-02 12:38:16,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:38:16,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:38:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:38:20,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:38:20,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:38:20,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263211140] [2021-11-02 12:38:20,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263211140] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 12:38:20,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54267626] [2021-11-02 12:38:20,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:38:20,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:38:20,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:38:20,608 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 12:38:20,610 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 12:38:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:38:21,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 2959 conjuncts, 70 conjunts are in the unsatisfiable core [2021-11-02 12:38:21,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:38:21,984 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 19 treesize of output 15 [2021-11-02 12:38:23,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 12:38:23,210 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 19 treesize of output 9 [2021-11-02 12:38:23,667 INFO L354 Elim1Store]: treesize reduction 168, result has 18.0 percent of original size [2021-11-02 12:38:23,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 128 treesize of output 154 [2021-11-02 12:38:23,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:38:23,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 25 [2021-11-02 12:38:23,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:38:23,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 25 [2021-11-02 12:38:24,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:38:24,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 23 [2021-11-02 12:38:24,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:38:24,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 23 [2021-11-02 12:38:24,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:38:24,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 23 [2021-11-02 12:38:24,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:38:24,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 23 [2021-11-02 12:38:26,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:38:26,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 79 [2021-11-02 12:38:27,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:38:27,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 39 [2021-11-02 12:39:19,381 INFO L354 Elim1Store]: treesize reduction 318, result has 12.9 percent of original size [2021-11-02 12:39:19,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 337 treesize of output 208 [2021-11-02 12:39:27,159 INFO L354 Elim1Store]: treesize reduction 150, result has 36.2 percent of original size [2021-11-02 12:39:27,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 354 treesize of output 248 [2021-11-02 12:39:28,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:39:28,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 12:39:43,279 WARN L210 SmtUtils]: Spent 6.24s on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2021-11-02 12:39:47,833 INFO L354 Elim1Store]: treesize reduction 71, result has 47.4 percent of original size [2021-11-02 12:39:47,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 96 treesize of output 123 [2021-11-02 12:39:47,842 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 123 treesize of output 119 [2021-11-02 12:39:47,868 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-02 12:39:47,868 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 119 treesize of output 117 [2021-11-02 12:39:47,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-11-02 12:39:47,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 12:39:47,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-11-02 12:39:47,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341592080] [2021-11-02 12:39:47,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 12:39:47,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:39:47,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 12:39:47,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=888, Unknown=4, NotChecked=0, Total=992 [2021-11-02 12:39:47,875 INFO L87 Difference]: Start difference. First operand 232 states and 252 transitions. Second operand has 17 states, 17 states have (on average 5.235294117647059) internal successors, (89), 17 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:39:47,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 12:39:47,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 25387.26ms TimeCoverageRelationStatistics Valid=100, Invalid=888, Unknown=4, NotChecked=0, Total=992 [2021-11-02 12:39:47,877 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.01ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-02 12:39:47,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.01ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-02 12:39:47,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-02 12:39:48,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-02 12:39:48,088 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@47983fec at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:359) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-02 12:39:48,091 INFO L158 Benchmark]: Toolchain (without parser) took 235028.99ms. Allocated memory was 102.8MB in the beginning and 734.0MB in the end (delta: 631.2MB). Free memory was 65.2MB in the beginning and 500.4MB in the end (delta: -435.3MB). Peak memory consumption was 195.3MB. Max. memory is 16.1GB. [2021-11-02 12:39:48,091 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 102.8MB. Free memory is still 59.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-02 12:39:48,091 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1552.75ms. Allocated memory was 102.8MB in the beginning and 144.7MB in the end (delta: 41.9MB). Free memory was 64.9MB in the beginning and 89.2MB in the end (delta: -24.3MB). Peak memory consumption was 68.7MB. Max. memory is 16.1GB. [2021-11-02 12:39:48,091 INFO L158 Benchmark]: Boogie Procedure Inliner took 157.35ms. Allocated memory is still 144.7MB. Free memory was 89.2MB in the beginning and 76.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-02 12:39:48,092 INFO L158 Benchmark]: Boogie Preprocessor took 83.03ms. Allocated memory is still 144.7MB. Free memory was 76.7MB in the beginning and 67.4MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-02 12:39:48,092 INFO L158 Benchmark]: RCFGBuilder took 4688.78ms. Allocated memory was 144.7MB in the beginning and 497.0MB in the end (delta: 352.3MB). Free memory was 67.4MB in the beginning and 189.9MB in the end (delta: -122.4MB). Peak memory consumption was 281.9MB. Max. memory is 16.1GB. [2021-11-02 12:39:48,092 INFO L158 Benchmark]: TraceAbstraction took 228542.75ms. Allocated memory was 497.0MB in the beginning and 734.0MB in the end (delta: 237.0MB). Free memory was 189.9MB in the beginning and 500.4MB in the end (delta: -310.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-02 12:39:48,093 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 102.8MB. Free memory is still 59.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1552.75ms. Allocated memory was 102.8MB in the beginning and 144.7MB in the end (delta: 41.9MB). Free memory was 64.9MB in the beginning and 89.2MB in the end (delta: -24.3MB). Peak memory consumption was 68.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 157.35ms. Allocated memory is still 144.7MB. Free memory was 89.2MB in the beginning and 76.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 83.03ms. Allocated memory is still 144.7MB. Free memory was 76.7MB in the beginning and 67.4MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 4688.78ms. Allocated memory was 144.7MB in the beginning and 497.0MB in the end (delta: 352.3MB). Free memory was 67.4MB in the beginning and 189.9MB in the end (delta: -122.4MB). Peak memory consumption was 281.9MB. Max. memory is 16.1GB. * TraceAbstraction took 228542.75ms. Allocated memory was 497.0MB in the beginning and 734.0MB in the end (delta: 237.0MB). Free memory was 189.9MB in the beginning and 500.4MB in the end (delta: -310.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@47983fec de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@47983fec: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-02 12:39:48,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 12:39:49,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 12:39:49,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 12:39:49,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 12:39:49,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 12:39:49,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 12:39:49,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 12:39:49,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 12:39:49,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 12:39:49,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 12:39:49,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 12:39:49,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 12:39:49,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 12:39:49,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 12:39:49,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 12:39:49,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 12:39:49,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 12:39:49,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 12:39:49,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 12:39:49,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 12:39:49,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 12:39:49,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 12:39:49,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 12:39:49,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 12:39:49,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 12:39:49,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 12:39:49,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 12:39:49,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 12:39:50,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 12:39:50,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 12:39:50,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 12:39:50,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 12:39:50,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 12:39:50,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 12:39:50,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 12:39:50,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 12:39:50,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 12:39:50,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 12:39:50,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 12:39:50,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 12:39:50,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 12:39:50,010 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-02 12:39:50,056 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 12:39:50,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 12:39:50,058 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 12:39:50,058 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 12:39:50,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 12:39:50,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 12:39:50,060 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 12:39:50,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 12:39:50,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 12:39:50,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 12:39:50,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 12:39:50,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 12:39:50,061 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-02 12:39:50,062 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-02 12:39:50,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 12:39:50,062 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 12:39:50,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 12:39:50,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 12:39:50,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 12:39:50,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 12:39:50,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 12:39:50,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 12:39:50,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 12:39:50,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 12:39:50,063 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-02 12:39:50,063 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-02 12:39:50,063 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 12:39:50,064 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 12:39:50,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 12:39:50,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 12:39:50,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-02 12:39:50,064 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 [2021-11-02 12:39:50,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 12:39:50,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 12:39:50,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 12:39:50,397 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 12:39:50,397 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 12:39:50,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2021-11-02 12:39:50,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e189792d0/0355f33abce447268aead5143559ce26/FLAG27b30c69e [2021-11-02 12:39:51,129 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 12:39:51,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2021-11-02 12:39:51,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e189792d0/0355f33abce447268aead5143559ce26/FLAG27b30c69e [2021-11-02 12:39:51,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e189792d0/0355f33abce447268aead5143559ce26 [2021-11-02 12:39:51,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 12:39:51,486 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 12:39:51,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 12:39:51,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 12:39:51,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 12:39:51,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:39:51" (1/1) ... [2021-11-02 12:39:51,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c5da8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:51, skipping insertion in model container [2021-11-02 12:39:51,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:39:51" (1/1) ... [2021-11-02 12:39:51,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 12:39:51,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 12:39:51,812 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_byte_buf_clean_up_secure_harness.i[4502,4515] [2021-11-02 12:39:51,820 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_byte_buf_clean_up_secure_harness.i[4562,4575] [2021-11-02 12:39:51,848 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 12:39:51,853 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 12:39:52,350 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:52,350 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:52,351 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:52,352 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:52,352 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:52,361 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:52,362 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:52,363 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:52,363 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:52,614 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 12:39:52,615 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 12:39:52,617 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 12:39:52,618 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 12:39:52,622 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 12:39:52,623 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 12:39:52,625 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 12:39:52,627 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 12:39:52,627 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 12:39:52,628 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 12:39:52,732 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 12:39:52,833 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:52,834 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:52,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 12:39:52,973 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 12:39:52,994 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_byte_buf_clean_up_secure_harness.i[4502,4515] [2021-11-02 12:39:52,995 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_byte_buf_clean_up_secure_harness.i[4562,4575] [2021-11-02 12:39:52,998 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 12:39:52,998 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 12:39:53,034 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:53,035 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:53,037 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:53,038 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:53,039 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:53,046 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:53,047 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:53,048 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:53,048 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:53,087 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 12:39:53,088 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 12:39:53,101 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 12:39:53,104 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 12:39:53,105 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 12:39:53,106 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 12:39:53,106 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 12:39:53,106 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 12:39:53,107 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 12:39:53,107 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 12:39:53,135 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 12:39:53,189 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:53,189 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:39:53,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 12:39:53,494 INFO L208 MainTranslator]: Completed translation [2021-11-02 12:39:53,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53 WrapperNode [2021-11-02 12:39:53,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 12:39:53,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 12:39:53,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 12:39:53,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 12:39:53,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53" (1/1) ... [2021-11-02 12:39:53,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53" (1/1) ... [2021-11-02 12:39:53,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 12:39:53,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 12:39:53,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 12:39:53,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 12:39:53,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53" (1/1) ... [2021-11-02 12:39:53,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53" (1/1) ... [2021-11-02 12:39:53,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53" (1/1) ... [2021-11-02 12:39:53,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53" (1/1) ... [2021-11-02 12:39:53,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53" (1/1) ... [2021-11-02 12:39:53,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53" (1/1) ... [2021-11-02 12:39:53,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53" (1/1) ... [2021-11-02 12:39:53,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 12:39:53,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 12:39:53,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 12:39:53,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 12:39:53,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53" (1/1) ... [2021-11-02 12:39:53,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 12:39:53,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:39:53,807 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 12:39:53,817 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 12:39:53,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 12:39:53,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-02 12:39:53,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-02 12:39:53,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 12:39:53,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 12:39:53,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 12:39:53,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 12:39:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-02 12:39:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 12:39:53,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 12:39:53,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-02 12:39:53,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-02 12:39:53,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 12:40:00,325 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 12:40:00,325 INFO L299 CfgBuilder]: Removed 73 assume(true) statements. [2021-11-02 12:40:00,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:40:00 BoogieIcfgContainer [2021-11-02 12:40:00,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 12:40:00,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 12:40:00,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 12:40:00,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 12:40:00,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:39:51" (1/3) ... [2021-11-02 12:40:00,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795b7471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:40:00, skipping insertion in model container [2021-11-02 12:40:00,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:53" (2/3) ... [2021-11-02 12:40:00,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795b7471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:40:00, skipping insertion in model container [2021-11-02 12:40:00,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:40:00" (3/3) ... [2021-11-02 12:40:00,333 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_secure_harness.i [2021-11-02 12:40:00,336 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 12:40:00,337 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-02 12:40:00,367 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 12:40:00,371 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 12:40:00,372 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-02 12:40:00,383 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 154 states have (on average 1.4610389610389611) internal successors, (225), 160 states have internal predecessors, (225), 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 12:40:00,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-02 12:40:00,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:40:00,388 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] [2021-11-02 12:40:00,388 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:40:00,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:40:00,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1283718026, now seen corresponding path program 1 times [2021-11-02 12:40:00,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 12:40:00,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086557440] [2021-11-02 12:40:00,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:40:00,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 12:40:00,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 12:40:00,409 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 12:40:00,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-02 12:40:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:40:02,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 1606 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-02 12:40:02,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:40:02,852 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 12:40:02,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 12:40:02,909 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 12:40:02,910 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 12:40:02,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086557440] [2021-11-02 12:40:02,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086557440] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 12:40:02,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:40:02,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 12:40:02,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807274382] [2021-11-02 12:40:02,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 12:40:02,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 12:40:02,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 12:40:02,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 12:40:02,936 INFO L87 Difference]: Start difference. First operand has 161 states, 154 states have (on average 1.4610389610389611) internal successors, (225), 160 states have internal predecessors, (225), 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 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:05,228 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:40:06,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:40:06,230 INFO L93 Difference]: Finished difference Result 318 states and 445 transitions. [2021-11-02 12:40:06,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 12:40:06,233 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-02 12:40:06,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:40:06,239 INFO L225 Difference]: With dead ends: 318 [2021-11-02 12:40:06,242 INFO L226 Difference]: Without dead ends: 156 [2021-11-02 12:40:06,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.30ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 12:40:06,248 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3034.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.85ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3229.19ms IncrementalHoareTripleChecker+Time [2021-11-02 12:40:06,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 209 Unknown, 0 Unchecked, 3.85ms Time], IncrementalHoareTripleChecker [0 Valid, 208 Invalid, 1 Unknown, 0 Unchecked, 3229.19ms Time] [2021-11-02 12:40:06,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-02 12:40:06,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-11-02 12:40:06,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 150 states have (on average 1.36) internal successors, (204), 155 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 12:40:06,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 204 transitions. [2021-11-02 12:40:06,319 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 204 transitions. Word has length 34 [2021-11-02 12:40:06,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:40:06,326 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 204 transitions. [2021-11-02 12:40:06,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:06,327 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 204 transitions. [2021-11-02 12:40:06,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-02 12:40:06,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:40:06,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:40:06,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-02 12:40:06,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 12:40:06,556 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:40:06,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:40:06,556 INFO L85 PathProgramCache]: Analyzing trace with hash 27354892, now seen corresponding path program 1 times [2021-11-02 12:40:06,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 12:40:06,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077265146] [2021-11-02 12:40:06,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:40:06,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 12:40:06,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 12:40:06,568 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 12:40:06,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-02 12:40:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:40:08,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 1606 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 12:40:08,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:40:09,252 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 12:40:09,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 12:40:09,456 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 12:40:09,456 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 12:40:09,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077265146] [2021-11-02 12:40:09,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077265146] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 12:40:09,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:40:09,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 12:40:09,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500830826] [2021-11-02 12:40:09,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:40:09,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 12:40:09,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:40:09,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:40:09,458 INFO L87 Difference]: Start difference. First operand 156 states and 204 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:11,701 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:40:12,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:40:12,882 INFO L93 Difference]: Finished difference Result 286 states and 374 transitions. [2021-11-02 12:40:12,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 12:40:12,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-02 12:40:12,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:40:12,883 INFO L225 Difference]: With dead ends: 286 [2021-11-02 12:40:12,883 INFO L226 Difference]: Without dead ends: 156 [2021-11-02 12:40:12,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.41ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:40:12,884 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 295 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3201.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.43ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3361.35ms IncrementalHoareTripleChecker+Time [2021-11-02 12:40:12,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 0 Invalid, 299 Unknown, 0 Unchecked, 8.43ms Time], IncrementalHoareTripleChecker [6 Valid, 292 Invalid, 1 Unknown, 0 Unchecked, 3361.35ms Time] [2021-11-02 12:40:12,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-02 12:40:12,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-11-02 12:40:12,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 150 states have (on average 1.3466666666666667) internal successors, (202), 155 states have internal predecessors, (202), 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 12:40:12,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 202 transitions. [2021-11-02 12:40:12,891 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 202 transitions. Word has length 34 [2021-11-02 12:40:12,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:40:12,891 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 202 transitions. [2021-11-02 12:40:12,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:12,892 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 202 transitions. [2021-11-02 12:40:12,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-02 12:40:12,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:40:12,893 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] [2021-11-02 12:40:12,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-02 12:40:13,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 12:40:13,105 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:40:13,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:40:13,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2136977490, now seen corresponding path program 1 times [2021-11-02 12:40:13,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 12:40:13,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417992919] [2021-11-02 12:40:13,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:40:13,110 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 12:40:13,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 12:40:13,116 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 12:40:13,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-02 12:40:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:40:15,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 1629 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 12:40:15,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:40:15,621 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 12:40:15,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 12:40:15,754 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 12:40:15,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 12:40:15,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417992919] [2021-11-02 12:40:15,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417992919] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 12:40:15,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:40:15,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 12:40:15,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257993704] [2021-11-02 12:40:15,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:40:15,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 12:40:15,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:40:15,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:40:15,756 INFO L87 Difference]: Start difference. First operand 156 states and 202 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:17,962 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:40:20,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:40:20,202 INFO L93 Difference]: Finished difference Result 347 states and 456 transitions. [2021-11-02 12:40:20,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:40:20,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-02 12:40:20,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:40:20,203 INFO L225 Difference]: With dead ends: 347 [2021-11-02 12:40:20,204 INFO L226 Difference]: Without dead ends: 216 [2021-11-02 12:40:20,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.51ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:40:20,205 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 138 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4134.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.40ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4372.90ms IncrementalHoareTripleChecker+Time [2021-11-02 12:40:20,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 0 Invalid, 643 Unknown, 0 Unchecked, 10.40ms Time], IncrementalHoareTripleChecker [21 Valid, 621 Invalid, 1 Unknown, 0 Unchecked, 4372.90ms Time] [2021-11-02 12:40:20,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-02 12:40:20,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 168. [2021-11-02 12:40:20,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 162 states have (on average 1.3209876543209877) internal successors, (214), 167 states have internal predecessors, (214), 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 12:40:20,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 214 transitions. [2021-11-02 12:40:20,215 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 214 transitions. Word has length 46 [2021-11-02 12:40:20,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:40:20,216 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 214 transitions. [2021-11-02 12:40:20,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:40:20,216 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 214 transitions. [2021-11-02 12:40:20,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-02 12:40:20,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:40:20,217 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] [2021-11-02 12:40:20,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-02 12:40:20,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 12:40:20,432 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:40:20,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:40:20,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1456389932, now seen corresponding path program 1 times [2021-11-02 12:40:20,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 12:40:20,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179162615] [2021-11-02 12:40:20,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:40:20,440 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 12:40:20,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 12:40:20,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 12:40:20,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-02 12:40:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:40:22,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-02 12:40:22,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:40:23,053 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 12:40:23,429 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 12:40:23,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 12:40:23,727 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 40 treesize of output 34 [2021-11-02 12:40:24,008 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 12:40:24,008 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 12:40:24,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179162615] [2021-11-02 12:40:24,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179162615] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 12:40:24,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:40:24,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 13 [2021-11-02 12:40:24,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226972613] [2021-11-02 12:40:24,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 12:40:24,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 12:40:24,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 12:40:24,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:40:24,010 INFO L87 Difference]: Start difference. First operand 168 states and 214 transitions. Second operand has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 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 12:40:26,239 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:40:32,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:40:32,447 INFO L93 Difference]: Finished difference Result 347 states and 445 transitions. [2021-11-02 12:40:32,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 12:40:32,448 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 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 46 [2021-11-02 12:40:32,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:40:32,449 INFO L225 Difference]: With dead ends: 347 [2021-11-02 12:40:32,449 INFO L226 Difference]: Without dead ends: 206 [2021-11-02 12:40:32,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1259.72ms TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2021-11-02 12:40:32,450 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 465 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7088.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.69ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7589.73ms IncrementalHoareTripleChecker+Time [2021-11-02 12:40:32,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 0 Invalid, 1304 Unknown, 0 Unchecked, 23.69ms Time], IncrementalHoareTripleChecker [22 Valid, 1281 Invalid, 1 Unknown, 0 Unchecked, 7589.73ms Time] [2021-11-02 12:40:32,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-02 12:40:32,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 164. [2021-11-02 12:40:32,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 158 states have (on average 1.3164556962025316) internal successors, (208), 163 states have internal predecessors, (208), 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 12:40:32,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 208 transitions. [2021-11-02 12:40:32,468 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 208 transitions. Word has length 46 [2021-11-02 12:40:32,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:40:32,468 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 208 transitions. [2021-11-02 12:40:32,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 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 12:40:32,468 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 208 transitions. [2021-11-02 12:40:32,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 12:40:32,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:40:32,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:40:32,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-02 12:40:32,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 12:40:32,683 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:40:32,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:40:32,684 INFO L85 PathProgramCache]: Analyzing trace with hash -738588498, now seen corresponding path program 1 times [2021-11-02 12:40:32,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 12:40:32,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115855106] [2021-11-02 12:40:32,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:40:32,687 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 12:40:32,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 12:40:32,688 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 12:40:32,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-02 12:40:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:40:34,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 1647 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 12:40:34,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:40:35,208 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-02 12:40:35,208 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 59 treesize of output 23 [2021-11-02 12:40:35,398 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 12:40:35,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 12:40:35,742 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 12:40:35,742 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 12:40:35,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115855106] [2021-11-02 12:40:35,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115855106] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 12:40:35,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:40:35,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-02 12:40:35,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570158330] [2021-11-02 12:40:35,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:40:35,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 12:40:35,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:40:35,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:40:35,743 INFO L87 Difference]: Start difference. First operand 164 states and 208 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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 12:40:37,957 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:40:43,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:40:43,608 INFO L93 Difference]: Finished difference Result 499 states and 628 transitions. [2021-11-02 12:40:43,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:40:43,610 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-02 12:40:43,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:40:43,611 INFO L225 Difference]: With dead ends: 499 [2021-11-02 12:40:43,611 INFO L226 Difference]: Without dead ends: 355 [2021-11-02 12:40:43,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 384.75ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:40:43,612 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 658 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7041.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.25ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7634.10ms IncrementalHoareTripleChecker+Time [2021-11-02 12:40:43,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 0 Invalid, 1244 Unknown, 0 Unchecked, 17.25ms Time], IncrementalHoareTripleChecker [39 Valid, 1204 Invalid, 1 Unknown, 0 Unchecked, 7634.10ms Time] [2021-11-02 12:40:43,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2021-11-02 12:40:43,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 202. [2021-11-02 12:40:43,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 196 states have (on average 1.3061224489795917) internal successors, (256), 201 states have internal predecessors, (256), 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 12:40:43,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 256 transitions. [2021-11-02 12:40:43,623 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 256 transitions. Word has length 54 [2021-11-02 12:40:43,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:40:43,624 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 256 transitions. [2021-11-02 12:40:43,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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 12:40:43,630 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 256 transitions. [2021-11-02 12:40:43,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 12:40:43,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:40:43,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:40:43,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-02 12:40:43,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 12:40:43,840 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:40:43,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:40:43,841 INFO L85 PathProgramCache]: Analyzing trace with hash -710253458, now seen corresponding path program 1 times [2021-11-02 12:40:43,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 12:40:43,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125351614] [2021-11-02 12:40:43,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:40:43,845 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 12:40:43,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 12:40:43,846 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 12:40:43,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-02 12:40:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:40:46,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 12:40:46,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:40:46,396 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-02 12:40:46,397 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 59 treesize of output 23 [2021-11-02 12:40:46,847 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 12:40:46,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 12:40:47,285 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 12:40:47,285 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 12:40:47,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125351614] [2021-11-02 12:40:47,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125351614] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 12:40:47,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:40:47,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2021-11-02 12:40:47,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014476419] [2021-11-02 12:40:47,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 12:40:47,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 12:40:47,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 12:40:47,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-02 12:40:47,287 INFO L87 Difference]: Start difference. First operand 202 states and 256 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 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 12:40:49,476 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:41:03,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:41:03,373 INFO L93 Difference]: Finished difference Result 588 states and 705 transitions. [2021-11-02 12:41:03,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 12:41:03,374 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-02 12:41:03,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:41:03,376 INFO L225 Difference]: With dead ends: 588 [2021-11-02 12:41:03,376 INFO L226 Difference]: Without dead ends: 327 [2021-11-02 12:41:03,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1710.04ms TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2021-11-02 12:41:03,378 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 399 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 3037 mSolverCounterSat, 146 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13810.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.81ms SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 3037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14765.51ms IncrementalHoareTripleChecker+Time [2021-11-02 12:41:03,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 0 Invalid, 3184 Unknown, 0 Unchecked, 26.81ms Time], IncrementalHoareTripleChecker [146 Valid, 3037 Invalid, 1 Unknown, 0 Unchecked, 14765.51ms Time] [2021-11-02 12:41:03,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-11-02 12:41:03,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 190. [2021-11-02 12:41:03,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 184 states have (on average 1.2282608695652173) internal successors, (226), 189 states have internal predecessors, (226), 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 12:41:03,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 226 transitions. [2021-11-02 12:41:03,386 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 226 transitions. Word has length 54 [2021-11-02 12:41:03,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:41:03,386 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 226 transitions. [2021-11-02 12:41:03,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 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 12:41:03,387 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 226 transitions. [2021-11-02 12:41:03,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 12:41:03,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:41:03,388 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, 1, 1, 1] [2021-11-02 12:41:03,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-02 12:41:03,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 12:41:03,599 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:41:03,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:41:03,600 INFO L85 PathProgramCache]: Analyzing trace with hash -869117129, now seen corresponding path program 1 times [2021-11-02 12:41:03,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 12:41:03,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603551799] [2021-11-02 12:41:03,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:41:03,603 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 12:41:03,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 12:41:03,604 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 12:41:03,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-02 12:41:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:41:05,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 1667 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-02 12:41:05,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:41:06,676 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 12:41:06,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 12:41:07,512 INFO L354 Elim1Store]: treesize reduction 51, result has 40.0 percent of original size [2021-11-02 12:41:07,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 45 [2021-11-02 12:41:08,236 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 12:41:08,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 12:41:08,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603551799] [2021-11-02 12:41:08,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603551799] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 12:41:08,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:41:08,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 13 [2021-11-02 12:41:08,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255074216] [2021-11-02 12:41:08,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 12:41:08,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 12:41:08,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 12:41:08,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-02 12:41:08,238 INFO L87 Difference]: Start difference. First operand 190 states and 226 transitions. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 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 12:41:10,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:41:17,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:41:17,563 INFO L93 Difference]: Finished difference Result 387 states and 454 transitions. [2021-11-02 12:41:17,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 12:41:17,564 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 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 64 [2021-11-02 12:41:17,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:41:17,564 INFO L225 Difference]: With dead ends: 387 [2021-11-02 12:41:17,565 INFO L226 Difference]: Without dead ends: 214 [2021-11-02 12:41:17,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1564.79ms TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2021-11-02 12:41:17,566 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 463 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7703.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.41ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8257.94ms IncrementalHoareTripleChecker+Time [2021-11-02 12:41:17,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 0 Invalid, 1436 Unknown, 0 Unchecked, 13.41ms Time], IncrementalHoareTripleChecker [26 Valid, 1409 Invalid, 1 Unknown, 0 Unchecked, 8257.94ms Time] [2021-11-02 12:41:17,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-02 12:41:17,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 182. [2021-11-02 12:41:17,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 176 states have (on average 1.1818181818181819) internal successors, (208), 181 states have internal predecessors, (208), 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 12:41:17,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 208 transitions. [2021-11-02 12:41:17,572 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 208 transitions. Word has length 64 [2021-11-02 12:41:17,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:41:17,572 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 208 transitions. [2021-11-02 12:41:17,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 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 12:41:17,572 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 208 transitions. [2021-11-02 12:41:17,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 12:41:17,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:41:17,573 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, 1, 1, 1] [2021-11-02 12:41:17,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-02 12:41:17,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 12:41:17,774 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:41:17,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:41:17,775 INFO L85 PathProgramCache]: Analyzing trace with hash -594357515, now seen corresponding path program 1 times [2021-11-02 12:41:17,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 12:41:17,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170837743] [2021-11-02 12:41:17,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:41:17,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 12:41:17,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 12:41:17,780 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 12:41:17,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-02 12:41:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:41:19,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 1664 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-02 12:41:19,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:41:20,668 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 12:41:20,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 12:41:21,258 INFO L354 Elim1Store]: treesize reduction 39, result has 46.6 percent of original size [2021-11-02 12:41:21,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 45 [2021-11-02 12:41:22,053 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 12:41:22,053 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 12:41:22,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170837743] [2021-11-02 12:41:22,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170837743] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 12:41:22,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:41:22,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 12 [2021-11-02 12:41:22,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210113873] [2021-11-02 12:41:22,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 12:41:22,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 12:41:22,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 12:41:22,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-02 12:41:22,055 INFO L87 Difference]: Start difference. First operand 182 states and 208 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 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 12:41:24,249 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:41:29,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:41:29,361 INFO L93 Difference]: Finished difference Result 463 states and 530 transitions. [2021-11-02 12:41:29,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 12:41:29,361 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 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 64 [2021-11-02 12:41:29,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:41:29,362 INFO L225 Difference]: With dead ends: 463 [2021-11-02 12:41:29,362 INFO L226 Difference]: Without dead ends: 321 [2021-11-02 12:41:29,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1024.65ms TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2021-11-02 12:41:29,363 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 659 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6243.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.25ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6603.72ms IncrementalHoareTripleChecker+Time [2021-11-02 12:41:29,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [659 Valid, 0 Invalid, 1220 Unknown, 0 Unchecked, 8.25ms Time], IncrementalHoareTripleChecker [41 Valid, 1178 Invalid, 1 Unknown, 0 Unchecked, 6603.72ms Time] [2021-11-02 12:41:29,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-11-02 12:41:29,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 199. [2021-11-02 12:41:29,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 193 states have (on average 1.160621761658031) internal successors, (224), 198 states have internal predecessors, (224), 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 12:41:29,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 224 transitions. [2021-11-02 12:41:29,368 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 224 transitions. Word has length 64 [2021-11-02 12:41:29,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:41:29,368 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 224 transitions. [2021-11-02 12:41:29,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 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 12:41:29,368 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 224 transitions. [2021-11-02 12:41:29,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 12:41:29,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:41:29,369 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, 1, 1, 1] [2021-11-02 12:41:29,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-02 12:41:29,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 12:41:29,570 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:41:29,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:41:29,570 INFO L85 PathProgramCache]: Analyzing trace with hash -656397129, now seen corresponding path program 1 times [2021-11-02 12:41:29,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 12:41:29,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654594670] [2021-11-02 12:41:29,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:41:29,573 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 12:41:29,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 12:41:29,574 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 12:41:29,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-02 12:41:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:41:31,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 1661 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-02 12:41:31,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:41:32,619 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 12:41:32,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 12:41:33,444 INFO L354 Elim1Store]: treesize reduction 51, result has 40.0 percent of original size [2021-11-02 12:41:33,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 45 [2021-11-02 12:41:34,186 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 12:41:34,186 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 12:41:34,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654594670] [2021-11-02 12:41:34,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654594670] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 12:41:34,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:41:34,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 14 [2021-11-02 12:41:34,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002746961] [2021-11-02 12:41:34,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 12:41:34,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 12:41:34,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 12:41:34,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-02 12:41:34,188 INFO L87 Difference]: Start difference. First operand 199 states and 224 transitions. Second operand has 14 states, 14 states have (on average 7.857142857142857) internal successors, (110), 14 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:36,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:41:43,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:41:43,816 INFO L93 Difference]: Finished difference Result 336 states and 382 transitions. [2021-11-02 12:41:43,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 12:41:43,817 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.857142857142857) internal successors, (110), 14 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-02 12:41:43,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:41:43,818 INFO L225 Difference]: With dead ends: 336 [2021-11-02 12:41:43,818 INFO L226 Difference]: Without dead ends: 213 [2021-11-02 12:41:43,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1526.62ms TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-11-02 12:41:43,819 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 452 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7975.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.27ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8597.77ms IncrementalHoareTripleChecker+Time [2021-11-02 12:41:43,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 0 Invalid, 1449 Unknown, 0 Unchecked, 11.27ms Time], IncrementalHoareTripleChecker [21 Valid, 1427 Invalid, 1 Unknown, 0 Unchecked, 8597.77ms Time] [2021-11-02 12:41:43,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-02 12:41:43,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 195. [2021-11-02 12:41:43,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 189 states have (on average 1.1587301587301588) internal successors, (219), 194 states have internal predecessors, (219), 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 12:41:43,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 219 transitions. [2021-11-02 12:41:43,825 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 219 transitions. Word has length 64 [2021-11-02 12:41:43,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:41:43,825 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 219 transitions. [2021-11-02 12:41:43,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.857142857142857) internal successors, (110), 14 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:41:43,825 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 219 transitions. [2021-11-02 12:41:43,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-02 12:41:43,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:41:43,826 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:41:43,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-02 12:41:44,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 12:41:44,037 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:41:44,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:41:44,037 INFO L85 PathProgramCache]: Analyzing trace with hash -795718360, now seen corresponding path program 1 times [2021-11-02 12:41:44,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 12:41:44,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052495225] [2021-11-02 12:41:44,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:41:44,041 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 12:41:44,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 12:41:44,042 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 12:41:44,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-02 12:41:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:41:46,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-02 12:41:46,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:41:46,809 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 12:41:47,809 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 16 treesize of output 8 [2021-11-02 12:41:47,881 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 12:41:47,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 12:41:48,617 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 40 treesize of output 34 [2021-11-02 12:41:48,933 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 12:41:48,934 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 12:41:48,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052495225] [2021-11-02 12:41:48,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052495225] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 12:41:48,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:41:48,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 14 [2021-11-02 12:41:48,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088753256] [2021-11-02 12:41:48,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 12:41:48,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 12:41:48,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 12:41:48,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-02 12:41:48,935 INFO L87 Difference]: Start difference. First operand 195 states and 219 transitions. Second operand has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 14 states have internal predecessors, (132), 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 12:41:51,153 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:41:57,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:41:57,811 INFO L93 Difference]: Finished difference Result 365 states and 418 transitions. [2021-11-02 12:41:57,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 12:41:57,812 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 14 states have internal predecessors, (132), 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 70 [2021-11-02 12:41:57,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:41:57,813 INFO L225 Difference]: With dead ends: 365 [2021-11-02 12:41:57,813 INFO L226 Difference]: Without dead ends: 260 [2021-11-02 12:41:57,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1027.53ms TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-11-02 12:41:57,814 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 861 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7814.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.42ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8429.24ms IncrementalHoareTripleChecker+Time [2021-11-02 12:41:57,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [861 Valid, 0 Invalid, 1225 Unknown, 0 Unchecked, 14.42ms Time], IncrementalHoareTripleChecker [16 Valid, 1208 Invalid, 1 Unknown, 0 Unchecked, 8429.24ms Time] [2021-11-02 12:41:57,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-11-02 12:41:57,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 195. [2021-11-02 12:41:57,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 189 states have (on average 1.1534391534391535) internal successors, (218), 194 states have internal predecessors, (218), 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 12:41:57,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 218 transitions. [2021-11-02 12:41:57,820 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 218 transitions. Word has length 70 [2021-11-02 12:41:57,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:41:57,820 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 218 transitions. [2021-11-02 12:41:57,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 14 states have internal predecessors, (132), 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 12:41:57,820 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 218 transitions. [2021-11-02 12:41:57,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 12:41:57,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:41:57,821 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:41:57,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-02 12:41:58,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 12:41:58,021 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:41:58,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:41:58,022 INFO L85 PathProgramCache]: Analyzing trace with hash -467038531, now seen corresponding path program 1 times [2021-11-02 12:41:58,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 12:41:58,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896119444] [2021-11-02 12:41:58,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:41:58,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 12:41:58,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 12:41:58,026 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 12:41:58,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-02 12:42:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:42:00,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 1703 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-02 12:42:00,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:42:01,715 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 12:42:01,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2021-11-02 12:42:01,905 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 12:42:01,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 12:42:05,718 INFO L354 Elim1Store]: treesize reduction 51, result has 40.0 percent of original size [2021-11-02 12:42:05,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 50 [2021-11-02 12:42:06,602 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 12:42:06,602 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 12:42:06,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896119444] [2021-11-02 12:42:06,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896119444] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 12:42:06,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:42:06,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 19 [2021-11-02 12:42:06,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427322769] [2021-11-02 12:42:06,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-02 12:42:06,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 12:42:06,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-02 12:42:06,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=276, Unknown=1, NotChecked=0, Total=342 [2021-11-02 12:42:06,604 INFO L87 Difference]: Start difference. First operand 195 states and 218 transitions. Second operand has 19 states, 19 states have (on average 7.421052631578948) internal successors, (141), 19 states have internal predecessors, (141), 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 12:42:08,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:42:18,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:42:18,636 INFO L93 Difference]: Finished difference Result 310 states and 350 transitions. [2021-11-02 12:42:18,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 12:42:18,638 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.421052631578948) internal successors, (141), 19 states have internal predecessors, (141), 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 76 [2021-11-02 12:42:18,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:42:18,638 INFO L225 Difference]: With dead ends: 310 [2021-11-02 12:42:18,638 INFO L226 Difference]: Without dead ends: 201 [2021-11-02 12:42:18,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 4975.81ms TimeCoverageRelationStatistics Valid=191, Invalid=564, Unknown=1, NotChecked=0, Total=756 [2021-11-02 12:42:18,639 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 250 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9518.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.45ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 10431.35ms IncrementalHoareTripleChecker+Time [2021-11-02 12:42:18,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 0 Invalid, 1587 Unknown, 0 Unchecked, 14.45ms Time], IncrementalHoareTripleChecker [26 Valid, 1558 Invalid, 1 Unknown, 2 Unchecked, 10431.35ms Time] [2021-11-02 12:42:18,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-02 12:42:18,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 195. [2021-11-02 12:42:18,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 189 states have (on average 1.1481481481481481) internal successors, (217), 194 states have internal predecessors, (217), 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 12:42:18,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 217 transitions. [2021-11-02 12:42:18,644 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 217 transitions. Word has length 76 [2021-11-02 12:42:18,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:42:18,644 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 217 transitions. [2021-11-02 12:42:18,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.421052631578948) internal successors, (141), 19 states have internal predecessors, (141), 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 12:42:18,644 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 217 transitions. [2021-11-02 12:42:18,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 12:42:18,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:42:18,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:42:18,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-02 12:42:18,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 12:42:18,861 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:42:18,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:42:18,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1023149089, now seen corresponding path program 1 times [2021-11-02 12:42:18,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 12:42:18,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491026519] [2021-11-02 12:42:18,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:42:18,866 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 12:42:18,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 12:42:18,867 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 12:42:18,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-02 12:42:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:42:21,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 1707 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 12:42:21,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:42:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:42:22,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 12:42:22,555 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 12:42:22,556 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 12:42:22,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491026519] [2021-11-02 12:42:22,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491026519] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 12:42:22,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:42:22,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-02 12:42:22,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390936994] [2021-11-02 12:42:22,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:42:22,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 12:42:22,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:42:22,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:42:22,557 INFO L87 Difference]: Start difference. First operand 195 states and 217 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 12:42:24,774 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:42:26,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:42:26,621 INFO L93 Difference]: Finished difference Result 277 states and 310 transitions. [2021-11-02 12:42:26,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 12:42:26,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 77 [2021-11-02 12:42:26,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:42:26,623 INFO L225 Difference]: With dead ends: 277 [2021-11-02 12:42:26,623 INFO L226 Difference]: Without dead ends: 195 [2021-11-02 12:42:26,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 310.67ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:42:26,623 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 473 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3604.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.60ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3853.98ms IncrementalHoareTripleChecker+Time [2021-11-02 12:42:26,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [473 Valid, 0 Invalid, 343 Unknown, 0 Unchecked, 3.60ms Time], IncrementalHoareTripleChecker [6 Valid, 336 Invalid, 1 Unknown, 0 Unchecked, 3853.98ms Time] [2021-11-02 12:42:26,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-02 12:42:26,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-11-02 12:42:26,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 189 states have (on average 1.1375661375661377) internal successors, (215), 194 states have internal predecessors, (215), 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 12:42:26,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 215 transitions. [2021-11-02 12:42:26,627 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 215 transitions. Word has length 77 [2021-11-02 12:42:26,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:42:26,628 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 215 transitions. [2021-11-02 12:42:26,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 12:42:26,628 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 215 transitions. [2021-11-02 12:42:26,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 12:42:26,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:42:26,628 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, 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 12:42:26,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-02 12:42:26,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 12:42:26,829 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:42:26,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:42:26,830 INFO L85 PathProgramCache]: Analyzing trace with hash 672628, now seen corresponding path program 1 times [2021-11-02 12:42:26,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 12:42:26,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473741798] [2021-11-02 12:42:26,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:42:26,833 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 12:42:26,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 12:42:26,834 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 12:42:26,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-02 12:42:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:42:29,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 12:42:29,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:42:29,514 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 12:42:29,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 12:42:29,714 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 12:42:29,715 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 12:42:29,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473741798] [2021-11-02 12:42:29,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473741798] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 12:42:29,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:42:29,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-02 12:42:29,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742809519] [2021-11-02 12:42:29,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:42:29,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 12:42:29,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:42:29,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:42:29,717 INFO L87 Difference]: Start difference. First operand 195 states and 215 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 12:42:31,935 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:42:36,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:42:36,833 INFO L93 Difference]: Finished difference Result 314 states and 350 transitions. [2021-11-02 12:42:36,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 12:42:36,833 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 83 [2021-11-02 12:42:36,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:42:36,834 INFO L225 Difference]: With dead ends: 314 [2021-11-02 12:42:36,834 INFO L226 Difference]: Without dead ends: 310 [2021-11-02 12:42:36,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 411.25ms TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-11-02 12:42:36,835 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 314 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6427.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.86ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6801.54ms IncrementalHoareTripleChecker+Time [2021-11-02 12:42:36,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 0 Invalid, 1131 Unknown, 0 Unchecked, 9.86ms Time], IncrementalHoareTripleChecker [46 Valid, 1084 Invalid, 1 Unknown, 0 Unchecked, 6801.54ms Time] [2021-11-02 12:42:36,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-11-02 12:42:36,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 203. [2021-11-02 12:42:36,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 197 states have (on average 1.131979695431472) internal successors, (223), 202 states have internal predecessors, (223), 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 12:42:36,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 223 transitions. [2021-11-02 12:42:36,840 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 223 transitions. Word has length 83 [2021-11-02 12:42:36,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:42:36,840 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 223 transitions. [2021-11-02 12:42:36,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 12:42:36,840 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 223 transitions. [2021-11-02 12:42:36,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 12:42:36,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:42:36,841 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, 1, 1, 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 12:42:36,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-02 12:42:37,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 12:42:37,041 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:42:37,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:42:37,042 INFO L85 PathProgramCache]: Analyzing trace with hash -604435538, now seen corresponding path program 1 times [2021-11-02 12:42:37,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 12:42:37,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879775414] [2021-11-02 12:42:37,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:42:37,045 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 12:42:37,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 12:42:37,047 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 12:42:37,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-02 12:42:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:42:44,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-02 12:42:44,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:42:46,045 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 12:42:46,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2021-11-02 12:42:46,440 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 12:42:46,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 12:42:49,162 INFO L354 Elim1Store]: treesize reduction 51, result has 40.0 percent of original size [2021-11-02 12:42:49,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 50 [2021-11-02 12:42:49,957 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 12:42:49,958 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 12:42:49,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879775414] [2021-11-02 12:42:49,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879775414] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 12:42:49,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:42:49,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 21 [2021-11-02 12:42:49,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005656860] [2021-11-02 12:42:49,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-02 12:42:49,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 12:42:49,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-02 12:42:49,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-11-02 12:42:49,959 INFO L87 Difference]: Start difference. First operand 203 states and 223 transitions. Second operand has 21 states, 21 states have (on average 7.285714285714286) internal successors, (153), 21 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 12:42:52,167 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:42:59,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:42:59,826 INFO L93 Difference]: Finished difference Result 327 states and 363 transitions. [2021-11-02 12:42:59,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 12:42:59,828 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.285714285714286) internal successors, (153), 21 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) Word has length 87 [2021-11-02 12:42:59,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:42:59,828 INFO L225 Difference]: With dead ends: 327 [2021-11-02 12:42:59,828 INFO L226 Difference]: Without dead ends: 210 [2021-11-02 12:42:59,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 4158.34ms TimeCoverageRelationStatistics Valid=207, Invalid=663, Unknown=0, NotChecked=0, Total=870 [2021-11-02 12:42:59,829 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 196 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7540.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.78ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 8195.41ms IncrementalHoareTripleChecker+Time [2021-11-02 12:42:59,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 0 Invalid, 1266 Unknown, 0 Unchecked, 8.78ms Time], IncrementalHoareTripleChecker [21 Valid, 1241 Invalid, 1 Unknown, 3 Unchecked, 8195.41ms Time] [2021-11-02 12:42:59,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-02 12:42:59,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 204. [2021-11-02 12:42:59,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 198 states have (on average 1.1313131313131313) internal successors, (224), 203 states have internal predecessors, (224), 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 12:42:59,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 224 transitions. [2021-11-02 12:42:59,834 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 224 transitions. Word has length 87 [2021-11-02 12:42:59,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:42:59,834 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 224 transitions. [2021-11-02 12:42:59,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.285714285714286) internal successors, (153), 21 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 12:42:59,834 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 224 transitions. [2021-11-02 12:42:59,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 12:42:59,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:42:59,835 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, 1, 1, 1, 1, 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 12:42:59,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-02 12:43:00,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 12:43:00,036 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 12:43:00,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:43:00,036 INFO L85 PathProgramCache]: Analyzing trace with hash -2111945076, now seen corresponding path program 1 times [2021-11-02 12:43:00,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 12:43:00,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778857233] [2021-11-02 12:43:00,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:43:00,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 12:43:00,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 12:43:00,041 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 12:43:00,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-02 12:44:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:44:45,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-02 12:44:45,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:44:45,180 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 12:44:45,539 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-02 12:44:45,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 15 treesize of output 15 [2021-11-02 12:44:45,629 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 19 treesize of output 1 [2021-11-02 12:44:45,645 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 12:44:48,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 12:44:48,005 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 18 treesize of output 8 [2021-11-02 12:44:48,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 12:44:48,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:44:48,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:44:48,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 12:44:48,558 INFO L354 Elim1Store]: treesize reduction 146, result has 14.6 percent of original size [2021-11-02 12:44:48,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 50 treesize of output 50 [2021-11-02 12:44:49,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 12:44:49,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:44:49,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:44:49,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:44:49,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:44:49,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:44:49,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 12:44:49,834 INFO L354 Elim1Store]: treesize reduction 91, result has 7.1 percent of original size [2021-11-02 12:44:49,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 67 treesize of output 64 [2021-11-02 12:44:50,249 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-02 12:44:50,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 90 treesize of output 46 [2021-11-02 12:44:50,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:44:50,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 12:44:58,086 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 222 treesize of output 198 [2021-11-02 12:46:48,755 WARN L210 SmtUtils]: Spent 1.84m on a formula simplification. DAG size of input: 120 DAG size of output: 101 [2021-11-02 12:46:48,756 INFO L354 Elim1Store]: treesize reduction 167, result has 64.5 percent of original size [2021-11-02 12:46:48,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 470 treesize of output 605 [2021-11-02 12:46:48,904 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-02 12:46:48,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 605 treesize of output 609 [2021-11-02 12:46:49,227 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-11-02 12:46:49,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 609 treesize of output 609 [2021-11-02 12:47:53,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-02 12:48:17,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2021-11-02 12:49:09,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-02 12:49:16,628 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-02 12:49:21,287 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-02 12:49:21,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 27 treesize of output 17 [2021-11-02 12:49:40,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 6 Killed by 15