./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_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 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 22:06:23,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:06:23,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:06:23,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:06:23,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:06:23,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:06:23,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:06:23,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:06:23,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:06:23,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:06:23,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:06:23,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:06:23,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:06:23,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:06:23,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:06:23,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:06:23,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:06:23,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:06:23,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:06:23,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:06:23,844 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:06:23,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:06:23,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:06:23,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:06:23,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:06:23,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:06:23,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:06:23,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:06:23,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:06:23,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:06:23,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:06:23,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:06:23,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:06:23,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:06:23,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:06:23,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:06:23,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:06:23,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:06:23,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:06:23,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:06:23,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:06:23,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:06:23,862 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 22:06:23,886 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:06:23,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:06:23,887 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:06:23,887 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:06:23,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:06:23,888 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:06:23,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:06:23,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:06:23,888 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:06:23,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:06:23,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 22:06:23,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:06:23,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:06:23,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:06:23,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:06:23,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:06:23,890 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:06:23,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:06:23,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:06:23,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:06:23,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:06:23,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:06:23,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:06:23,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:06:23,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:06:23,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 22:06:23,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 22:06:23,892 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:06:23,892 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:06:23,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:06:23,892 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b [2022-07-22 22:06:24,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:06:24,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:06:24,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:06:24,085 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:06:24,086 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:06:24,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2022-07-22 22:06:24,142 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11c13af33/e19c78a76a234188ba8f610ead3c8638/FLAG53a5ed58b [2022-07-22 22:06:24,807 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:06:24,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2022-07-22 22:06:24,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11c13af33/e19c78a76a234188ba8f610ead3c8638/FLAG53a5ed58b [2022-07-22 22:06:25,108 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11c13af33/e19c78a76a234188ba8f610ead3c8638 [2022-07-22 22:06:25,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:06:25,111 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:06:25,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:06:25,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:06:25,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:06:25,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:06:25" (1/1) ... [2022-07-22 22:06:25,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605b728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:06:25, skipping insertion in model container [2022-07-22 22:06:25,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:06:25" (1/1) ... [2022-07-22 22:06:25,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:06:25,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:06:25,416 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4497,4510] [2022-07-22 22:06:25,421 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4557,4570] [2022-07-22 22:06:25,842 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:06:25,895 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:25,895 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:25,896 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:25,897 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:25,898 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:25,907 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:25,907 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:25,908 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:25,908 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:25,909 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:25,910 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:25,910 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:25,910 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:26,086 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:06:26,087 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:06:26,088 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:06:26,089 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:06:26,090 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:06:26,090 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:06:26,091 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:06:26,092 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:06:26,093 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:06:26,093 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:06:26,162 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:26,165 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:26,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:06:26,260 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 22:06:26,268 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4497,4510] [2022-07-22 22:06:26,271 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4557,4570] [2022-07-22 22:06:26,304 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:06:26,321 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:26,322 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:26,322 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:26,322 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:26,323 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:26,326 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:26,326 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:26,327 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:26,327 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:26,328 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:26,328 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:26,343 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:26,343 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:26,359 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:06:26,360 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:06:26,360 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:06:26,360 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:06:26,361 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:06:26,361 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:06:26,362 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:06:26,362 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:06:26,362 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:06:26,362 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:06:26,389 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:26,391 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:06:26,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:06:26,540 INFO L208 MainTranslator]: Completed translation [2022-07-22 22:06:26,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:06:26 WrapperNode [2022-07-22 22:06:26,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 22:06:26,542 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 22:06:26,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 22:06:26,542 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 22:06:26,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:06:26" (1/1) ... [2022-07-22 22:06:26,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:06:26" (1/1) ... [2022-07-22 22:06:26,685 INFO L137 Inliner]: procedures = 691, calls = 1700, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 616 [2022-07-22 22:06:26,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 22:06:26,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 22:06:26,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 22:06:26,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 22:06:26,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:06:26" (1/1) ... [2022-07-22 22:06:26,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:06:26" (1/1) ... [2022-07-22 22:06:26,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:06:26" (1/1) ... [2022-07-22 22:06:26,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:06:26" (1/1) ... [2022-07-22 22:06:26,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:06:26" (1/1) ... [2022-07-22 22:06:26,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:06:26" (1/1) ... [2022-07-22 22:06:26,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:06:26" (1/1) ... [2022-07-22 22:06:26,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 22:06:26,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 22:06:26,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 22:06:26,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 22:06:26,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:06:26" (1/1) ... [2022-07-22 22:06:26,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:06:26,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:06:26,794 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) [2022-07-22 22:06:26,810 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 [2022-07-22 22:06:26,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 22:06:26,832 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-22 22:06:26,832 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-22 22:06:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-22 22:06:26,833 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-22 22:06:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-22 22:06:26,833 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-22 22:06:26,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 22:06:26,834 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-22 22:06:26,834 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-22 22:06:26,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 22:06:26,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 22:06:26,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 22:06:26,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 22:06:26,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 22:06:26,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 22:06:26,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 22:06:26,835 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-22 22:06:26,835 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-22 22:06:26,835 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-22 22:06:26,835 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-22 22:06:26,835 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-22 22:06:26,836 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-22 22:06:26,836 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-07-22 22:06:26,836 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-07-22 22:06:26,836 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 22:06:26,836 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 22:06:26,837 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2022-07-22 22:06:26,837 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2022-07-22 22:06:26,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 22:06:26,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 22:06:26,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 22:06:26,837 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-22 22:06:26,837 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-22 22:06:26,837 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-22 22:06:26,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-22 22:06:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 22:06:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-07-22 22:06:26,838 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-07-22 22:06:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-07-22 22:06:26,838 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-07-22 22:06:26,838 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-22 22:06:26,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-22 22:06:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 22:06:27,062 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 22:06:27,063 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 22:06:27,650 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 22:06:27,658 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 22:06:27,658 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 22:06:27,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:06:27 BoogieIcfgContainer [2022-07-22 22:06:27,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 22:06:27,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 22:06:27,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 22:06:27,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 22:06:27,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:06:25" (1/3) ... [2022-07-22 22:06:27,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6428cbde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:06:27, skipping insertion in model container [2022-07-22 22:06:27,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:06:26" (2/3) ... [2022-07-22 22:06:27,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6428cbde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:06:27, skipping insertion in model container [2022-07-22 22:06:27,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:06:27" (3/3) ... [2022-07-22 22:06:27,667 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_back_harness.i [2022-07-22 22:06:27,676 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 22:06:27,676 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 22:06:27,708 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 22:06:27,712 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@47ec1173, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5f0e0f55 [2022-07-22 22:06:27,712 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 22:06:27,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 169 states, 103 states have (on average 1.203883495145631) internal successors, (124), 104 states have internal predecessors, (124), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-07-22 22:06:27,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-22 22:06:27,722 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:06:27,723 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:06:27,723 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:06:27,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:06:27,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1276829709, now seen corresponding path program 1 times [2022-07-22 22:06:27,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:06:27,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449231342] [2022-07-22 22:06:27,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:06:27,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:06:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:28,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:06:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:28,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:06:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:28,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:06:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:28,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:06:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:28,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:06:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:28,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 22:06:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:28,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 22:06:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:28,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:06:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:28,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:06:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:28,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 22:06:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:28,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 22:06:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:28,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:06:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:28,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 22:06:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:28,278 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-22 22:06:28,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:06:28,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449231342] [2022-07-22 22:06:28,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449231342] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:06:28,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:06:28,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 22:06:28,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357865492] [2022-07-22 22:06:28,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:06:28,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:06:28,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:06:28,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:06:28,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:06:28,310 INFO L87 Difference]: Start difference. First operand has 169 states, 103 states have (on average 1.203883495145631) internal successors, (124), 104 states have internal predecessors, (124), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 22:06:28,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:06:28,761 INFO L93 Difference]: Finished difference Result 364 states and 532 transitions. [2022-07-22 22:06:28,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 22:06:28,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 84 [2022-07-22 22:06:28,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:06:28,775 INFO L225 Difference]: With dead ends: 364 [2022-07-22 22:06:28,775 INFO L226 Difference]: Without dead ends: 197 [2022-07-22 22:06:28,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:06:28,785 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 111 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:06:28,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 243 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 22:06:28,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-07-22 22:06:28,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 164. [2022-07-22 22:06:28,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 100 states have internal predecessors, (117), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-07-22 22:06:28,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 212 transitions. [2022-07-22 22:06:28,838 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 212 transitions. Word has length 84 [2022-07-22 22:06:28,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:06:28,838 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 212 transitions. [2022-07-22 22:06:28,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 22:06:28,839 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 212 transitions. [2022-07-22 22:06:28,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-22 22:06:28,841 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:06:28,841 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:06:28,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 22:06:28,842 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:06:28,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:06:28,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1354789231, now seen corresponding path program 1 times [2022-07-22 22:06:28,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:06:28,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965756941] [2022-07-22 22:06:28,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:06:28,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:06:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:28,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:06:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:28,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:06:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:28,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:06:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:28,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:06:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:28,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:06:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:29,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 22:06:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:29,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 22:06:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:29,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:06:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:29,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:06:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:29,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 22:06:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:29,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 22:06:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:29,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:06:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:29,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 22:06:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:29,093 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-22 22:06:29,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:06:29,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965756941] [2022-07-22 22:06:29,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965756941] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:06:29,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988897429] [2022-07-22 22:06:29,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:06:29,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:06:29,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:06:29,096 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) [2022-07-22 22:06:29,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 22:06:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:29,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 22:06:29,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:06:29,510 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-22 22:06:29,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:06:29,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988897429] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:06:29,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:06:29,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-07-22 22:06:29,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040838231] [2022-07-22 22:06:29,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:06:29,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:06:29,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:06:29,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:06:29,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:06:29,513 INFO L87 Difference]: Start difference. First operand 164 states and 212 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 22:06:29,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:06:29,666 INFO L93 Difference]: Finished difference Result 293 states and 387 transitions. [2022-07-22 22:06:29,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:06:29,666 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 84 [2022-07-22 22:06:29,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:06:29,668 INFO L225 Difference]: With dead ends: 293 [2022-07-22 22:06:29,668 INFO L226 Difference]: Without dead ends: 166 [2022-07-22 22:06:29,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-22 22:06:29,670 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 223 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:06:29,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 628 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:06:29,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-07-22 22:06:29,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-07-22 22:06:29,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 100 states have (on average 1.18) internal successors, (118), 102 states have internal predecessors, (118), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (52), 47 states have call predecessors, (52), 47 states have call successors, (52) [2022-07-22 22:06:29,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 218 transitions. [2022-07-22 22:06:29,682 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 218 transitions. Word has length 84 [2022-07-22 22:06:29,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:06:29,683 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 218 transitions. [2022-07-22 22:06:29,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 22:06:29,683 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 218 transitions. [2022-07-22 22:06:29,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-22 22:06:29,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:06:29,685 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:06:29,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 22:06:29,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:06:29,904 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:06:29,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:06:29,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1275658481, now seen corresponding path program 1 times [2022-07-22 22:06:29,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:06:29,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464736377] [2022-07-22 22:06:29,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:06:29,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:06:29,951 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:06:29,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1160505924] [2022-07-22 22:06:29,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:06:29,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:06:29,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:06:29,979 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:06:30,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 22:06:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:30,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 2272 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 22:06:30,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:06:30,407 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-22 22:06:30,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:06:30,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:06:30,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464736377] [2022-07-22 22:06:30,408 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:06:30,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160505924] [2022-07-22 22:06:30,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160505924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:06:30,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:06:30,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 22:06:30,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623794610] [2022-07-22 22:06:30,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:06:30,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:06:30,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:06:30,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:06:30,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:06:30,412 INFO L87 Difference]: Start difference. First operand 166 states and 218 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-22 22:06:30,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:06:30,651 INFO L93 Difference]: Finished difference Result 285 states and 376 transitions. [2022-07-22 22:06:30,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:06:30,652 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 99 [2022-07-22 22:06:30,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:06:30,653 INFO L225 Difference]: With dead ends: 285 [2022-07-22 22:06:30,653 INFO L226 Difference]: Without dead ends: 166 [2022-07-22 22:06:30,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:06:30,654 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 229 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:06:30,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 849 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:06:30,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-07-22 22:06:30,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-07-22 22:06:30,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 100 states have (on average 1.18) internal successors, (118), 102 states have internal predecessors, (118), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2022-07-22 22:06:30,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 215 transitions. [2022-07-22 22:06:30,665 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 215 transitions. Word has length 99 [2022-07-22 22:06:30,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:06:30,666 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 215 transitions. [2022-07-22 22:06:30,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-22 22:06:30,666 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 215 transitions. [2022-07-22 22:06:30,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 22:06:30,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:06:30,668 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:06:30,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 22:06:30,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-22 22:06:30,888 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:06:30,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:06:30,889 INFO L85 PathProgramCache]: Analyzing trace with hash -170213077, now seen corresponding path program 2 times [2022-07-22 22:06:30,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:06:30,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410611200] [2022-07-22 22:06:30,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:06:30,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:06:30,931 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:06:30,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1528117168] [2022-07-22 22:06:30,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:06:30,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:06:30,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:06:30,948 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:06:30,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 22:06:31,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:06:31,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:06:31,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 22:06:31,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:06:31,483 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-22 22:06:31,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:06:31,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:06:31,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410611200] [2022-07-22 22:06:31,484 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:06:31,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528117168] [2022-07-22 22:06:31,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528117168] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:06:31,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:06:31,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 22:06:31,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561653970] [2022-07-22 22:06:31,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:06:31,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 22:06:31,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:06:31,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 22:06:31,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 22:06:31,486 INFO L87 Difference]: Start difference. First operand 166 states and 215 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-22 22:06:31,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:06:31,958 INFO L93 Difference]: Finished difference Result 282 states and 368 transitions. [2022-07-22 22:06:31,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:06:31,959 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 114 [2022-07-22 22:06:31,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:06:31,960 INFO L225 Difference]: With dead ends: 282 [2022-07-22 22:06:31,960 INFO L226 Difference]: Without dead ends: 164 [2022-07-22 22:06:31,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-07-22 22:06:31,961 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 231 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:06:31,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 1077 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 22:06:31,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-07-22 22:06:31,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-07-22 22:06:31,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 99 states have (on average 1.1717171717171717) internal successors, (116), 100 states have internal predecessors, (116), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-07-22 22:06:31,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 211 transitions. [2022-07-22 22:06:31,971 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 211 transitions. Word has length 114 [2022-07-22 22:06:31,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:06:31,972 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 211 transitions. [2022-07-22 22:06:31,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-22 22:06:31,972 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 211 transitions. [2022-07-22 22:06:31,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-22 22:06:31,973 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:06:31,973 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:06:32,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 22:06:32,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:06:32,188 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:06:32,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:06:32,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1405660739, now seen corresponding path program 1 times [2022-07-22 22:06:32,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:06:32,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137040059] [2022-07-22 22:06:32,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:06:32,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:06:32,266 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:06:32,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [650037921] [2022-07-22 22:06:32,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:06:32,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:06:32,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:06:32,284 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:06:32,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 22:06:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:06:32,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 277 conjunts are in the unsatisfiable core [2022-07-22 22:06:32,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:06:32,884 INFO L390 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 [2022-07-22 22:06:33,075 INFO L390 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 6 treesize of output 5 [2022-07-22 22:06:33,194 INFO L356 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2022-07-22 22:06:33,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 53 [2022-07-22 22:06:33,251 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-22 22:06:33,251 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-07-22 22:06:33,661 INFO L356 Elim1Store]: treesize reduction 91, result has 30.0 percent of original size [2022-07-22 22:06:33,661 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 9 case distinctions, treesize of input 46 treesize of output 69 [2022-07-22 22:06:33,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-07-22 22:06:58,013 WARN L233 SmtUtils]: Spent 13.05s on a formula simplification. DAG size of input: 55 DAG size of output: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:06:58,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:06:58,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:06:58,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:06:58,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 222 [2022-07-22 22:06:58,291 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:06:58,291 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 232 treesize of output 294 [2022-07-22 22:07:15,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:07:15,475 INFO L356 Elim1Store]: treesize reduction 92, result has 25.2 percent of original size [2022-07-22 22:07:15,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 403 treesize of output 370 [2022-07-22 22:07:15,548 INFO L390 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 15 treesize of output 13 [2022-07-22 22:07:15,563 INFO L390 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 15 treesize of output 13 [2022-07-22 22:07:15,572 INFO L390 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 15 treesize of output 13 [2022-07-22 22:07:15,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:07:15,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:07:15,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:07:15,652 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 73 [2022-07-22 22:07:16,527 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-22 22:07:16,528 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 51 [2022-07-22 22:07:16,533 INFO L390 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 19 treesize of output 17 [2022-07-22 22:07:17,792 INFO L356 Elim1Store]: treesize reduction 57, result has 24.0 percent of original size [2022-07-22 22:07:17,793 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 135 treesize of output 135 [2022-07-22 22:07:17,812 INFO L390 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 17 treesize of output 15 [2022-07-22 22:07:18,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:07:18,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:07:18,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:07:18,031 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 58 [2022-07-22 22:07:18,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:07:18,531 INFO L356 Elim1Store]: treesize reduction 92, result has 25.2 percent of original size [2022-07-22 22:07:18,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 403 treesize of output 370 [2022-07-22 22:07:18,657 INFO L390 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 15 treesize of output 13 [2022-07-22 22:07:18,673 INFO L390 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 15 treesize of output 13 [2022-07-22 22:07:18,688 INFO L390 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 15 treesize of output 13 [2022-07-22 22:07:18,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:07:18,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:07:18,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:07:18,815 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 73 [2022-07-22 22:07:20,722 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-22 22:07:20,723 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 51 [2022-07-22 22:07:20,727 INFO L390 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 19 treesize of output 17 [2022-07-22 22:07:22,764 INFO L356 Elim1Store]: treesize reduction 75, result has 19.4 percent of original size [2022-07-22 22:07:22,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 135 treesize of output 135 [2022-07-22 22:07:22,824 INFO L356 Elim1Store]: treesize reduction 90, result has 16.7 percent of original size [2022-07-22 22:07:22,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 84 treesize of output 92 [2022-07-22 22:07:22,838 INFO L390 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 17 treesize of output 15 [2022-07-22 22:07:22,859 INFO L390 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 17 treesize of output 15 [2022-07-22 22:07:22,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:07:22,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:07:22,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:07:22,876 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 32 [2022-07-22 22:07:22,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:07:22,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:07:22,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:07:22,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 45 [2022-07-22 22:07:23,015 INFO L356 Elim1Store]: treesize reduction 101, result has 15.1 percent of original size [2022-07-22 22:07:23,015 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 173 treesize of output 169 [2022-07-22 22:07:23,025 INFO L390 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 23 treesize of output 21 [2022-07-22 22:07:23,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:07:23,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:07:23,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:07:23,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 97 [2022-07-22 22:07:23,834 INFO L356 Elim1Store]: treesize reduction 79, result has 18.6 percent of original size [2022-07-22 22:07:23,834 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 152 treesize of output 150 [2022-07-22 22:07:23,848 INFO L390 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 23 treesize of output 21 [2022-07-22 22:07:24,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:07:24,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:07:24,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:07:24,032 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 82 [2022-07-22 22:07:55,105 WARN L233 SmtUtils]: Spent 9.59s on a formula simplification. DAG size of input: 425 DAG size of output: 125 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:08:46,608 WARN L233 SmtUtils]: Spent 8.42s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:08:53,177 INFO L356 Elim1Store]: treesize reduction 72, result has 28.7 percent of original size [2022-07-22 22:08:53,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 238 treesize of output 364 [2022-07-22 22:08:53,694 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 50 proven. 102 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 22:08:53,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:09:07,072 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_13| Int)) (let ((.cse2 (+ c_aws_array_list_length_~list.offset 24))) (let ((.cse0 (let ((.cse3 (select |c_#memory_int| c_aws_array_list_length_~list.base))) (* (select .cse3 (+ c_aws_array_list_length_~list.offset 16)) (select .cse3 .cse2))))) (let ((.cse1 (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_13| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_13|) 0 .cse0)) c_aws_array_list_length_~list.base))) (or (not (<= (mod .cse0 18446744073709551616) (mod (select .cse1 (+ c_aws_array_list_length_~list.offset 8)) 18446744073709551616))) (not (= (mod (select .cse1 .cse2) 18446744073709551616) 0))))))) (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_13| Int)) (let ((.cse4 (let ((.cse5 (select |c_#memory_int| c_aws_array_list_length_~list.base))) (* (select .cse5 (+ c_aws_array_list_length_~list.offset 16)) (select .cse5 (+ c_aws_array_list_length_~list.offset 24)))))) (<= (mod .cse4 18446744073709551616) (mod (select (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_13| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_13|) 0 .cse4)) c_aws_array_list_length_~list.base) (+ c_aws_array_list_length_~list.offset 8)) 18446744073709551616))))) is different from false [2022-07-22 22:09:07,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:07,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137040059] [2022-07-22 22:09:07,076 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:09:07,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650037921] [2022-07-22 22:09:07,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650037921] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:07,076 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:09:07,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2022-07-22 22:09:07,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141393293] [2022-07-22 22:09:07,077 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:09:07,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-22 22:09:07,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:07,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-22 22:09:07,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2550, Unknown=41, NotChecked=102, Total=2862 [2022-07-22 22:09:07,079 INFO L87 Difference]: Start difference. First operand 164 states and 211 transitions. Second operand has 50 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 39 states have internal predecessors, (86), 15 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) [2022-07-22 22:09:22,921 WARN L233 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 79 DAG size of output: 72 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:09:32,569 WARN L233 SmtUtils]: Spent 6.91s on a formula simplification. DAG size of input: 73 DAG size of output: 66 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:09:40,872 WARN L233 SmtUtils]: Spent 6.77s on a formula simplification. DAG size of input: 74 DAG size of output: 67 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:10:19,746 WARN L233 SmtUtils]: Spent 34.93s on a formula simplification. DAG size of input: 81 DAG size of output: 73 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:10:21,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:10:21,843 INFO L93 Difference]: Finished difference Result 254 states and 329 transitions. [2022-07-22 22:10:21,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-07-22 22:10:21,846 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 39 states have internal predecessors, (86), 15 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) Word has length 144 [2022-07-22 22:10:21,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:10:21,848 INFO L225 Difference]: With dead ends: 254 [2022-07-22 22:10:21,848 INFO L226 Difference]: Without dead ends: 252 [2022-07-22 22:10:21,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 88 SyntacticMatches, 10 SemanticMatches, 73 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1618 ImplicationChecksByTransitivity, 158.8s TimeCoverageRelationStatistics Valid=329, Invalid=5013, Unknown=64, NotChecked=144, Total=5550 [2022-07-22 22:10:21,852 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 130 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 2204 SdHoareTripleChecker+Invalid, 3501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2213 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:10:21,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 2204 Invalid, 3501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1181 Invalid, 0 Unknown, 2213 Unchecked, 1.0s Time] [2022-07-22 22:10:21,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-07-22 22:10:21,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 239. [2022-07-22 22:10:21,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 148 states have (on average 1.1689189189189189) internal successors, (173), 151 states have internal predecessors, (173), 64 states have call successors, (64), 26 states have call predecessors, (64), 26 states have return successors, (75), 61 states have call predecessors, (75), 63 states have call successors, (75) [2022-07-22 22:10:21,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 312 transitions. [2022-07-22 22:10:21,874 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 312 transitions. Word has length 144 [2022-07-22 22:10:21,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:10:21,874 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 312 transitions. [2022-07-22 22:10:21,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 42 states have (on average 2.0476190476190474) internal successors, (86), 39 states have internal predecessors, (86), 15 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) [2022-07-22 22:10:21,875 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 312 transitions. [2022-07-22 22:10:21,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-22 22:10:21,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:10:21,876 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:10:21,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 22:10:22,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:10:22,099 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:10:22,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:10:22,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1456570214, now seen corresponding path program 1 times [2022-07-22 22:10:22,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:10:22,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999078834] [2022-07-22 22:10:22,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:10:22,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:10:22,157 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:10:22,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1647196334] [2022-07-22 22:10:22,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:10:22,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:10:22,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:10:22,159 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:10:22,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 22:10:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:22,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-22 22:10:22,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:10:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-22 22:10:22,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:10:22,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:10:22,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999078834] [2022-07-22 22:10:22,677 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:10:22,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647196334] [2022-07-22 22:10:22,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647196334] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:10:22,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:10:22,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 22:10:22,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215038378] [2022-07-22 22:10:22,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:10:22,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 22:10:22,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:10:22,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 22:10:22,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:10:22,679 INFO L87 Difference]: Start difference. First operand 239 states and 312 transitions. Second operand has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 4 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-22 22:10:22,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:10:22,930 INFO L93 Difference]: Finished difference Result 392 states and 524 transitions. [2022-07-22 22:10:22,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 22:10:22,931 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 4 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 150 [2022-07-22 22:10:22,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:10:22,933 INFO L225 Difference]: With dead ends: 392 [2022-07-22 22:10:22,933 INFO L226 Difference]: Without dead ends: 256 [2022-07-22 22:10:22,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:10:22,934 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 12 mSDsluCounter, 2290 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2506 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:10:22,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2506 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:10:22,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-07-22 22:10:22,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 251. [2022-07-22 22:10:22,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 158 states have (on average 1.1772151898734178) internal successors, (186), 162 states have internal predecessors, (186), 64 states have call successors, (64), 26 states have call predecessors, (64), 28 states have return successors, (85), 62 states have call predecessors, (85), 63 states have call successors, (85) [2022-07-22 22:10:22,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 335 transitions. [2022-07-22 22:10:22,949 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 335 transitions. Word has length 150 [2022-07-22 22:10:22,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:10:22,949 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 335 transitions. [2022-07-22 22:10:22,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 4 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-22 22:10:22,949 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 335 transitions. [2022-07-22 22:10:22,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-22 22:10:22,951 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:10:22,951 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:10:22,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 22:10:23,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:10:23,168 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:10:23,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:10:23,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1921955903, now seen corresponding path program 1 times [2022-07-22 22:10:23,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:10:23,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119770203] [2022-07-22 22:10:23,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:10:23,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:10:23,212 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:10:23,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76525672] [2022-07-22 22:10:23,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:10:23,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:10:23,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:10:23,214 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:10:23,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 22:10:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:23,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:10:23,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:10:23,637 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-22 22:10:23,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:10:23,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:10:23,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119770203] [2022-07-22 22:10:23,638 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:10:23,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76525672] [2022-07-22 22:10:23,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76525672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:10:23,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:10:23,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 22:10:23,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234890034] [2022-07-22 22:10:23,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:10:23,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:10:23,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:10:23,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:10:23,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:10:23,640 INFO L87 Difference]: Start difference. First operand 251 states and 335 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 22:10:23,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:10:23,670 INFO L93 Difference]: Finished difference Result 421 states and 588 transitions. [2022-07-22 22:10:23,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:10:23,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2022-07-22 22:10:23,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:10:23,672 INFO L225 Difference]: With dead ends: 421 [2022-07-22 22:10:23,672 INFO L226 Difference]: Without dead ends: 261 [2022-07-22 22:10:23,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:10:23,674 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 7 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:10:23,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 625 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:10:23,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-07-22 22:10:23,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 255. [2022-07-22 22:10:23,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 162 states have (on average 1.1728395061728396) internal successors, (190), 166 states have internal predecessors, (190), 64 states have call successors, (64), 26 states have call predecessors, (64), 28 states have return successors, (85), 62 states have call predecessors, (85), 63 states have call successors, (85) [2022-07-22 22:10:23,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 339 transitions. [2022-07-22 22:10:23,691 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 339 transitions. Word has length 144 [2022-07-22 22:10:23,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:10:23,691 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 339 transitions. [2022-07-22 22:10:23,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 22:10:23,691 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 339 transitions. [2022-07-22 22:10:23,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 22:10:23,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:10:23,693 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:10:23,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 22:10:23,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:10:23,907 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:10:23,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:10:23,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1304087383, now seen corresponding path program 1 times [2022-07-22 22:10:23,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:10:23,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392747281] [2022-07-22 22:10:23,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:10:23,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:10:23,966 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:10:23,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [226528047] [2022-07-22 22:10:23,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:10:23,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:10:23,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:10:23,967 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:10:23,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 22:10:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:24,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 123 conjunts are in the unsatisfiable core [2022-07-22 22:10:24,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:10:24,574 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_738 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_738))) is different from true [2022-07-22 22:10:24,758 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:10:24,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-22 22:10:24,764 INFO L390 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 7 treesize of output 3 [2022-07-22 22:10:25,034 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_740 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_740))) (exists ((v_ArrVal_739 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_739) |c_#memory_$Pointer$.offset|)))) is different from true [2022-07-22 22:10:25,329 INFO L356 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-07-22 22:10:25,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2022-07-22 22:10:25,332 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2022-07-22 22:10:43,602 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_741 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_743 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_743))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_741))))) is different from true