./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_push_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 1c506089032d4cdff4e7555a7f0fed6846d5bd185846ae9cd372b1dcc3fd0c8a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:13:09,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:13:09,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:13:09,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:13:09,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:13:09,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:13:09,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:13:09,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:13:09,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:13:09,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:13:09,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:13:09,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:13:09,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:13:09,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:13:09,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:13:09,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:13:09,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:13:09,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:13:09,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:13:09,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:13:09,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:13:09,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:13:09,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:13:09,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:13:09,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:13:09,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:13:09,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:13:09,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:13:09,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:13:09,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:13:09,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:13:09,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:13:09,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:13:09,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:13:09,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:13:09,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:13:09,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:13:09,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:13:09,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:13:09,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:13:09,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:13:09,908 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:13:09,930 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:13:09,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:13:09,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:13:09,931 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:13:09,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:13:09,932 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:13:09,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:13:09,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:13:09,933 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:13:09,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:13:09,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:13:09,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:13:09,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:13:09,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:13:09,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:13:09,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:13:09,935 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:13:09,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:13:09,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:13:09,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:13:09,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:13:09,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:13:09,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:13:09,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:13:09,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:13:09,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:13:09,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:13:09,936 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:13:09,936 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:13:09,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:13:09,937 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c506089032d4cdff4e7555a7f0fed6846d5bd185846ae9cd372b1dcc3fd0c8a [2021-12-28 03:13:10,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:13:10,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:13:10,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:13:10,209 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:13:10,210 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:13:10,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i [2021-12-28 03:13:10,260 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e0dfd329/b3bf9ceedee54e7a8ee98a52e5547c16/FLAG7d36ea8fd [2021-12-28 03:13:10,760 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:13:10,760 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i [2021-12-28 03:13:10,785 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e0dfd329/b3bf9ceedee54e7a8ee98a52e5547c16/FLAG7d36ea8fd [2021-12-28 03:13:11,003 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e0dfd329/b3bf9ceedee54e7a8ee98a52e5547c16 [2021-12-28 03:13:11,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:13:11,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:13:11,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:13:11,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:13:11,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:13:11,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:13:11" (1/1) ... [2021-12-28 03:13:11,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf02af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:13:11, skipping insertion in model container [2021-12-28 03:13:11,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:13:11" (1/1) ... [2021-12-28 03:13:11,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:13:11,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:13:11,310 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_push_back_harness.i[4498,4511] [2021-12-28 03:13:11,315 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_push_back_harness.i[4558,4571] [2021-12-28 03:13:11,794 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:13:11,844 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:11,845 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:11,845 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:11,845 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:11,846 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:11,852 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:11,853 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:11,853 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:11,854 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:11,855 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:11,855 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:11,856 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:11,856 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:12,044 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:13:12,045 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:13:12,045 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:13:12,046 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:13:12,047 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:13:12,047 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:13:12,047 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:13:12,048 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:13:12,048 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:13:12,049 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:13:12,119 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:12,122 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:12,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:13:12,206 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:13:12,224 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_push_back_harness.i[4498,4511] [2021-12-28 03:13:12,225 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_push_back_harness.i[4558,4571] [2021-12-28 03:13:12,256 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:13:12,264 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:12,264 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:12,265 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:12,266 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:12,266 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:12,269 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:12,272 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:12,273 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:12,274 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:12,274 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:12,274 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:12,275 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:12,275 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:12,292 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:13:12,292 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:13:12,293 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:13:12,293 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:13:12,294 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:13:12,294 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:13:12,294 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:13:12,295 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:13:12,295 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:13:12,295 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:13:12,310 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:12,316 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:13:12,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:13:12,491 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:13:12,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:13:12 WrapperNode [2021-12-28 03:13:12,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:13:12,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:13:12,493 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:13:12,493 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:13:12,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:13:12" (1/1) ... [2021-12-28 03:13:12,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:13:12" (1/1) ... [2021-12-28 03:13:12,652 INFO L137 Inliner]: procedures = 691, calls = 1681, calls flagged for inlining = 53, calls inlined = 14, statements flattened = 895 [2021-12-28 03:13:12,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:13:12,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:13:12,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:13:12,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:13:12,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:13:12" (1/1) ... [2021-12-28 03:13:12,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:13:12" (1/1) ... [2021-12-28 03:13:12,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:13:12" (1/1) ... [2021-12-28 03:13:12,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:13:12" (1/1) ... [2021-12-28 03:13:12,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:13:12" (1/1) ... [2021-12-28 03:13:12,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:13:12" (1/1) ... [2021-12-28 03:13:12,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:13:12" (1/1) ... [2021-12-28 03:13:12,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:13:12,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:13:12,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:13:12,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:13:12,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:13:12" (1/1) ... [2021-12-28 03:13:12,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:13:12,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:13:12,764 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 03:13:12,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 03:13:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:13:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-28 03:13:12,791 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-28 03:13:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-28 03:13:12,791 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-28 03:13:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-28 03:13:12,792 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-28 03:13:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-12-28 03:13:12,792 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-12-28 03:13:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:13:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-28 03:13:12,793 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-28 03:13:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 03:13:12,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 03:13:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:13:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:13:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:13:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-28 03:13:12,794 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-28 03:13:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:13:12,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:13:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-28 03:13:12,794 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-28 03:13:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-28 03:13:12,795 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-28 03:13:12,795 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-28 03:13:12,795 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-28 03:13:12,795 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-28 03:13:12,795 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-28 03:13:12,796 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-12-28 03:13:12,796 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-12-28 03:13:12,796 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-28 03:13:12,796 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-28 03:13:12,796 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:13:12,796 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:13:12,796 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-28 03:13:12,796 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-28 03:13:12,797 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-12-28 03:13:12,797 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-12-28 03:13:12,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:13:12,797 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-28 03:13:12,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-28 03:13:12,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:13:12,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:13:12,797 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-28 03:13:12,798 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-28 03:13:12,798 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-28 03:13:12,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-28 03:13:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-28 03:13:12,799 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-28 03:13:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:13:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-28 03:13:12,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-28 03:13:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:13:13,012 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:13:13,014 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:13:13,715 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:13:13,720 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:13:13,721 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 03:13:13,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:13:13 BoogieIcfgContainer [2021-12-28 03:13:13,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:13:13,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:13:13,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:13:13,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:13:13,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:13:11" (1/3) ... [2021-12-28 03:13:13,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d8a15d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:13:13, skipping insertion in model container [2021-12-28 03:13:13,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:13:12" (2/3) ... [2021-12-28 03:13:13,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d8a15d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:13:13, skipping insertion in model container [2021-12-28 03:13:13,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:13:13" (3/3) ... [2021-12-28 03:13:13,727 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_push_back_harness.i [2021-12-28 03:13:13,730 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:13:13,730 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:13:13,758 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:13:13,762 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 03:13:13,762 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:13:13,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 174 states have (on average 1.2241379310344827) internal successors, (213), 175 states have internal predecessors, (213), 101 states have call successors, (101), 21 states have call predecessors, (101), 21 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) [2021-12-28 03:13:13,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-28 03:13:13,781 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:13:13,782 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:13:13,782 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:13:13,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:13:13,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1091930304, now seen corresponding path program 1 times [2021-12-28 03:13:13,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:13:13,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653029201] [2021-12-28 03:13:13,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:13,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:13:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:14,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:13:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:14,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:13:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:14,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:13:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:14,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:13:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:14,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:13:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:14,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 03:13:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:14,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:13:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:14,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:13:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:14,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 03:13:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:14,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 03:13:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:14,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:13:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:14,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:13:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:14,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 03:13:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:14,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:13:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:14,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 03:13:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:14,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:13:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:14,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 03:13:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:14,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 03:13:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:14,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 03:13:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:14,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 03:13:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:14,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 03:13:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:14,357 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-12-28 03:13:14,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:13:14,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653029201] [2021-12-28 03:13:14,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653029201] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:13:14,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:13:14,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:13:14,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189106607] [2021-12-28 03:13:14,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:13:14,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:13:14,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:13:14,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:13:14,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:13:14,381 INFO L87 Difference]: Start difference. First operand has 298 states, 174 states have (on average 1.2241379310344827) internal successors, (213), 175 states have internal predecessors, (213), 101 states have call successors, (101), 21 states have call predecessors, (101), 21 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:13:14,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:13:14,852 INFO L93 Difference]: Finished difference Result 615 states and 939 transitions. [2021-12-28 03:13:14,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:13:14,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 130 [2021-12-28 03:13:14,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:13:14,862 INFO L225 Difference]: With dead ends: 615 [2021-12-28 03:13:14,862 INFO L226 Difference]: Without dead ends: 319 [2021-12-28 03:13:14,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:13:14,868 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 205 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:13:14,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 521 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 03:13:14,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-12-28 03:13:14,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 293. [2021-12-28 03:13:14,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 170 states have (on average 1.2176470588235293) internal successors, (207), 171 states have internal predecessors, (207), 101 states have call successors, (101), 21 states have call predecessors, (101), 21 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2021-12-28 03:13:14,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 408 transitions. [2021-12-28 03:13:14,921 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 408 transitions. Word has length 130 [2021-12-28 03:13:14,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:13:14,921 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 408 transitions. [2021-12-28 03:13:14,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-28 03:13:14,922 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 408 transitions. [2021-12-28 03:13:14,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-28 03:13:14,930 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:13:14,930 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:13:14,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:13:14,931 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:13:14,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:13:14,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1112170678, now seen corresponding path program 1 times [2021-12-28 03:13:14,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:13:14,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688177252] [2021-12-28 03:13:14,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:14,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:13:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:15,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:13:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:15,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:13:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:15,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:13:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:15,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:13:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:15,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:13:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:15,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 03:13:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:15,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:13:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:15,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:13:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:15,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 03:13:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:15,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 03:13:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:15,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:13:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:15,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 03:13:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:15,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 03:13:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:15,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:13:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:15,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 03:13:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:15,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 03:13:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:15,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 03:13:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:15,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 03:13:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:15,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 03:13:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:15,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 03:13:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:15,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 03:13:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:15,274 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-12-28 03:13:15,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:13:15,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688177252] [2021-12-28 03:13:15,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688177252] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:13:15,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440492537] [2021-12-28 03:13:15,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:15,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:15,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:13:15,277 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:13:15,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:13:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:15,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 03:13:15,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:13:15,834 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-12-28 03:13:15,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:13:15,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440492537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:13:15,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:13:15,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-12-28 03:13:15,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894198722] [2021-12-28 03:13:15,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:13:15,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:13:15,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:13:15,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:13:15,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:13:15,837 INFO L87 Difference]: Start difference. First operand 293 states and 408 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-28 03:13:16,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:13:16,256 INFO L93 Difference]: Finished difference Result 562 states and 803 transitions. [2021-12-28 03:13:16,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:13:16,257 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 130 [2021-12-28 03:13:16,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:13:16,259 INFO L225 Difference]: With dead ends: 562 [2021-12-28 03:13:16,260 INFO L226 Difference]: Without dead ends: 295 [2021-12-28 03:13:16,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:13:16,261 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 429 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:13:16,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 1120 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 03:13:16,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-12-28 03:13:16,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2021-12-28 03:13:16,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 171 states have (on average 1.2163742690058479) internal successors, (208), 173 states have internal predecessors, (208), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (119), 100 states have call predecessors, (119), 100 states have call successors, (119) [2021-12-28 03:13:16,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 428 transitions. [2021-12-28 03:13:16,281 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 428 transitions. Word has length 130 [2021-12-28 03:13:16,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:13:16,282 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 428 transitions. [2021-12-28 03:13:16,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-28 03:13:16,282 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 428 transitions. [2021-12-28 03:13:16,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-28 03:13:16,283 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:13:16,283 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:13:16,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 03:13:16,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:16,496 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:13:16,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:13:16,496 INFO L85 PathProgramCache]: Analyzing trace with hash -130840866, now seen corresponding path program 1 times [2021-12-28 03:13:16,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:13:16,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078750717] [2021-12-28 03:13:16,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:16,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:13:16,545 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:13:16,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [540988034] [2021-12-28 03:13:16,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:16,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:16,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:13:16,547 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:13:16,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:13:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:16,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 03:13:16,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:13:17,179 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-12-28 03:13:17,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:13:17,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:13:17,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078750717] [2021-12-28 03:13:17,180 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:13:17,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540988034] [2021-12-28 03:13:17,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540988034] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:13:17,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:13:17,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:13:17,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658100048] [2021-12-28 03:13:17,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:13:17,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:13:17,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:13:17,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:13:17,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:13:17,182 INFO L87 Difference]: Start difference. First operand 295 states and 428 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-28 03:13:17,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:13:17,213 INFO L93 Difference]: Finished difference Result 569 states and 851 transitions. [2021-12-28 03:13:17,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:13:17,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 160 [2021-12-28 03:13:17,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:13:17,216 INFO L225 Difference]: With dead ends: 569 [2021-12-28 03:13:17,216 INFO L226 Difference]: Without dead ends: 300 [2021-12-28 03:13:17,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:13:17,217 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 10 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:13:17,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1211 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:13:17,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-12-28 03:13:17,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 297. [2021-12-28 03:13:17,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 173 states have (on average 1.2138728323699421) internal successors, (210), 175 states have internal predecessors, (210), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (119), 100 states have call predecessors, (119), 100 states have call successors, (119) [2021-12-28 03:13:17,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 430 transitions. [2021-12-28 03:13:17,233 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 430 transitions. Word has length 160 [2021-12-28 03:13:17,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:13:17,233 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 430 transitions. [2021-12-28 03:13:17,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-28 03:13:17,233 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 430 transitions. [2021-12-28 03:13:17,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-28 03:13:17,234 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:13:17,235 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:13:17,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 03:13:17,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-28 03:13:17,450 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:13:17,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:13:17,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1971838050, now seen corresponding path program 1 times [2021-12-28 03:13:17,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:13:17,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123528128] [2021-12-28 03:13:17,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:17,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:13:17,485 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:13:17,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [618290940] [2021-12-28 03:13:17,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:17,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:17,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:13:17,487 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:13:17,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 03:13:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:17,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 03:13:17,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:13:18,072 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-12-28 03:13:18,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:13:18,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:13:18,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123528128] [2021-12-28 03:13:18,072 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:13:18,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618290940] [2021-12-28 03:13:18,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618290940] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:13:18,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:13:18,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:13:18,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687026009] [2021-12-28 03:13:18,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:13:18,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:13:18,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:13:18,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:13:18,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:13:18,074 INFO L87 Difference]: Start difference. First operand 297 states and 430 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2021-12-28 03:13:18,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:13:18,512 INFO L93 Difference]: Finished difference Result 548 states and 792 transitions. [2021-12-28 03:13:18,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:13:18,515 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 160 [2021-12-28 03:13:18,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:13:18,517 INFO L225 Difference]: With dead ends: 548 [2021-12-28 03:13:18,518 INFO L226 Difference]: Without dead ends: 297 [2021-12-28 03:13:18,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:13:18,519 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 508 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:13:18,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 1344 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 03:13:18,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-12-28 03:13:18,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2021-12-28 03:13:18,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 173 states have (on average 1.2138728323699421) internal successors, (210), 175 states have internal predecessors, (210), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (116), 100 states have call predecessors, (116), 100 states have call successors, (116) [2021-12-28 03:13:18,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 427 transitions. [2021-12-28 03:13:18,541 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 427 transitions. Word has length 160 [2021-12-28 03:13:18,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:13:18,541 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 427 transitions. [2021-12-28 03:13:18,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2021-12-28 03:13:18,542 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 427 transitions. [2021-12-28 03:13:18,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-28 03:13:18,543 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:13:18,543 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:13:18,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 03:13:18,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:18,744 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:13:18,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:13:18,744 INFO L85 PathProgramCache]: Analyzing trace with hash -228114873, now seen corresponding path program 2 times [2021-12-28 03:13:18,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:13:18,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186378595] [2021-12-28 03:13:18,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:18,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:13:18,786 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:13:18,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888863325] [2021-12-28 03:13:18,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:13:18,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:18,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:13:18,788 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:13:18,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 03:13:19,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:13:19,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:13:19,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 2672 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 03:13:19,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:13:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2021-12-28 03:13:19,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:13:19,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:13:19,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186378595] [2021-12-28 03:13:19,539 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:13:19,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888863325] [2021-12-28 03:13:19,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888863325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:13:19,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:13:19,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 03:13:19,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926732128] [2021-12-28 03:13:19,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:13:19,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:13:19,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:13:19,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:13:19,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:13:19,541 INFO L87 Difference]: Start difference. First operand 297 states and 427 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2021-12-28 03:13:20,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:13:20,048 INFO L93 Difference]: Finished difference Result 554 states and 797 transitions. [2021-12-28 03:13:20,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:13:20,048 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 175 [2021-12-28 03:13:20,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:13:20,050 INFO L225 Difference]: With dead ends: 554 [2021-12-28 03:13:20,051 INFO L226 Difference]: Without dead ends: 309 [2021-12-28 03:13:20,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:13:20,052 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 524 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:13:20,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 1949 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 03:13:20,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-12-28 03:13:20,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2021-12-28 03:13:20,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 179 states have (on average 1.2122905027932962) internal successors, (217), 181 states have internal predecessors, (217), 106 states have call successors, (106), 22 states have call predecessors, (106), 23 states have return successors, (121), 105 states have call predecessors, (121), 105 states have call successors, (121) [2021-12-28 03:13:20,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 444 transitions. [2021-12-28 03:13:20,066 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 444 transitions. Word has length 175 [2021-12-28 03:13:20,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:13:20,066 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 444 transitions. [2021-12-28 03:13:20,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2021-12-28 03:13:20,067 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 444 transitions. [2021-12-28 03:13:20,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-12-28 03:13:20,068 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:13:20,068 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:13:20,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 03:13:20,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:20,273 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:13:20,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:13:20,273 INFO L85 PathProgramCache]: Analyzing trace with hash 2146106871, now seen corresponding path program 1 times [2021-12-28 03:13:20,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:13:20,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138164496] [2021-12-28 03:13:20,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:20,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:13:20,330 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:13:20,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [612045125] [2021-12-28 03:13:20,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:20,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:20,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:13:20,332 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:13:20,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 03:13:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:20,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-28 03:13:20,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:13:20,983 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-12-28 03:13:20,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:13:20,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:13:20,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138164496] [2021-12-28 03:13:20,984 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:13:20,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612045125] [2021-12-28 03:13:20,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612045125] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:13:20,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:13:20,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:13:20,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201891416] [2021-12-28 03:13:20,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:13:20,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:13:20,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:13:20,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:13:20,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:13:20,986 INFO L87 Difference]: Start difference. First operand 309 states and 444 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-28 03:13:21,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:13:21,165 INFO L93 Difference]: Finished difference Result 698 states and 1038 transitions. [2021-12-28 03:13:21,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:13:21,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 205 [2021-12-28 03:13:21,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:13:21,168 INFO L225 Difference]: With dead ends: 698 [2021-12-28 03:13:21,168 INFO L226 Difference]: Without dead ends: 438 [2021-12-28 03:13:21,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:13:21,170 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 173 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:13:21,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 2498 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:13:21,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-12-28 03:13:21,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 315. [2021-12-28 03:13:21,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 182 states have (on average 1.2087912087912087) internal successors, (220), 184 states have internal predecessors, (220), 109 states have call successors, (109), 22 states have call predecessors, (109), 23 states have return successors, (124), 108 states have call predecessors, (124), 108 states have call successors, (124) [2021-12-28 03:13:21,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 453 transitions. [2021-12-28 03:13:21,195 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 453 transitions. Word has length 205 [2021-12-28 03:13:21,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:13:21,196 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 453 transitions. [2021-12-28 03:13:21,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-28 03:13:21,197 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 453 transitions. [2021-12-28 03:13:21,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-12-28 03:13:21,198 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:13:21,198 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:13:21,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 03:13:21,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:21,415 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:13:21,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:13:21,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1414139445, now seen corresponding path program 1 times [2021-12-28 03:13:21,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:13:21,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932926723] [2021-12-28 03:13:21,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:21,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:13:21,461 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:13:21,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884121009] [2021-12-28 03:13:21,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:21,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:21,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:13:21,463 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:13:21,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 03:13:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:21,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-28 03:13:21,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:13:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-12-28 03:13:22,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:13:22,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:13:22,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932926723] [2021-12-28 03:13:22,142 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:13:22,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884121009] [2021-12-28 03:13:22,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884121009] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:13:22,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:13:22,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:13:22,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786456673] [2021-12-28 03:13:22,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:13:22,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:13:22,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:13:22,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:13:22,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:13:22,144 INFO L87 Difference]: Start difference. First operand 315 states and 453 transitions. Second operand has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-28 03:13:22,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:13:22,279 INFO L93 Difference]: Finished difference Result 575 states and 825 transitions. [2021-12-28 03:13:22,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:13:22,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 3 states have call successors, (25) Word has length 205 [2021-12-28 03:13:22,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:13:22,282 INFO L225 Difference]: With dead ends: 575 [2021-12-28 03:13:22,282 INFO L226 Difference]: Without dead ends: 309 [2021-12-28 03:13:22,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:13:22,284 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 2 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:13:22,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1469 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:13:22,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-12-28 03:13:22,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2021-12-28 03:13:22,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 179 states have (on average 1.2067039106145252) internal successors, (216), 181 states have internal predecessors, (216), 106 states have call successors, (106), 22 states have call predecessors, (106), 23 states have return successors, (121), 105 states have call predecessors, (121), 105 states have call successors, (121) [2021-12-28 03:13:22,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 443 transitions. [2021-12-28 03:13:22,301 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 443 transitions. Word has length 205 [2021-12-28 03:13:22,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:13:22,301 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 443 transitions. [2021-12-28 03:13:22,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-28 03:13:22,302 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 443 transitions. [2021-12-28 03:13:22,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-12-28 03:13:22,303 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:13:22,303 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:13:22,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 03:13:22,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:22,521 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:13:22,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:13:22,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1115065973, now seen corresponding path program 1 times [2021-12-28 03:13:22,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:13:22,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630603491] [2021-12-28 03:13:22,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:22,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:13:22,573 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:13:22,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1531704856] [2021-12-28 03:13:22,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:22,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:22,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:13:22,575 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:13:22,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 03:13:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:22,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-28 03:13:23,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:13:23,327 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-12-28 03:13:23,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:13:23,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:13:23,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630603491] [2021-12-28 03:13:23,328 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:13:23,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531704856] [2021-12-28 03:13:23,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531704856] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:13:23,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:13:23,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:13:23,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018035117] [2021-12-28 03:13:23,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:13:23,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:13:23,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:13:23,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:13:23,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:13:23,329 INFO L87 Difference]: Start difference. First operand 309 states and 443 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-28 03:13:23,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:13:23,514 INFO L93 Difference]: Finished difference Result 711 states and 1055 transitions. [2021-12-28 03:13:23,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:13:23,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) Word has length 205 [2021-12-28 03:13:23,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:13:23,517 INFO L225 Difference]: With dead ends: 711 [2021-12-28 03:13:23,517 INFO L226 Difference]: Without dead ends: 451 [2021-12-28 03:13:23,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:13:23,518 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 177 mSDsluCounter, 2997 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 3533 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:13:23,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 3533 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:13:23,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-12-28 03:13:23,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 328. [2021-12-28 03:13:23,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 191 states have (on average 1.198952879581152) internal successors, (229), 193 states have internal predecessors, (229), 112 states have call successors, (112), 22 states have call predecessors, (112), 24 states have return successors, (129), 112 states have call predecessors, (129), 111 states have call successors, (129) [2021-12-28 03:13:23,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 470 transitions. [2021-12-28 03:13:23,534 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 470 transitions. Word has length 205 [2021-12-28 03:13:23,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:13:23,535 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 470 transitions. [2021-12-28 03:13:23,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-28 03:13:23,535 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 470 transitions. [2021-12-28 03:13:23,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-12-28 03:13:23,536 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:13:23,536 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:13:23,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-28 03:13:23,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:23,758 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:13:23,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:13:23,758 INFO L85 PathProgramCache]: Analyzing trace with hash 383098547, now seen corresponding path program 1 times [2021-12-28 03:13:23,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:13:23,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128437853] [2021-12-28 03:13:23,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:23,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:13:23,801 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:13:23,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354931163] [2021-12-28 03:13:23,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:23,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:23,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:13:23,802 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:13:23,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-28 03:13:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:24,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-28 03:13:24,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:13:24,534 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-12-28 03:13:24,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:13:24,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:13:24,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128437853] [2021-12-28 03:13:24,535 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:13:24,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354931163] [2021-12-28 03:13:24,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354931163] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:13:24,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:13:24,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:13:24,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798119782] [2021-12-28 03:13:24,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:13:24,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:13:24,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:13:24,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:13:24,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:13:24,538 INFO L87 Difference]: Start difference. First operand 328 states and 470 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-28 03:13:24,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:13:24,708 INFO L93 Difference]: Finished difference Result 591 states and 845 transitions. [2021-12-28 03:13:24,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:13:24,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 205 [2021-12-28 03:13:24,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:13:24,710 INFO L225 Difference]: With dead ends: 591 [2021-12-28 03:13:24,711 INFO L226 Difference]: Without dead ends: 312 [2021-12-28 03:13:24,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:13:24,712 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 170 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:13:24,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 1658 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:13:24,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-12-28 03:13:24,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2021-12-28 03:13:24,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 181 states have (on average 1.1988950276243093) internal successors, (217), 184 states have internal predecessors, (217), 106 states have call successors, (106), 22 states have call predecessors, (106), 24 states have return successors, (122), 105 states have call predecessors, (122), 105 states have call successors, (122) [2021-12-28 03:13:24,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 445 transitions. [2021-12-28 03:13:24,726 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 445 transitions. Word has length 205 [2021-12-28 03:13:24,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:13:24,726 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 445 transitions. [2021-12-28 03:13:24,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-28 03:13:24,727 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 445 transitions. [2021-12-28 03:13:24,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-12-28 03:13:24,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:13:24,728 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:13:24,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-28 03:13:24,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-28 03:13:24,949 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:13:24,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:13:24,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1036256056, now seen corresponding path program 1 times [2021-12-28 03:13:24,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:13:24,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615486973] [2021-12-28 03:13:24,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:24,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:13:24,993 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:13:24,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [512632837] [2021-12-28 03:13:24,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:24,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:24,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:13:24,995 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:13:24,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-28 03:13:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:25,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-28 03:13:25,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:13:25,707 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-28 03:13:25,710 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-28 03:13:25,945 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 218 proven. 4 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-12-28 03:13:25,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:13:26,553 INFO L353 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-28 03:13:26,554 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-12-28 03:13:26,559 INFO L353 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-12-28 03:13:26,560 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2021-12-28 03:13:26,627 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 36 proven. 60 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2021-12-28 03:13:26,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:13:26,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615486973] [2021-12-28 03:13:26,628 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:13:26,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512632837] [2021-12-28 03:13:26,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512632837] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:13:26,628 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:13:26,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 21 [2021-12-28 03:13:26,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992509466] [2021-12-28 03:13:26,628 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:13:26,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-28 03:13:26,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:13:26,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-28 03:13:26,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2021-12-28 03:13:26,630 INFO L87 Difference]: Start difference. First operand 312 states and 445 transitions. Second operand has 21 states, 18 states have (on average 6.222222222222222) internal successors, (112), 17 states have internal predecessors, (112), 9 states have call successors, (51), 4 states have call predecessors, (51), 6 states have return successors, (49), 7 states have call predecessors, (49), 8 states have call successors, (49) [2021-12-28 03:13:27,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:13:27,938 INFO L93 Difference]: Finished difference Result 615 states and 898 transitions. [2021-12-28 03:13:27,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-28 03:13:27,939 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 6.222222222222222) internal successors, (112), 17 states have internal predecessors, (112), 9 states have call successors, (51), 4 states have call predecessors, (51), 6 states have return successors, (49), 7 states have call predecessors, (49), 8 states have call successors, (49) Word has length 216 [2021-12-28 03:13:27,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:13:27,941 INFO L225 Difference]: With dead ends: 615 [2021-12-28 03:13:27,941 INFO L226 Difference]: Without dead ends: 325 [2021-12-28 03:13:27,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 413 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=806, Unknown=0, NotChecked=0, Total=930 [2021-12-28 03:13:27,942 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 141 mSDsluCounter, 5224 mSDsCounter, 0 mSdLazyCounter, 1810 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 5571 SdHoareTripleChecker+Invalid, 1944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:13:27,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 5571 Invalid, 1944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1810 Invalid, 0 Unknown, 116 Unchecked, 1.0s Time] [2021-12-28 03:13:27,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-12-28 03:13:27,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 315. [2021-12-28 03:13:27,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 183 states have (on average 1.1967213114754098) internal successors, (219), 187 states have internal predecessors, (219), 106 states have call successors, (106), 22 states have call predecessors, (106), 25 states have return successors, (145), 105 states have call predecessors, (145), 105 states have call successors, (145) [2021-12-28 03:13:27,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 470 transitions. [2021-12-28 03:13:27,957 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 470 transitions. Word has length 216 [2021-12-28 03:13:27,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:13:27,957 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 470 transitions. [2021-12-28 03:13:27,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 6.222222222222222) internal successors, (112), 17 states have internal predecessors, (112), 9 states have call successors, (51), 4 states have call predecessors, (51), 6 states have return successors, (49), 7 states have call predecessors, (49), 8 states have call successors, (49) [2021-12-28 03:13:27,957 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 470 transitions. [2021-12-28 03:13:27,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-12-28 03:13:27,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:13:27,959 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:13:27,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-28 03:13:28,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-28 03:13:28,175 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:13:28,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:13:28,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1285474944, now seen corresponding path program 1 times [2021-12-28 03:13:28,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:13:28,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593475850] [2021-12-28 03:13:28,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:28,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:13:28,220 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:13:28,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903035433] [2021-12-28 03:13:28,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:28,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:28,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:13:28,223 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:13:28,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-28 03:13:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:28,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:13:28,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:13:28,947 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-12-28 03:13:28,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:13:28,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:13:28,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593475850] [2021-12-28 03:13:28,947 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:13:28,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903035433] [2021-12-28 03:13:28,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903035433] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:13:28,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:13:28,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:13:28,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674268155] [2021-12-28 03:13:28,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:13:28,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:13:28,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:13:28,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:13:28,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:13:28,949 INFO L87 Difference]: Start difference. First operand 315 states and 470 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-28 03:13:29,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:13:29,158 INFO L93 Difference]: Finished difference Result 609 states and 959 transitions. [2021-12-28 03:13:29,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:13:29,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 218 [2021-12-28 03:13:29,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:13:29,160 INFO L225 Difference]: With dead ends: 609 [2021-12-28 03:13:29,161 INFO L226 Difference]: Without dead ends: 320 [2021-12-28 03:13:29,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:13:29,162 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 7 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:13:29,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1569 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:13:29,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-12-28 03:13:29,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 316. [2021-12-28 03:13:29,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 184 states have (on average 1.1956521739130435) internal successors, (220), 188 states have internal predecessors, (220), 106 states have call successors, (106), 22 states have call predecessors, (106), 25 states have return successors, (145), 105 states have call predecessors, (145), 105 states have call successors, (145) [2021-12-28 03:13:29,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 471 transitions. [2021-12-28 03:13:29,177 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 471 transitions. Word has length 218 [2021-12-28 03:13:29,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:13:29,177 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 471 transitions. [2021-12-28 03:13:29,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-28 03:13:29,178 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 471 transitions. [2021-12-28 03:13:29,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-12-28 03:13:29,179 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:13:29,179 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:13:29,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-28 03:13:29,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-28 03:13:29,395 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:13:29,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:13:29,396 INFO L85 PathProgramCache]: Analyzing trace with hash -82985666, now seen corresponding path program 1 times [2021-12-28 03:13:29,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:13:29,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265140319] [2021-12-28 03:13:29,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:29,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:13:29,450 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:13:29,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [844003672] [2021-12-28 03:13:29,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:29,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:29,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:13:29,452 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:13:29,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-28 03:13:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:29,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 2997 conjuncts, 65 conjunts are in the unsatisfiable core [2021-12-28 03:13:29,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:13:37,112 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-12-28 03:13:37,116 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-12-28 03:13:37,118 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-12-28 03:13:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 265 proven. 6 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-12-28 03:13:37,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:13:37,980 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-28 03:13:37,983 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-12-28 03:13:38,066 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-12-28 03:13:38,169 INFO L353 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-28 03:13:38,169 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2021-12-28 03:13:38,248 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 39 proven. 60 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2021-12-28 03:13:38,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:13:38,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265140319] [2021-12-28 03:13:38,249 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:13:38,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844003672] [2021-12-28 03:13:38,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844003672] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:13:38,249 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:13:38,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18] total 31 [2021-12-28 03:13:38,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924704403] [2021-12-28 03:13:38,249 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:13:38,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-28 03:13:38,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:13:38,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-28 03:13:38,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=809, Unknown=0, NotChecked=0, Total=930 [2021-12-28 03:13:38,250 INFO L87 Difference]: Start difference. First operand 316 states and 471 transitions. Second operand has 31 states, 27 states have (on average 5.592592592592593) internal successors, (151), 27 states have internal predecessors, (151), 16 states have call successors, (56), 6 states have call predecessors, (56), 10 states have return successors, (53), 13 states have call predecessors, (53), 15 states have call successors, (53) [2021-12-28 03:13:40,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:13:40,838 INFO L93 Difference]: Finished difference Result 781 states and 1231 transitions. [2021-12-28 03:13:40,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-28 03:13:40,838 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 5.592592592592593) internal successors, (151), 27 states have internal predecessors, (151), 16 states have call successors, (56), 6 states have call predecessors, (56), 10 states have return successors, (53), 13 states have call predecessors, (53), 15 states have call successors, (53) Word has length 218 [2021-12-28 03:13:40,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:13:40,841 INFO L225 Difference]: With dead ends: 781 [2021-12-28 03:13:40,841 INFO L226 Difference]: Without dead ends: 500 [2021-12-28 03:13:40,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 401 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=217, Invalid=1423, Unknown=0, NotChecked=0, Total=1640 [2021-12-28 03:13:40,843 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 527 mSDsluCounter, 5058 mSDsCounter, 0 mSdLazyCounter, 3188 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 5471 SdHoareTripleChecker+Invalid, 4640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 3188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1286 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:13:40,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 5471 Invalid, 4640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 3188 Invalid, 0 Unknown, 1286 Unchecked, 2.2s Time] [2021-12-28 03:13:40,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-12-28 03:13:40,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 365. [2021-12-28 03:13:40,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 216 states have (on average 1.1666666666666667) internal successors, (252), 220 states have internal predecessors, (252), 114 states have call successors, (114), 30 states have call predecessors, (114), 34 states have return successors, (177), 114 states have call predecessors, (177), 113 states have call successors, (177) [2021-12-28 03:13:40,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 543 transitions. [2021-12-28 03:13:40,869 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 543 transitions. Word has length 218 [2021-12-28 03:13:40,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:13:40,870 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 543 transitions. [2021-12-28 03:13:40,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 5.592592592592593) internal successors, (151), 27 states have internal predecessors, (151), 16 states have call successors, (56), 6 states have call predecessors, (56), 10 states have return successors, (53), 13 states have call predecessors, (53), 15 states have call successors, (53) [2021-12-28 03:13:40,870 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 543 transitions. [2021-12-28 03:13:40,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-12-28 03:13:40,872 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:13:40,872 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:13:40,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-28 03:13:41,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-28 03:13:41,086 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:13:41,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:13:41,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1265933822, now seen corresponding path program 1 times [2021-12-28 03:13:41,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:13:41,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018541274] [2021-12-28 03:13:41,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:41,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:13:41,136 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:13:41,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1069224056] [2021-12-28 03:13:41,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:41,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:41,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:13:41,137 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:13:41,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-28 03:13:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:41,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 2997 conjuncts, 77 conjunts are in the unsatisfiable core [2021-12-28 03:13:41,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:13:41,609 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-28 03:13:45,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:13:45,228 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-28 03:13:45,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:13:45,233 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-28 03:13:45,313 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1636 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1636))) (exists ((v_ArrVal_1635 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1635) |c_#memory_$Pointer$.base|))) is different from true [2021-12-28 03:13:45,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:13:45,443 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-28 03:13:45,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:13:45,446 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-28 03:13:45,452 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-28 03:13:45,453 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-28 03:13:45,580 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-28 03:13:45,582 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-28 03:13:45,800 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 211 proven. 16 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2021-12-28 03:13:45,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:13:46,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:13:46,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018541274] [2021-12-28 03:13:46,408 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:13:46,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069224056] [2021-12-28 03:13:46,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069224056] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:13:46,408 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:13:46,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-12-28 03:13:46,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109159168] [2021-12-28 03:13:46,409 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-28 03:13:46,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-28 03:13:46,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:13:46,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-28 03:13:46,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=4, NotChecked=44, Total=600 [2021-12-28 03:13:46,410 INFO L87 Difference]: Start difference. First operand 365 states and 543 transitions. Second operand has 17 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 7 states have call successors, (29), 6 states have call predecessors, (29), 8 states have return successors, (27), 6 states have call predecessors, (27), 7 states have call successors, (27) [2021-12-28 03:13:54,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:13:54,997 INFO L93 Difference]: Finished difference Result 766 states and 1242 transitions. [2021-12-28 03:13:54,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-28 03:13:54,997 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 7 states have call successors, (29), 6 states have call predecessors, (29), 8 states have return successors, (27), 6 states have call predecessors, (27), 7 states have call successors, (27) Word has length 218 [2021-12-28 03:13:54,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:13:55,000 INFO L225 Difference]: With dead ends: 766 [2021-12-28 03:13:55,000 INFO L226 Difference]: Without dead ends: 431 [2021-12-28 03:13:55,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 358 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=146, Invalid=1036, Unknown=12, NotChecked=66, Total=1260 [2021-12-28 03:13:55,002 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 112 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 2782 SdHoareTripleChecker+Invalid, 4122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1861 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:13:55,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 2782 Invalid, 4122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2133 Invalid, 0 Unknown, 1861 Unchecked, 1.2s Time] [2021-12-28 03:13:55,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-12-28 03:13:55,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 391. [2021-12-28 03:13:55,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 236 states have (on average 1.1652542372881356) internal successors, (275), 243 states have internal predecessors, (275), 115 states have call successors, (115), 31 states have call predecessors, (115), 39 states have return successors, (230), 116 states have call predecessors, (230), 114 states have call successors, (230) [2021-12-28 03:13:55,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 620 transitions. [2021-12-28 03:13:55,030 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 620 transitions. Word has length 218 [2021-12-28 03:13:55,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:13:55,030 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 620 transitions. [2021-12-28 03:13:55,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 7 states have call successors, (29), 6 states have call predecessors, (29), 8 states have return successors, (27), 6 states have call predecessors, (27), 7 states have call successors, (27) [2021-12-28 03:13:55,030 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 620 transitions. [2021-12-28 03:13:55,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-12-28 03:13:55,031 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:13:55,032 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:13:55,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-28 03:13:55,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-28 03:13:55,263 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:13:55,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:13:55,264 INFO L85 PathProgramCache]: Analyzing trace with hash -102526788, now seen corresponding path program 1 times [2021-12-28 03:13:55,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:13:55,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442215592] [2021-12-28 03:13:55,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:55,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:13:55,304 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:13:55,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1769170547] [2021-12-28 03:13:55,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:55,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:55,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:13:55,306 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:13:55,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-28 03:13:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:55,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 3002 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:13:55,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:13:56,041 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-12-28 03:13:56,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:13:56,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:13:56,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442215592] [2021-12-28 03:13:56,041 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:13:56,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769170547] [2021-12-28 03:13:56,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769170547] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:13:56,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:13:56,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:13:56,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268107034] [2021-12-28 03:13:56,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:13:56,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:13:56,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:13:56,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:13:56,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:13:56,043 INFO L87 Difference]: Start difference. First operand 391 states and 620 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-28 03:13:56,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:13:56,275 INFO L93 Difference]: Finished difference Result 704 states and 1174 transitions. [2021-12-28 03:13:56,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:13:56,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 218 [2021-12-28 03:13:56,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:13:56,277 INFO L225 Difference]: With dead ends: 704 [2021-12-28 03:13:56,277 INFO L226 Difference]: Without dead ends: 387 [2021-12-28 03:13:56,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:13:56,279 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 13 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:13:56,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 1540 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:13:56,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-12-28 03:13:56,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 384. [2021-12-28 03:13:56,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 230 states have (on average 1.1565217391304348) internal successors, (266), 236 states have internal predecessors, (266), 115 states have call successors, (115), 31 states have call predecessors, (115), 38 states have return successors, (205), 116 states have call predecessors, (205), 114 states have call successors, (205) [2021-12-28 03:13:56,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 586 transitions. [2021-12-28 03:13:56,299 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 586 transitions. Word has length 218 [2021-12-28 03:13:56,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:13:56,299 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 586 transitions. [2021-12-28 03:13:56,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-28 03:13:56,299 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 586 transitions. [2021-12-28 03:13:56,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-12-28 03:13:56,300 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:13:56,301 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:13:56,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-28 03:13:56,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-28 03:13:56,514 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:13:56,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:13:56,514 INFO L85 PathProgramCache]: Analyzing trace with hash -989000721, now seen corresponding path program 1 times [2021-12-28 03:13:56,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:13:56,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75317052] [2021-12-28 03:13:56,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:56,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:13:56,557 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:13:56,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3009387] [2021-12-28 03:13:56,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:56,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:56,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:13:56,559 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:13:56,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-28 03:13:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:57,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 3036 conjuncts, 85 conjunts are in the unsatisfiable core [2021-12-28 03:13:57,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:13:57,090 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-28 03:13:57,215 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-28 03:13:57,237 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-12-28 03:13:57,321 INFO L353 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-28 03:13:57,321 INFO L387 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 34 treesize of output 27 [2021-12-28 03:13:57,352 INFO L353 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2021-12-28 03:13:57,353 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2021-12-28 03:13:57,442 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2003 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2003) |c_#memory_$Pointer$.base|)) is different from true [2021-12-28 03:13:57,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:13:57,560 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2021-12-28 03:13:57,574 INFO L353 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2021-12-28 03:13:57,577 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24