./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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_init_dynamic_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ffbf3b1479afd9aaa2ec45fcd2782998a39316f97238379433376f7ba5094eb5 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 16:59:32,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 16:59:32,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 16:59:32,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 16:59:32,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 16:59:32,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 16:59:32,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 16:59:32,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 16:59:32,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 16:59:32,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 16:59:32,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 16:59:32,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 16:59:32,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 16:59:32,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 16:59:32,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 16:59:32,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 16:59:32,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 16:59:32,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 16:59:32,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 16:59:32,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 16:59:32,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 16:59:32,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 16:59:32,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 16:59:32,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 16:59:32,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 16:59:32,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 16:59:32,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 16:59:32,828 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 16:59:32,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 16:59:32,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 16:59:32,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 16:59:32,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 16:59:32,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 16:59:32,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 16:59:32,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 16:59:32,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 16:59:32,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 16:59:32,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 16:59:32,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 16:59:32,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 16:59:32,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 16:59:32,838 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 16:59:32,869 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 16:59:32,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 16:59:32,870 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 16:59:32,870 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 16:59:32,871 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 16:59:32,871 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 16:59:32,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 16:59:32,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 16:59:32,872 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 16:59:32,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 16:59:32,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 16:59:32,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 16:59:32,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 16:59:32,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 16:59:32,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 16:59:32,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 16:59:32,874 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 16:59:32,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 16:59:32,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 16:59:32,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 16:59:32,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 16:59:32,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:59:32,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 16:59:32,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 16:59:32,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 16:59:32,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 16:59:32,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 16:59:32,876 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 16:59:32,876 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 16:59:32,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 16:59:32,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 16:59:32,877 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ffbf3b1479afd9aaa2ec45fcd2782998a39316f97238379433376f7ba5094eb5 [2021-12-14 16:59:33,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 16:59:33,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 16:59:33,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 16:59:33,127 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 16:59:33,127 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 16:59:33,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i [2021-12-14 16:59:33,173 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b2956ecd/dacc0fef81204816bc9e98d079d0bf70/FLAG286d5fb74 [2021-12-14 16:59:33,807 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 16:59:33,807 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i [2021-12-14 16:59:33,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b2956ecd/dacc0fef81204816bc9e98d079d0bf70/FLAG286d5fb74 [2021-12-14 16:59:33,986 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b2956ecd/dacc0fef81204816bc9e98d079d0bf70 [2021-12-14 16:59:33,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 16:59:33,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 16:59:33,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 16:59:33,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 16:59:33,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 16:59:33,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:59:33" (1/1) ... [2021-12-14 16:59:33,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cfa8a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:33, skipping insertion in model container [2021-12-14 16:59:33,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:59:33" (1/1) ... [2021-12-14 16:59:34,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 16:59:34,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 16:59:34,264 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_init_dynamic_harness.i[4501,4514] [2021-12-14 16:59:34,270 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_init_dynamic_harness.i[4561,4574] [2021-12-14 16:59:34,802 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 16:59:34,855 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:34,856 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:34,856 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:34,857 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:34,858 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:34,866 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:34,866 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:34,868 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:34,868 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:34,870 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:34,870 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:34,871 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:34,871 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:35,072 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 16:59:35,073 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 16:59:35,074 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 16:59:35,075 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 16:59:35,076 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 16:59:35,077 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 16:59:35,077 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 16:59:35,078 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 16:59:35,079 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 16:59:35,079 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 16:59:35,150 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:35,162 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:35,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:59:35,223 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 16:59:35,262 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_init_dynamic_harness.i[4501,4514] [2021-12-14 16:59:35,263 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_init_dynamic_harness.i[4561,4574] [2021-12-14 16:59:35,314 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 16:59:35,325 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:35,325 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:35,326 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:35,326 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:35,327 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:35,332 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:35,332 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:35,333 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:35,334 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:35,334 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:35,339 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:35,340 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:35,340 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:35,381 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 16:59:35,382 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 16:59:35,383 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 16:59:35,388 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 16:59:35,389 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 16:59:35,390 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 16:59:35,390 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 16:59:35,391 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 16:59:35,395 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 16:59:35,396 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 16:59:35,414 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:35,422 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 16:59:35,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:59:35,652 INFO L208 MainTranslator]: Completed translation [2021-12-14 16:59:35,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:35 WrapperNode [2021-12-14 16:59:35,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 16:59:35,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 16:59:35,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 16:59:35,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 16:59:35,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:35" (1/1) ... [2021-12-14 16:59:35,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:35" (1/1) ... [2021-12-14 16:59:35,805 INFO L137 Inliner]: procedures = 690, calls = 1561, calls flagged for inlining = 47, calls inlined = 6, statements flattened = 595 [2021-12-14 16:59:35,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 16:59:35,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 16:59:35,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 16:59:35,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 16:59:35,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:35" (1/1) ... [2021-12-14 16:59:35,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:35" (1/1) ... [2021-12-14 16:59:35,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:35" (1/1) ... [2021-12-14 16:59:35,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:35" (1/1) ... [2021-12-14 16:59:35,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:35" (1/1) ... [2021-12-14 16:59:35,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:35" (1/1) ... [2021-12-14 16:59:35,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:35" (1/1) ... [2021-12-14 16:59:35,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 16:59:35,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 16:59:35,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 16:59:35,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 16:59:35,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:35" (1/1) ... [2021-12-14 16:59:35,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:59:35,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:59:35,904 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) [2021-12-14 16:59:35,912 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 [2021-12-14 16:59:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-14 16:59:35,932 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-14 16:59:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 16:59:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-14 16:59:35,933 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-14 16:59:35,933 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-14 16:59:35,933 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-14 16:59:35,933 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-12-14 16:59:35,933 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-12-14 16:59:35,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 16:59:35,934 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-14 16:59:35,934 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-14 16:59:35,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 16:59:35,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 16:59:35,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 16:59:35,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 16:59:35,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 16:59:35,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 16:59:35,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 16:59:35,935 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-14 16:59:35,935 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-14 16:59:35,935 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-14 16:59:35,935 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-14 16:59:35,935 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-14 16:59:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-14 16:59:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 16:59:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 16:59:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 16:59:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 16:59:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-12-14 16:59:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-12-14 16:59:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 16:59:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 16:59:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 16:59:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-14 16:59:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-14 16:59:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-14 16:59:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-14 16:59:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 16:59:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 16:59:36,211 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 16:59:36,214 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 16:59:36,972 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 16:59:36,980 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 16:59:36,981 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-14 16:59:36,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:59:36 BoogieIcfgContainer [2021-12-14 16:59:36,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 16:59:36,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 16:59:36,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 16:59:36,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 16:59:36,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:59:33" (1/3) ... [2021-12-14 16:59:36,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2addc29b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:59:36, skipping insertion in model container [2021-12-14 16:59:36,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:59:35" (2/3) ... [2021-12-14 16:59:36,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2addc29b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:59:36, skipping insertion in model container [2021-12-14 16:59:36,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:59:36" (3/3) ... [2021-12-14 16:59:36,990 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_init_dynamic_harness.i [2021-12-14 16:59:36,994 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 16:59:36,994 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 16:59:37,046 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 16:59:37,063 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 [2021-12-14 16:59:37,064 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 16:59:37,085 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 89 states have internal predecessors, (108), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-12-14 16:59:37,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-14 16:59:37,094 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:59:37,095 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-14 16:59:37,097 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:59:37,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:59:37,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1457384713, now seen corresponding path program 1 times [2021-12-14 16:59:37,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:59:37,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52443552] [2021-12-14 16:59:37,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:59:37,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:59:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:37,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 16:59:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:37,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 16:59:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:37,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:59:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:37,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 16:59:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:37,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 16:59:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:37,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 16:59:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:37,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-14 16:59:37,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:59:37,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52443552] [2021-12-14 16:59:37,699 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-14 16:59:37,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397355078] [2021-12-14 16:59:37,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:59:37,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:59:37,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:59:37,701 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) [2021-12-14 16:59:37,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 16:59:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:38,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 1973 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 16:59:38,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:59:38,220 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-14 16:59:38,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 16:59:38,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397355078] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:59:38,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:59:38,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 16:59:38,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136537407] [2021-12-14 16:59:38,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:59:38,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 16:59:38,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:59:38,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 16:59:38,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 16:59:38,258 INFO L87 Difference]: Start difference. First operand has 137 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 89 states have internal predecessors, (108), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 16:59:38,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:59:38,309 INFO L93 Difference]: Finished difference Result 269 states and 367 transitions. [2021-12-14 16:59:38,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 16:59:38,312 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2021-12-14 16:59:38,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:59:38,322 INFO L225 Difference]: With dead ends: 269 [2021-12-14 16:59:38,322 INFO L226 Difference]: Without dead ends: 130 [2021-12-14 16:59:38,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 16:59:38,340 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 16:59:38,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 16:59:38,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-14 16:59:38,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-12-14 16:59:38,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 83 states have internal predecessors, (97), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-12-14 16:59:38,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 163 transitions. [2021-12-14 16:59:38,396 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 163 transitions. Word has length 54 [2021-12-14 16:59:38,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:59:38,398 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 163 transitions. [2021-12-14 16:59:38,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 16:59:38,398 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 163 transitions. [2021-12-14 16:59:38,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-14 16:59:38,400 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:59:38,400 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-14 16:59:38,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-14 16:59:38,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-14 16:59:38,628 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:59:38,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:59:38,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1798443805, now seen corresponding path program 1 times [2021-12-14 16:59:38,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:59:38,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072046183] [2021-12-14 16:59:38,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:59:38,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:59:38,686 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 16:59:38,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [698894597] [2021-12-14 16:59:38,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:59:38,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:59:38,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:59:38,688 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) [2021-12-14 16:59:38,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 16:59:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:39,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 2001 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-14 16:59:39,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:59:39,241 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-14 16:59:39,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 16:59:39,410 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-14 16:59:39,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:59:39,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072046183] [2021-12-14 16:59:39,411 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 16:59:39,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698894597] [2021-12-14 16:59:39,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698894597] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-14 16:59:39,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 16:59:39,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2021-12-14 16:59:39,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996259792] [2021-12-14 16:59:39,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:59:39,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 16:59:39,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:59:39,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 16:59:39,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-14 16:59:39,414 INFO L87 Difference]: Start difference. First operand 130 states and 163 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-14 16:59:39,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:59:39,465 INFO L93 Difference]: Finished difference Result 138 states and 171 transitions. [2021-12-14 16:59:39,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 16:59:39,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 60 [2021-12-14 16:59:39,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:59:39,468 INFO L225 Difference]: With dead ends: 138 [2021-12-14 16:59:39,468 INFO L226 Difference]: Without dead ends: 136 [2021-12-14 16:59:39,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-14 16:59:39,469 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 6 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 16:59:39,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 629 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 16:59:39,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-12-14 16:59:39,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2021-12-14 16:59:39,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 87 states have internal predecessors, (100), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2021-12-14 16:59:39,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 168 transitions. [2021-12-14 16:59:39,482 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 168 transitions. Word has length 60 [2021-12-14 16:59:39,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:59:39,483 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 168 transitions. [2021-12-14 16:59:39,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-14 16:59:39,483 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 168 transitions. [2021-12-14 16:59:39,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-14 16:59:39,485 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:59:39,485 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-14 16:59:39,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 16:59:39,698 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,SelfDestructingSolverStorable1 [2021-12-14 16:59:39,698 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:59:39,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:59:39,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1800290847, now seen corresponding path program 1 times [2021-12-14 16:59:39,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:59:39,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449106620] [2021-12-14 16:59:39,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:59:39,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:59:39,786 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 16:59:39,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704464368] [2021-12-14 16:59:39,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:59:39,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:59:39,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:59:39,788 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) [2021-12-14 16:59:39,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 16:59:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:40,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 2006 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 16:59:40,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:59:40,304 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-14 16:59:40,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 16:59:40,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:59:40,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449106620] [2021-12-14 16:59:40,305 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 16:59:40,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704464368] [2021-12-14 16:59:40,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704464368] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:59:40,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:59:40,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 16:59:40,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382149340] [2021-12-14 16:59:40,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:59:40,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 16:59:40,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:59:40,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 16:59:40,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 16:59:40,308 INFO L87 Difference]: Start difference. First operand 135 states and 168 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-14 16:59:40,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:59:40,340 INFO L93 Difference]: Finished difference Result 258 states and 318 transitions. [2021-12-14 16:59:40,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 16:59:40,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 60 [2021-12-14 16:59:40,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:59:40,347 INFO L225 Difference]: With dead ends: 258 [2021-12-14 16:59:40,347 INFO L226 Difference]: Without dead ends: 136 [2021-12-14 16:59:40,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 16:59:40,353 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 2 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 16:59:40,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 481 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 16:59:40,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-12-14 16:59:40,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-12-14 16:59:40,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 85 states have (on average 1.188235294117647) internal successors, (101), 88 states have internal predecessors, (101), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2021-12-14 16:59:40,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 169 transitions. [2021-12-14 16:59:40,374 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 169 transitions. Word has length 60 [2021-12-14 16:59:40,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:59:40,374 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 169 transitions. [2021-12-14 16:59:40,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-14 16:59:40,375 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 169 transitions. [2021-12-14 16:59:40,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-14 16:59:40,376 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:59:40,376 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-14 16:59:40,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 16:59:40,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:59:40,604 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:59:40,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:59:40,604 INFO L85 PathProgramCache]: Analyzing trace with hash 169080727, now seen corresponding path program 1 times [2021-12-14 16:59:40,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:59:40,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097079752] [2021-12-14 16:59:40,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:59:40,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:59:40,662 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 16:59:40,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1746012617] [2021-12-14 16:59:40,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:59:40,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:59:40,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:59:40,664 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) [2021-12-14 16:59:40,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 16:59:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:59:41,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 2025 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 16:59:41,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:59:41,185 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-14 16:59:41,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 16:59:41,361 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-14 16:59:41,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:59:41,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097079752] [2021-12-14 16:59:41,363 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 16:59:41,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746012617] [2021-12-14 16:59:41,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746012617] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 16:59:41,364 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 16:59:41,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-14 16:59:41,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167577470] [2021-12-14 16:59:41,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 16:59:41,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 16:59:41,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:59:41,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 16:59:41,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 16:59:41,367 INFO L87 Difference]: Start difference. First operand 136 states and 169 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 16:59:41,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:59:41,458 INFO L93 Difference]: Finished difference Result 263 states and 325 transitions. [2021-12-14 16:59:41,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 16:59:41,459 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2021-12-14 16:59:41,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:59:41,462 INFO L225 Difference]: With dead ends: 263 [2021-12-14 16:59:41,462 INFO L226 Difference]: Without dead ends: 139 [2021-12-14 16:59:41,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-12-14 16:59:41,465 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 12 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 16:59:41,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 480 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 16:59:41,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-12-14 16:59:41,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-12-14 16:59:41,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 88 states have (on average 1.1818181818181819) internal successors, (104), 91 states have internal predecessors, (104), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2021-12-14 16:59:41,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 172 transitions. [2021-12-14 16:59:41,485 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 172 transitions. Word has length 61 [2021-12-14 16:59:41,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:59:41,486 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 172 transitions. [2021-12-14 16:59:41,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 16:59:41,487 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 172 transitions. [2021-12-14 16:59:41,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-14 16:59:41,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:59:41,490 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-14 16:59:41,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 16:59:41,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:59:41,711 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:59:41,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:59:41,712 INFO L85 PathProgramCache]: Analyzing trace with hash -909385697, now seen corresponding path program 2 times [2021-12-14 16:59:41,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:59:41,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833724452] [2021-12-14 16:59:41,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:59:41,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:59:41,802 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 16:59:41,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [805714040] [2021-12-14 16:59:41,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 16:59:41,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:59:41,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:59:41,804 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) [2021-12-14 16:59:41,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 16:59:43,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 16:59:43,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 16:59:43,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 2082 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-14 16:59:43,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:59:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-14 16:59:44,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 16:59:44,244 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-14 16:59:44,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:59:44,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833724452] [2021-12-14 16:59:44,245 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 16:59:44,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805714040] [2021-12-14 16:59:44,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805714040] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 16:59:44,245 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 16:59:44,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-12-14 16:59:44,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87123407] [2021-12-14 16:59:44,246 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 16:59:44,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-14 16:59:44,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:59:44,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-14 16:59:44,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-12-14 16:59:44,247 INFO L87 Difference]: Start difference. First operand 139 states and 172 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 16:59:44,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:59:44,692 INFO L93 Difference]: Finished difference Result 269 states and 334 transitions. [2021-12-14 16:59:44,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 16:59:44,699 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 64 [2021-12-14 16:59:44,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:59:44,701 INFO L225 Difference]: With dead ends: 269 [2021-12-14 16:59:44,701 INFO L226 Difference]: Without dead ends: 145 [2021-12-14 16:59:44,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2021-12-14 16:59:44,703 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 22 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 16:59:44,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 1600 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 16:59:44,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-12-14 16:59:44,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-12-14 16:59:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 94 states have (on average 1.1702127659574468) internal successors, (110), 97 states have internal predecessors, (110), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2021-12-14 16:59:44,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 178 transitions. [2021-12-14 16:59:44,718 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 178 transitions. Word has length 64 [2021-12-14 16:59:44,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:59:44,719 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 178 transitions. [2021-12-14 16:59:44,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 16:59:44,719 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 178 transitions. [2021-12-14 16:59:44,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-14 16:59:44,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:59:44,722 INFO L514 BasicCegarLoop]: trace histogram [10, 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] [2021-12-14 16:59:44,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-14 16:59:44,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:59:44,928 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:59:44,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:59:44,928 INFO L85 PathProgramCache]: Analyzing trace with hash -555602657, now seen corresponding path program 3 times [2021-12-14 16:59:44,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:59:44,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136319478] [2021-12-14 16:59:44,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:59:44,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:59:44,986 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 16:59:44,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581374695] [2021-12-14 16:59:44,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-14 16:59:44,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:59:44,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:59:44,997 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) [2021-12-14 16:59:44,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-14 16:59:50,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-14 16:59:50,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 16:59:50,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 2196 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-14 16:59:50,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:59:50,564 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-14 16:59:50,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 16:59:51,174 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-14 16:59:51,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:59:51,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136319478] [2021-12-14 16:59:51,174 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 16:59:51,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581374695] [2021-12-14 16:59:51,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581374695] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 16:59:51,175 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 16:59:51,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-12-14 16:59:51,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676020260] [2021-12-14 16:59:51,175 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 16:59:51,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-14 16:59:51,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:59:51,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-14 16:59:51,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2021-12-14 16:59:51,177 INFO L87 Difference]: Start difference. First operand 145 states and 178 transitions. Second operand has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 16:59:56,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:59:56,690 INFO L93 Difference]: Finished difference Result 281 states and 352 transitions. [2021-12-14 16:59:56,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-14 16:59:56,696 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 70 [2021-12-14 16:59:56,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:59:56,698 INFO L225 Difference]: With dead ends: 281 [2021-12-14 16:59:56,698 INFO L226 Difference]: Without dead ends: 157 [2021-12-14 16:59:56,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=498, Invalid=908, Unknown=0, NotChecked=0, Total=1406 [2021-12-14 16:59:56,700 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 87 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1910 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 16:59:56,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 1910 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 16:59:56,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-14 16:59:56,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-12-14 16:59:56,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 106 states have (on average 1.150943396226415) internal successors, (122), 109 states have internal predecessors, (122), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2021-12-14 16:59:56,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 190 transitions. [2021-12-14 16:59:56,714 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 190 transitions. Word has length 70 [2021-12-14 16:59:56,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:59:56,714 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 190 transitions. [2021-12-14 16:59:56,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 16:59:56,715 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 190 transitions. [2021-12-14 16:59:56,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-14 16:59:56,717 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:59:56,717 INFO L514 BasicCegarLoop]: trace histogram [22, 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] [2021-12-14 16:59:56,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-14 16:59:56,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:59:56,936 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:59:56,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:59:56,937 INFO L85 PathProgramCache]: Analyzing trace with hash 408258335, now seen corresponding path program 4 times [2021-12-14 16:59:56,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:59:56,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982904434] [2021-12-14 16:59:56,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:59:56,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:59:57,022 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 16:59:57,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1746657996] [2021-12-14 16:59:57,022 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-14 16:59:57,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:59:57,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:59:57,024 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) [2021-12-14 16:59:57,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-14 16:59:57,604 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-14 16:59:57,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 16:59:57,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 2424 conjuncts, 112 conjunts are in the unsatisfiable core [2021-12-14 16:59:57,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 16:59:57,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-14 16:59:57,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-14 16:59:58,033 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-12-14 16:59:58,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-12-14 16:59:58,077 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-14 16:59:58,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-14 16:59:58,122 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-14 16:59:58,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-14 16:59:58,165 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-14 16:59:58,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-14 16:59:58,210 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-14 16:59:58,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-14 16:59:58,257 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-12-14 16:59:58,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-12-14 16:59:58,304 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-14 16:59:58,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-14 16:59:58,377 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-12-14 16:59:58,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-12-14 16:59:58,427 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-14 16:59:58,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-14 16:59:58,470 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-12-14 16:59:58,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-12-14 16:59:58,531 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-12-14 16:59:58,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-12-14 16:59:58,589 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-12-14 16:59:58,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-12-14 16:59:58,644 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-14 16:59:58,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-14 16:59:58,770 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-14 16:59:58,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-14 16:59:58,861 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1038 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1038) |c_#memory_int|)) is different from true [2021-12-14 16:59:58,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-14 16:59:58,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2021-12-14 16:59:58,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2021-12-14 16:59:58,961 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-14 16:59:58,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 16:59:59,077 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1040 Int) (v_ArrVal_1041 Int) (v_ArrVal_1044 (Array Int Int))) (= (mod (select (store (store (select (store |c_#memory_int| |c_ULTIMATE.start_aws_array_list_init_dynamic_~#allocation_size~0#1.base| v_ArrVal_1044) |c_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.base|) (+ |c_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.offset| 24) v_ArrVal_1040) |c_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.offset| v_ArrVal_1041) (+ |c_ULTIMATE.start_aws_array_list_init_dynamic_~list#1.offset| 8)) 18446744073709551616) 0)) is different from false [2021-12-14 16:59:59,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:59:59,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982904434] [2021-12-14 16:59:59,079 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 16:59:59,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746657996] [2021-12-14 16:59:59,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746657996] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 16:59:59,080 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-14 16:59:59,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2021-12-14 16:59:59,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381033182] [2021-12-14 16:59:59,081 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-14 16:59:59,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-14 16:59:59,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:59:59,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-14 16:59:59,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1079, Unknown=2, NotChecked=134, Total=1332 [2021-12-14 16:59:59,082 INFO L87 Difference]: Start difference. First operand 157 states and 190 transitions. Second operand has 35 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 34 states have internal predecessors, (51), 5 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-14 16:59:59,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:59:59,610 INFO L93 Difference]: Finished difference Result 265 states and 333 transitions. [2021-12-14 16:59:59,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-14 16:59:59,611 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 34 states have internal predecessors, (51), 5 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 82 [2021-12-14 16:59:59,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:59:59,613 INFO L225 Difference]: With dead ends: 265 [2021-12-14 16:59:59,613 INFO L226 Difference]: Without dead ends: 206 [2021-12-14 16:59:59,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 44 SyntacticMatches, 12 SemanticMatches, 39 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=138, Invalid=1350, Unknown=2, NotChecked=150, Total=1640 [2021-12-14 16:59:59,615 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 91 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 564 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 16:59:59,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 587 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 483 Invalid, 0 Unknown, 564 Unchecked, 0.4s Time] [2021-12-14 16:59:59,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-12-14 16:59:59,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 176. [2021-12-14 16:59:59,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 121 states have (on average 1.1570247933884297) internal successors, (140), 124 states have internal predecessors, (140), 36 states have call successors, (36), 17 states have call predecessors, (36), 18 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2021-12-14 16:59:59,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 211 transitions. [2021-12-14 16:59:59,639 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 211 transitions. Word has length 82 [2021-12-14 16:59:59,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:59:59,640 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 211 transitions. [2021-12-14 16:59:59,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 34 states have internal predecessors, (51), 5 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-14 16:59:59,640 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 211 transitions. [2021-12-14 16:59:59,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-14 16:59:59,641 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:59:59,641 INFO L514 BasicCegarLoop]: trace histogram [23, 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] [2021-12-14 16:59:59,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-14 16:59:59,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:59:59,859 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:59:59,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:59:59,860 INFO L85 PathProgramCache]: Analyzing trace with hash -34254185, now seen corresponding path program 5 times [2021-12-14 16:59:59,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:59:59,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502141426] [2021-12-14 16:59:59,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:59:59,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:59:59,950 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 16:59:59,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [564481446] [2021-12-14 16:59:59,950 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-14 16:59:59,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 16:59:59,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:59:59,952 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) [2021-12-14 16:59:59,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process