./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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_swap_contents_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 877e83a63a602219ce02028b5212cf6c29aa8f33a031ee39d52c3c671213dc91 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:14:08,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:14:08,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:14:08,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:14:08,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:14:08,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:14:08,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:14:08,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:14:08,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:14:08,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:14:08,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:14:08,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:14:08,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:14:08,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:14:08,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:14:08,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:14:08,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:14:08,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:14:08,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:14:08,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:14:08,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:14:08,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:14:08,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:14:08,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:14:08,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:14:08,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:14:08,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:14:08,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:14:08,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:14:08,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:14:08,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:14:08,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:14:08,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:14:08,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:14:08,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:14:08,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:14:08,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:14:08,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:14:08,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:14:08,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:14:08,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:14:08,854 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:14:08,871 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:14:08,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:14:08,872 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:14:08,872 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:14:08,873 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:14:08,873 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:14:08,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:14:08,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:14:08,874 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:14:08,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:14:08,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:14:08,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:14:08,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:14:08,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:14:08,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:14:08,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:14:08,875 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:14:08,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:14:08,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:14:08,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:14:08,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:14:08,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:14:08,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:14:08,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:14:08,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:14:08,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:14:08,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:14:08,877 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:14:08,877 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:14:08,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:14:08,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:14:08,877 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 877e83a63a602219ce02028b5212cf6c29aa8f33a031ee39d52c3c671213dc91 [2021-12-16 03:14:09,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:14:09,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:14:09,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:14:09,116 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:14:09,117 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:14:09,117 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i [2021-12-16 03:14:09,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48da34e4b/4407d21b0bf642a692b8e793bed71f31/FLAG0c1ec2be6 [2021-12-16 03:14:09,801 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:14:09,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i [2021-12-16 03:14:09,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48da34e4b/4407d21b0bf642a692b8e793bed71f31/FLAG0c1ec2be6 [2021-12-16 03:14:10,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48da34e4b/4407d21b0bf642a692b8e793bed71f31 [2021-12-16 03:14:10,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:14:10,168 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:14:10,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:14:10,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:14:10,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:14:10,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:14:10" (1/1) ... [2021-12-16 03:14:10,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43bfda7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:14:10, skipping insertion in model container [2021-12-16 03:14:10,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:14:10" (1/1) ... [2021-12-16 03:14:10,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:14:10,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:14:10,428 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_swap_contents_harness.i[4502,4515] [2021-12-16 03:14:10,433 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_swap_contents_harness.i[4562,4575] [2021-12-16 03:14:10,846 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:14:10,883 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:10,886 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:10,886 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:10,886 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:10,887 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:10,901 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:10,902 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:10,904 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:10,904 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:10,906 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:10,907 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:10,908 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:10,908 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:11,100 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:14:11,103 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:14:11,104 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:14:11,107 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:14:11,110 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:14:11,110 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:14:11,111 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:14:11,113 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:14:11,114 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:14:11,114 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:14:11,206 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:11,210 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:11,238 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:14:11,260 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:14:11,277 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_swap_contents_harness.i[4502,4515] [2021-12-16 03:14:11,283 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_swap_contents_harness.i[4562,4575] [2021-12-16 03:14:11,311 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:14:11,322 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:11,343 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:11,344 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:11,345 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:11,345 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:11,348 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:11,349 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:11,349 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:11,349 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:11,350 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:11,350 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:11,350 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:11,350 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:11,366 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:14:11,417 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:14:11,436 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:14:11,440 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:14:11,440 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:14:11,441 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:14:11,441 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:14:11,442 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:14:11,442 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:14:11,443 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:14:11,471 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:11,486 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:14:11,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:14:11,639 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:14:11,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:14:11 WrapperNode [2021-12-16 03:14:11,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:14:11,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:14:11,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:14:11,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:14:11,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:14:11" (1/1) ... [2021-12-16 03:14:11,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:14:11" (1/1) ... [2021-12-16 03:14:11,774 INFO L137 Inliner]: procedures = 690, calls = 1715, calls flagged for inlining = 51, calls inlined = 7, statements flattened = 681 [2021-12-16 03:14:11,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:14:11,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:14:11,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:14:11,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:14:11,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:14:11" (1/1) ... [2021-12-16 03:14:11,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:14:11" (1/1) ... [2021-12-16 03:14:11,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:14:11" (1/1) ... [2021-12-16 03:14:11,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:14:11" (1/1) ... [2021-12-16 03:14:11,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:14:11" (1/1) ... [2021-12-16 03:14:11,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:14:11" (1/1) ... [2021-12-16 03:14:11,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:14:11" (1/1) ... [2021-12-16 03:14:11,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:14:11,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:14:11,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:14:11,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:14:11,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:14:11" (1/1) ... [2021-12-16 03:14:11,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:14:11,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:14:11,902 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) [2021-12-16 03:14:11,930 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 [2021-12-16 03:14:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:14:11,960 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-16 03:14:11,960 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-16 03:14:11,961 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-16 03:14:11,961 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-16 03:14:11,961 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-16 03:14:11,962 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-16 03:14:11,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:14:11,962 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-16 03:14:11,962 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-16 03:14:11,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 03:14:11,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 03:14:11,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:14:11,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:14:11,963 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-12-16 03:14:11,963 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-12-16 03:14:11,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 03:14:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:14:11,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:14:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-16 03:14:11,964 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-16 03:14:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-16 03:14:11,965 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-16 03:14:11,965 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-16 03:14:11,965 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-16 03:14:11,965 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 03:14:11,965 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 03:14:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:14:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:14:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:14:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-16 03:14:11,966 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-16 03:14:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-16 03:14:11,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-16 03:14:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:14:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2021-12-16 03:14:11,967 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2021-12-16 03:14:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-16 03:14:11,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-16 03:14:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:14:12,214 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:14:12,215 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:14:12,941 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:14:12,948 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:14:12,948 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 03:14:12,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:14:12 BoogieIcfgContainer [2021-12-16 03:14:12,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:14:12,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:14:12,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:14:12,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:14:12,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:14:10" (1/3) ... [2021-12-16 03:14:12,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6a6bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:14:12, skipping insertion in model container [2021-12-16 03:14:12,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:14:11" (2/3) ... [2021-12-16 03:14:12,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6a6bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:14:12, skipping insertion in model container [2021-12-16 03:14:12,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:14:12" (3/3) ... [2021-12-16 03:14:12,955 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_swap_contents_harness.i [2021-12-16 03:14:12,974 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:14:12,974 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:14:13,016 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:14:13,023 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 [2021-12-16 03:14:13,023 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:14:13,046 INFO L276 IsEmpty]: Start isEmpty. Operand has 160 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 93 states have internal predecessors, (107), 52 states have call successors, (52), 14 states have call predecessors, (52), 14 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-16 03:14:13,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-16 03:14:13,062 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:14:13,062 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:14:13,063 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:14:13,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:14:13,066 INFO L85 PathProgramCache]: Analyzing trace with hash -853348587, now seen corresponding path program 1 times [2021-12-16 03:14:13,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:14:13,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507408744] [2021-12-16 03:14:13,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:14:13,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:14:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:14:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:14:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:14:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:14:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:14:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-16 03:14:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 03:14:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 03:14:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:14:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:14:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:14:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:14:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 03:14:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 03:14:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 03:14:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 03:14:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 03:14:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 03:14:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 03:14:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-16 03:14:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 03:14:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 03:14:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-16 03:14:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 03:14:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-16 03:14:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 03:14:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-16 03:14:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-16 03:14:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-16 03:14:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-16 03:14:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:13,837 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 603 trivial. 0 not checked. [2021-12-16 03:14:13,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:14:13,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507408744] [2021-12-16 03:14:13,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507408744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:14:13,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:14:13,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:14:13,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757899873] [2021-12-16 03:14:13,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:14:13,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:14:13,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:14:13,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:14:13,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:14:13,865 INFO L87 Difference]: Start difference. First operand has 160 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 93 states have internal predecessors, (107), 52 states have call successors, (52), 14 states have call predecessors, (52), 14 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-16 03:14:15,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:14:15,179 INFO L93 Difference]: Finished difference Result 332 states and 486 transitions. [2021-12-16 03:14:15,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:14:15,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 174 [2021-12-16 03:14:15,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:14:15,188 INFO L225 Difference]: With dead ends: 332 [2021-12-16 03:14:15,188 INFO L226 Difference]: Without dead ends: 171 [2021-12-16 03:14:15,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:14:15,198 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 66 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:14:15,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 286 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 03:14:15,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-12-16 03:14:15,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 155. [2021-12-16 03:14:15,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 88 states have (on average 1.1477272727272727) internal successors, (101), 89 states have internal predecessors, (101), 52 states have call successors, (52), 14 states have call predecessors, (52), 14 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-12-16 03:14:15,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 204 transitions. [2021-12-16 03:14:15,267 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 204 transitions. Word has length 174 [2021-12-16 03:14:15,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:14:15,267 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 204 transitions. [2021-12-16 03:14:15,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-16 03:14:15,269 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 204 transitions. [2021-12-16 03:14:15,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-16 03:14:15,278 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:14:15,278 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:14:15,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:14:15,279 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:14:15,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:14:15,279 INFO L85 PathProgramCache]: Analyzing trace with hash 179931383, now seen corresponding path program 1 times [2021-12-16 03:14:15,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:14:15,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940012221] [2021-12-16 03:14:15,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:14:15,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:14:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:14:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:14:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:14:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:14:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:14:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-16 03:14:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 03:14:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 03:14:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:14:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:14:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:14:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:14:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 03:14:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 03:14:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 03:14:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 03:14:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 03:14:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 03:14:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 03:14:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-16 03:14:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 03:14:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 03:14:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-16 03:14:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 03:14:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-16 03:14:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 03:14:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-16 03:14:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-16 03:14:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-16 03:14:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-16 03:14:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:15,689 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2021-12-16 03:14:15,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:14:15,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940012221] [2021-12-16 03:14:15,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940012221] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:14:15,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842872749] [2021-12-16 03:14:15,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:14:15,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:14:15,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:14:15,691 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) [2021-12-16 03:14:15,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 03:14:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:16,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 2619 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 03:14:16,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:14:16,346 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2021-12-16 03:14:16,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:14:16,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842872749] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:14:16,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:14:16,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-12-16 03:14:16,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512652390] [2021-12-16 03:14:16,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:14:16,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:14:16,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:14:16,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:14:16,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:14:16,349 INFO L87 Difference]: Start difference. First operand 155 states and 204 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-16 03:14:16,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:14:16,880 INFO L93 Difference]: Finished difference Result 305 states and 406 transitions. [2021-12-16 03:14:16,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:14:16,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 174 [2021-12-16 03:14:16,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:14:16,882 INFO L225 Difference]: With dead ends: 305 [2021-12-16 03:14:16,883 INFO L226 Difference]: Without dead ends: 157 [2021-12-16 03:14:16,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-12-16 03:14:16,884 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 194 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 03:14:16,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 570 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 03:14:16,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-16 03:14:16,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-12-16 03:14:16,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 89 states have (on average 1.146067415730337) internal successors, (102), 91 states have internal predecessors, (102), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (57), 51 states have call predecessors, (57), 51 states have call successors, (57) [2021-12-16 03:14:16,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 211 transitions. [2021-12-16 03:14:16,907 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 211 transitions. Word has length 174 [2021-12-16 03:14:16,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:14:16,907 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 211 transitions. [2021-12-16 03:14:16,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-16 03:14:16,907 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 211 transitions. [2021-12-16 03:14:16,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-16 03:14:16,909 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:14:16,909 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:14:16,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-16 03:14:17,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:14:17,140 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:14:17,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:14:17,140 INFO L85 PathProgramCache]: Analyzing trace with hash 432837413, now seen corresponding path program 1 times [2021-12-16 03:14:17,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:14:17,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167693930] [2021-12-16 03:14:17,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:14:17,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:14:17,242 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:14:17,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1175568758] [2021-12-16 03:14:17,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:14:17,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:14:17,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:14:17,246 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) [2021-12-16 03:14:17,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 03:14:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:14:17,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 2760 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 03:14:17,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:14:17,969 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-12-16 03:14:17,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:14:17,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:14:17,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167693930] [2021-12-16 03:14:17,970 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:14:17,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175568758] [2021-12-16 03:14:17,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175568758] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:14:17,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:14:17,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:14:17,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360055686] [2021-12-16 03:14:17,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:14:17,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:14:17,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:14:17,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:14:17,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:14:17,972 INFO L87 Difference]: Start difference. First operand 157 states and 211 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-16 03:14:19,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:14:19,476 INFO L93 Difference]: Finished difference Result 270 states and 364 transitions. [2021-12-16 03:14:19,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:14:19,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 189 [2021-12-16 03:14:19,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:14:19,480 INFO L225 Difference]: With dead ends: 270 [2021-12-16 03:14:19,480 INFO L226 Difference]: Without dead ends: 157 [2021-12-16 03:14:19,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:14:19,481 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 192 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 03:14:19,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 570 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 03:14:19,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-16 03:14:19,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-12-16 03:14:19,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 89 states have (on average 1.146067415730337) internal successors, (102), 91 states have internal predecessors, (102), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (55), 51 states have call predecessors, (55), 51 states have call successors, (55) [2021-12-16 03:14:19,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 209 transitions. [2021-12-16 03:14:19,496 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 209 transitions. Word has length 189 [2021-12-16 03:14:19,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:14:19,496 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 209 transitions. [2021-12-16 03:14:19,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-16 03:14:19,497 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 209 transitions. [2021-12-16 03:14:19,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-12-16 03:14:19,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:14:19,498 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:14:19,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-16 03:14:19,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-16 03:14:19,718 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:14:19,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:14:19,719 INFO L85 PathProgramCache]: Analyzing trace with hash 229772645, now seen corresponding path program 2 times [2021-12-16 03:14:19,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:14:19,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343922368] [2021-12-16 03:14:19,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:14:19,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:14:19,757 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:14:19,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [433484925] [2021-12-16 03:14:19,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:14:19,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:14:19,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:14:19,759 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) [2021-12-16 03:14:19,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 03:14:20,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:14:20,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:14:20,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 2901 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 03:14:20,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:14:21,183 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2021-12-16 03:14:21,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:14:21,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:14:21,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343922368] [2021-12-16 03:14:21,184 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:14:21,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433484925] [2021-12-16 03:14:21,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433484925] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:14:21,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:14:21,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 03:14:21,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460508890] [2021-12-16 03:14:21,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:14:21,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:14:21,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:14:21,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:14:21,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:14:21,187 INFO L87 Difference]: Start difference. First operand 157 states and 209 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-16 03:14:21,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:14:21,899 INFO L93 Difference]: Finished difference Result 239 states and 315 transitions. [2021-12-16 03:14:21,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:14:21,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) Word has length 204 [2021-12-16 03:14:21,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:14:21,903 INFO L225 Difference]: With dead ends: 239 [2021-12-16 03:14:21,903 INFO L226 Difference]: Without dead ends: 157 [2021-12-16 03:14:21,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:14:21,904 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 190 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 03:14:21,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 707 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 03:14:21,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-16 03:14:21,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-12-16 03:14:21,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 89 states have (on average 1.146067415730337) internal successors, (102), 91 states have internal predecessors, (102), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (53), 51 states have call predecessors, (53), 51 states have call successors, (53) [2021-12-16 03:14:21,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 207 transitions. [2021-12-16 03:14:21,918 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 207 transitions. Word has length 204 [2021-12-16 03:14:21,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:14:21,919 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 207 transitions. [2021-12-16 03:14:21,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-16 03:14:21,919 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 207 transitions. [2021-12-16 03:14:21,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-12-16 03:14:21,921 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:14:21,921 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:14:21,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 03:14:22,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:14:22,135 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:14:22,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:14:22,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1913799685, now seen corresponding path program 3 times [2021-12-16 03:14:22,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:14:22,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998438363] [2021-12-16 03:14:22,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:14:22,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:14:22,186 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:14:22,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [563442367] [2021-12-16 03:14:22,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 03:14:22,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:14:22,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:14:22,200 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) [2021-12-16 03:14:22,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 03:14:26,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-16 03:14:26,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:14:26,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 2208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-16 03:14:26,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:14:27,299 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2021-12-16 03:14:27,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:14:27,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:14:27,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998438363] [2021-12-16 03:14:27,300 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:14:27,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563442367] [2021-12-16 03:14:27,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563442367] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:14:27,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:14:27,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:14:27,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330436691] [2021-12-16 03:14:27,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:14:27,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:14:27,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:14:27,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:14:27,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:14:27,301 INFO L87 Difference]: Start difference. First operand 157 states and 207 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-12-16 03:14:27,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:14:27,574 INFO L93 Difference]: Finished difference Result 232 states and 303 transitions. [2021-12-16 03:14:27,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:14:27,579 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 234 [2021-12-16 03:14:27,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:14:27,580 INFO L225 Difference]: With dead ends: 232 [2021-12-16 03:14:27,580 INFO L226 Difference]: Without dead ends: 157 [2021-12-16 03:14:27,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:14:27,581 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 2 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 03:14:27,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 881 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 03:14:27,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-16 03:14:27,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-12-16 03:14:27,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 89 states have (on average 1.146067415730337) internal successors, (102), 91 states have internal predecessors, (102), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2021-12-16 03:14:27,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 206 transitions. [2021-12-16 03:14:27,611 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 206 transitions. Word has length 234 [2021-12-16 03:14:27,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:14:27,612 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 206 transitions. [2021-12-16 03:14:27,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-12-16 03:14:27,612 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 206 transitions. [2021-12-16 03:14:27,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-12-16 03:14:27,614 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:14:27,614 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:14:27,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 03:14:27,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:14:27,833 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:14:27,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:14:27,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1463432363, now seen corresponding path program 1 times [2021-12-16 03:14:27,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:14:27,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862781707] [2021-12-16 03:14:27,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:14:27,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:14:27,890 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:14:27,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [468539518] [2021-12-16 03:14:27,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:14:27,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:14:27,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:14:27,899 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) [2021-12-16 03:14:27,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process