./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_copy_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 3a98a47bac7562a35bba31573ebdfd704a9d27baca1b439deea796ac12a0961b --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:22:30,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:22:30,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:22:30,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:22:30,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:22:30,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:22:30,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:22:30,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:22:30,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:22:30,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:22:30,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:22:30,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:22:30,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:22:30,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:22:30,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:22:30,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:22:30,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:22:30,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:22:30,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:22:30,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:22:30,126 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:22:30,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:22:30,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:22:30,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:22:30,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:22:30,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:22:30,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:22:30,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:22:30,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:22:30,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:22:30,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:22:30,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:22:30,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:22:30,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:22:30,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:22:30,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:22:30,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:22:30,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:22:30,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:22:30,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:22:30,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:22:30,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:22:30,147 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 09:22:30,171 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:22:30,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:22:30,172 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:22:30,172 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:22:30,173 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:22:30,173 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:22:30,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:22:30,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:22:30,174 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:22:30,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:22:30,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:22:30,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:22:30,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:22:30,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:22:30,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:22:30,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:22:30,183 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:22:30,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:22:30,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:22:30,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:22:30,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:22:30,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:22:30,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:22:30,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:22:30,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:22:30,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:22:30,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:22:30,185 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:22:30,185 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:22:30,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:22:30,186 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a98a47bac7562a35bba31573ebdfd704a9d27baca1b439deea796ac12a0961b [2022-07-21 09:22:30,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:22:30,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:22:30,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:22:30,478 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:22:30,479 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:22:30,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i [2022-07-21 09:22:30,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acae9ec5d/2d1d5d9aa72e406cb3be39888c13fc92/FLAG447d38e95 [2022-07-21 09:22:31,155 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:22:31,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i [2022-07-21 09:22:31,182 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acae9ec5d/2d1d5d9aa72e406cb3be39888c13fc92/FLAG447d38e95 [2022-07-21 09:22:31,567 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acae9ec5d/2d1d5d9aa72e406cb3be39888c13fc92 [2022-07-21 09:22:31,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:22:31,570 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:22:31,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:22:31,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:22:31,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:22:31,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:22:31" (1/1) ... [2022-07-21 09:22:31,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d3230ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:31, skipping insertion in model container [2022-07-21 09:22:31,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:22:31" (1/1) ... [2022-07-21 09:22:31,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:22:31,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:22:31,845 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_copy_harness.i[4493,4506] [2022-07-21 09:22:31,850 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_copy_harness.i[4553,4566] [2022-07-21 09:22:32,345 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:22:32,397 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,399 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,399 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,400 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,402 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,413 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,413 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,414 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,414 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,415 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,416 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,416 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,416 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,604 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:22:32,604 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:22:32,605 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:22:32,606 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:22:32,606 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:22:32,607 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:22:32,607 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:22:32,608 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:22:32,609 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:22:32,610 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:22:32,675 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,675 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,677 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,680 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:22:32,740 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:22:32,748 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_copy_harness.i[4493,4506] [2022-07-21 09:22:32,748 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_copy_harness.i[4553,4566] [2022-07-21 09:22:32,794 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:22:32,802 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,802 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,803 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,803 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,803 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,821 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,821 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,823 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,823 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,826 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,826 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,827 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,827 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,866 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:22:32,866 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:22:32,867 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:22:32,868 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:22:32,869 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:22:32,869 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:22:32,870 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:22:32,870 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:22:32,870 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:22:32,871 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:22:32,887 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,890 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,890 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,893 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:22:32,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:22:33,158 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:22:33,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:33 WrapperNode [2022-07-21 09:22:33,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:22:33,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:22:33,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:22:33,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:22:33,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:33" (1/1) ... [2022-07-21 09:22:33,234 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:33" (1/1) ... [2022-07-21 09:22:33,295 INFO L137 Inliner]: procedures = 691, calls = 1673, calls flagged for inlining = 52, calls inlined = 7, statements flattened = 695 [2022-07-21 09:22:33,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:22:33,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:22:33,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:22:33,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:22:33,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:33" (1/1) ... [2022-07-21 09:22:33,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:33" (1/1) ... [2022-07-21 09:22:33,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:33" (1/1) ... [2022-07-21 09:22:33,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:33" (1/1) ... [2022-07-21 09:22:33,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:33" (1/1) ... [2022-07-21 09:22:33,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:33" (1/1) ... [2022-07-21 09:22:33,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:33" (1/1) ... [2022-07-21 09:22:33,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:22:33,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:22:33,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:22:33,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:22:33,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:33" (1/1) ... [2022-07-21 09:22:33,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:22:33,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:22:33,391 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 09:22:33,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 09:22:33,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:22:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-21 09:22:33,429 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-21 09:22:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-21 09:22:33,429 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-21 09:22:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-21 09:22:33,429 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-21 09:22:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-07-21 09:22:33,429 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-07-21 09:22:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:22:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-21 09:22:33,430 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-21 09:22:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 09:22:33,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 09:22:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:22:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:22:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 09:22:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-21 09:22:33,431 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-21 09:22:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:22:33,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:22:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-21 09:22:33,432 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-21 09:22:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-21 09:22:33,432 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-21 09:22:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-21 09:22:33,432 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-21 09:22:33,433 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-07-21 09:22:33,433 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-07-21 09:22:33,433 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 09:22:33,433 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 09:22:33,433 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-21 09:22:33,433 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-21 09:22:33,433 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-07-21 09:22:33,433 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-07-21 09:22:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:22:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 09:22:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 09:22:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-21 09:22:33,434 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-21 09:22:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-21 09:22:33,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-21 09:22:33,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:22:33,435 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-21 09:22:33,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-21 09:22:33,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:22:33,694 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:22:33,696 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:22:34,195 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:22:34,200 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:22:34,200 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 09:22:34,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:22:34 BoogieIcfgContainer [2022-07-21 09:22:34,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:22:34,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:22:34,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:22:34,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:22:34,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:22:31" (1/3) ... [2022-07-21 09:22:34,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2549a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:22:34, skipping insertion in model container [2022-07-21 09:22:34,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:22:33" (2/3) ... [2022-07-21 09:22:34,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2549a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:22:34, skipping insertion in model container [2022-07-21 09:22:34,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:22:34" (3/3) ... [2022-07-21 09:22:34,207 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_copy_harness.i [2022-07-21 09:22:34,230 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:22:34,230 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:22:34,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:22:34,291 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3dcb23f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4a7b2e32 [2022-07-21 09:22:34,292 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 09:22:34,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 119 states have (on average 1.184873949579832) internal successors, (141), 120 states have internal predecessors, (141), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-07-21 09:22:34,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 09:22:34,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:22:34,314 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 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] [2022-07-21 09:22:34,315 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:22:34,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:22:34,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1428143905, now seen corresponding path program 1 times [2022-07-21 09:22:34,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:22:34,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28100109] [2022-07-21 09:22:34,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:22:34,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:22:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:34,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:22:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:34,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:22:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:34,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:22:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:34,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:22:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:34,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:22:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:34,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:22:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:34,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:22:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:34,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 09:22:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:34,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:22:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:34,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:22:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:34,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:22:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:35,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:22:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:35,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 09:22:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:35,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 09:22:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:35,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:22:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:35,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 09:22:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:35,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 09:22:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:35,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 09:22:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:35,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 09:22:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:35,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 09:22:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:35,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 09:22:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:35,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 09:22:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:35,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-21 09:22:35,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:22:35,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28100109] [2022-07-21 09:22:35,101 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-21 09:22:35,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525675421] [2022-07-21 09:22:35,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:22:35,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:22:35,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:22:35,103 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:22:35,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 09:22:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:35,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 2347 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 09:22:35,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:22:35,616 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-07-21 09:22:35,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:22:35,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525675421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:22:35,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:22:35,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:22:35,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724976867] [2022-07-21 09:22:35,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:22:35,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:22:35,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:22:35,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:22:35,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:22:35,647 INFO L87 Difference]: Start difference. First operand has 209 states, 119 states have (on average 1.184873949579832) internal successors, (141), 120 states have internal predecessors, (141), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-21 09:22:35,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:22:35,995 INFO L93 Difference]: Finished difference Result 416 states and 618 transitions. [2022-07-21 09:22:35,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:22:35,997 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 145 [2022-07-21 09:22:35,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:22:36,005 INFO L225 Difference]: With dead ends: 416 [2022-07-21 09:22:36,005 INFO L226 Difference]: Without dead ends: 206 [2022-07-21 09:22:36,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:22:36,011 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 276 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:22:36,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 778 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 09:22:36,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-07-21 09:22:36,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2022-07-21 09:22:36,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 116 states have (on average 1.1724137931034482) internal successors, (136), 118 states have internal predecessors, (136), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (82), 70 states have call predecessors, (82), 70 states have call successors, (82) [2022-07-21 09:22:36,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 289 transitions. [2022-07-21 09:22:36,066 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 289 transitions. Word has length 145 [2022-07-21 09:22:36,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:22:36,066 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 289 transitions. [2022-07-21 09:22:36,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-21 09:22:36,067 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 289 transitions. [2022-07-21 09:22:36,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-21 09:22:36,069 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:22:36,069 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 4, 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] [2022-07-21 09:22:36,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 09:22:36,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-21 09:22:36,289 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:22:36,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:22:36,290 INFO L85 PathProgramCache]: Analyzing trace with hash 484121766, now seen corresponding path program 1 times [2022-07-21 09:22:36,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:22:36,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658002707] [2022-07-21 09:22:36,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:22:36,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:22:36,349 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:22:36,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68659310] [2022-07-21 09:22:36,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:22:36,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:22:36,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:22:36,351 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:22:36,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 09:22:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:36,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 2483 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:22:36,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:22:36,733 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-07-21 09:22:36,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:22:36,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:22:36,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658002707] [2022-07-21 09:22:36,747 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:22:36,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68659310] [2022-07-21 09:22:36,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68659310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:22:36,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:22:36,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:22:36,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424761870] [2022-07-21 09:22:36,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:22:36,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:22:36,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:22:36,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:22:36,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:22:36,750 INFO L87 Difference]: Start difference. First operand 206 states and 289 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-21 09:22:36,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:22:36,777 INFO L93 Difference]: Finished difference Result 410 states and 588 transitions. [2022-07-21 09:22:36,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:22:36,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 160 [2022-07-21 09:22:36,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:22:36,780 INFO L225 Difference]: With dead ends: 410 [2022-07-21 09:22:36,780 INFO L226 Difference]: Without dead ends: 211 [2022-07-21 09:22:36,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:22:36,782 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 10 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:22:36,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 815 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:22:36,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-07-21 09:22:36,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2022-07-21 09:22:36,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 120 states have internal predecessors, (138), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (82), 70 states have call predecessors, (82), 70 states have call successors, (82) [2022-07-21 09:22:36,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 291 transitions. [2022-07-21 09:22:36,796 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 291 transitions. Word has length 160 [2022-07-21 09:22:36,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:22:36,796 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 291 transitions. [2022-07-21 09:22:36,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-21 09:22:36,797 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 291 transitions. [2022-07-21 09:22:36,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-21 09:22:36,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:22:36,798 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 4, 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] [2022-07-21 09:22:36,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 09:22:37,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-21 09:22:37,019 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:22:37,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:22:37,019 INFO L85 PathProgramCache]: Analyzing trace with hash -2088842844, now seen corresponding path program 1 times [2022-07-21 09:22:37,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:22:37,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200620068] [2022-07-21 09:22:37,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:22:37,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:22:37,061 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:22:37,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2006585532] [2022-07-21 09:22:37,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:22:37,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:22:37,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:22:37,063 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:22:37,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 09:22:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:37,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 2488 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 09:22:37,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:22:37,497 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-07-21 09:22:37,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:22:37,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:22:37,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200620068] [2022-07-21 09:22:37,498 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:22:37,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006585532] [2022-07-21 09:22:37,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006585532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:22:37,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:22:37,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:22:37,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636409268] [2022-07-21 09:22:37,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:22:37,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:22:37,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:22:37,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:22:37,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:22:37,500 INFO L87 Difference]: Start difference. First operand 208 states and 291 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-21 09:22:37,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:22:37,765 INFO L93 Difference]: Finished difference Result 383 states and 533 transitions. [2022-07-21 09:22:37,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:22:37,766 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 160 [2022-07-21 09:22:37,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:22:37,767 INFO L225 Difference]: With dead ends: 383 [2022-07-21 09:22:37,767 INFO L226 Difference]: Without dead ends: 208 [2022-07-21 09:22:37,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:22:37,769 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 270 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:22:37,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 769 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:22:37,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-21 09:22:37,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-07-21 09:22:37,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 120 states have internal predecessors, (138), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (80), 70 states have call predecessors, (80), 70 states have call successors, (80) [2022-07-21 09:22:37,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 289 transitions. [2022-07-21 09:22:37,801 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 289 transitions. Word has length 160 [2022-07-21 09:22:37,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:22:37,802 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 289 transitions. [2022-07-21 09:22:37,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-21 09:22:37,802 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 289 transitions. [2022-07-21 09:22:37,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-21 09:22:37,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:22:37,803 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 09:22:37,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 09:22:38,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:22:38,004 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:22:38,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:22:38,004 INFO L85 PathProgramCache]: Analyzing trace with hash 2066938953, now seen corresponding path program 2 times [2022-07-21 09:22:38,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:22:38,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038248194] [2022-07-21 09:22:38,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:22:38,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:22:38,046 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:22:38,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2040642489] [2022-07-21 09:22:38,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:22:38,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:22:38,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:22:38,048 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:22:38,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 09:22:38,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 09:22:38,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:22:38,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 09:22:38,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:22:38,409 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-07-21 09:22:38,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:22:38,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:22:38,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038248194] [2022-07-21 09:22:38,409 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:22:38,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040642489] [2022-07-21 09:22:38,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040642489] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:22:38,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:22:38,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:22:38,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805930872] [2022-07-21 09:22:38,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:22:38,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:22:38,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:22:38,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:22:38,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:22:38,412 INFO L87 Difference]: Start difference. First operand 208 states and 289 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-21 09:22:38,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:22:38,450 INFO L93 Difference]: Finished difference Result 269 states and 367 transitions. [2022-07-21 09:22:38,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:22:38,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 175 [2022-07-21 09:22:38,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:22:38,457 INFO L225 Difference]: With dead ends: 269 [2022-07-21 09:22:38,457 INFO L226 Difference]: Without dead ends: 213 [2022-07-21 09:22:38,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:22:38,459 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 2 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:22:38,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1085 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:22:38,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-07-21 09:22:38,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-07-21 09:22:38,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 122 states have (on average 1.1639344262295082) internal successors, (142), 124 states have internal predecessors, (142), 71 states have call successors, (71), 17 states have call predecessors, (71), 19 states have return successors, (82), 71 states have call predecessors, (82), 70 states have call successors, (82) [2022-07-21 09:22:38,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 295 transitions. [2022-07-21 09:22:38,486 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 295 transitions. Word has length 175 [2022-07-21 09:22:38,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:22:38,487 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 295 transitions. [2022-07-21 09:22:38,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-21 09:22:38,488 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 295 transitions. [2022-07-21 09:22:38,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-21 09:22:38,489 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:22:38,489 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 09:22:38,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 09:22:38,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:22:38,709 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:22:38,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:22:38,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1798085459, now seen corresponding path program 1 times [2022-07-21 09:22:38,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:22:38,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123626996] [2022-07-21 09:22:38,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:22:38,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:22:38,763 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:22:38,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [658105905] [2022-07-21 09:22:38,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:22:38,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:22:38,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:22:38,772 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:22:38,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 09:22:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:39,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 2633 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 09:22:39,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:22:39,225 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-07-21 09:22:39,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:22:39,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:22:39,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123626996] [2022-07-21 09:22:39,225 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:22:39,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658105905] [2022-07-21 09:22:39,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658105905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:22:39,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:22:39,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 09:22:39,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698845527] [2022-07-21 09:22:39,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:22:39,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:22:39,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:22:39,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:22:39,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:22:39,227 INFO L87 Difference]: Start difference. First operand 213 states and 295 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-07-21 09:22:39,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:22:39,535 INFO L93 Difference]: Finished difference Result 382 states and 524 transitions. [2022-07-21 09:22:39,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:22:39,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 181 [2022-07-21 09:22:39,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:22:39,537 INFO L225 Difference]: With dead ends: 382 [2022-07-21 09:22:39,537 INFO L226 Difference]: Without dead ends: 213 [2022-07-21 09:22:39,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:22:39,538 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 305 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:22:39,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 914 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 09:22:39,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-07-21 09:22:39,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-07-21 09:22:39,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 122 states have (on average 1.1639344262295082) internal successors, (142), 124 states have internal predecessors, (142), 71 states have call successors, (71), 17 states have call predecessors, (71), 19 states have return successors, (77), 71 states have call predecessors, (77), 70 states have call successors, (77) [2022-07-21 09:22:39,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 290 transitions. [2022-07-21 09:22:39,558 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 290 transitions. Word has length 181 [2022-07-21 09:22:39,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:22:39,559 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 290 transitions. [2022-07-21 09:22:39,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-07-21 09:22:39,559 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 290 transitions. [2022-07-21 09:22:39,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-21 09:22:39,560 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:22:39,560 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 09:22:39,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 09:22:39,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:22:39,771 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:22:39,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:22:39,772 INFO L85 PathProgramCache]: Analyzing trace with hash -71678011, now seen corresponding path program 1 times [2022-07-21 09:22:39,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:22:39,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451488072] [2022-07-21 09:22:39,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:22:39,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:22:39,816 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:22:39,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1963764863] [2022-07-21 09:22:39,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:22:39,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:22:39,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:22:39,817 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:22:39,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 09:22:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:40,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 2787 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 09:22:40,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:22:40,310 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-07-21 09:22:40,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:22:40,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:22:40,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451488072] [2022-07-21 09:22:40,311 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:22:40,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963764863] [2022-07-21 09:22:40,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963764863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:22:40,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:22:40,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 09:22:40,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998980578] [2022-07-21 09:22:40,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:22:40,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:22:40,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:22:40,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:22:40,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:22:40,313 INFO L87 Difference]: Start difference. First operand 213 states and 290 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-21 09:22:40,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:22:40,604 INFO L93 Difference]: Finished difference Result 379 states and 509 transitions. [2022-07-21 09:22:40,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:22:40,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 195 [2022-07-21 09:22:40,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:22:40,606 INFO L225 Difference]: With dead ends: 379 [2022-07-21 09:22:40,606 INFO L226 Difference]: Without dead ends: 211 [2022-07-21 09:22:40,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:22:40,607 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 304 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:22:40,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 909 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 09:22:40,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-07-21 09:22:40,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2022-07-21 09:22:40,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 121 states have (on average 1.1570247933884297) internal successors, (140), 122 states have internal predecessors, (140), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (72), 71 states have call predecessors, (72), 70 states have call successors, (72) [2022-07-21 09:22:40,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 283 transitions. [2022-07-21 09:22:40,616 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 283 transitions. Word has length 195 [2022-07-21 09:22:40,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:22:40,616 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 283 transitions. [2022-07-21 09:22:40,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-21 09:22:40,616 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 283 transitions. [2022-07-21 09:22:40,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-07-21 09:22:40,621 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:22:40,621 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-21 09:22:40,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-21 09:22:40,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:22:40,835 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:22:40,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:22:40,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1712202978, now seen corresponding path program 1 times [2022-07-21 09:22:40,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:22:40,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580888058] [2022-07-21 09:22:40,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:22:40,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:22:40,887 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:22:40,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [196633002] [2022-07-21 09:22:40,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:22:40,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:22:40,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:22:40,889 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:22:40,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 09:22:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:41,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 2928 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 09:22:41,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:22:41,344 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2022-07-21 09:22:41,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:22:41,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:22:41,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580888058] [2022-07-21 09:22:41,345 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:22:41,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196633002] [2022-07-21 09:22:41,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196633002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:22:41,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:22:41,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:22:41,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413906462] [2022-07-21 09:22:41,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:22:41,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:22:41,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:22:41,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:22:41,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:22:41,346 INFO L87 Difference]: Start difference. First operand 211 states and 283 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2022-07-21 09:22:41,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:22:41,373 INFO L93 Difference]: Finished difference Result 269 states and 354 transitions. [2022-07-21 09:22:41,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:22:41,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) Word has length 210 [2022-07-21 09:22:41,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:22:41,375 INFO L225 Difference]: With dead ends: 269 [2022-07-21 09:22:41,375 INFO L226 Difference]: Without dead ends: 220 [2022-07-21 09:22:41,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:22:41,376 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 3 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:22:41,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1363 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:22:41,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-07-21 09:22:41,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 213. [2022-07-21 09:22:41,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 123 states have (on average 1.1544715447154472) internal successors, (142), 124 states have internal predecessors, (142), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (72), 71 states have call predecessors, (72), 70 states have call successors, (72) [2022-07-21 09:22:41,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 285 transitions. [2022-07-21 09:22:41,384 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 285 transitions. Word has length 210 [2022-07-21 09:22:41,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:22:41,384 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 285 transitions. [2022-07-21 09:22:41,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2022-07-21 09:22:41,385 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 285 transitions. [2022-07-21 09:22:41,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-21 09:22:41,386 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:22:41,386 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:22:41,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 09:22:41,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:22:41,599 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:22:41,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:22:41,600 INFO L85 PathProgramCache]: Analyzing trace with hash 870357412, now seen corresponding path program 1 times [2022-07-21 09:22:41,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:22:41,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591794184] [2022-07-21 09:22:41,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:22:41,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:22:41,650 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:22:41,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [213482083] [2022-07-21 09:22:41,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:22:41,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:22:41,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:22:41,652 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:22:41,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 09:22:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:22:42,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 3056 conjuncts, 114 conjunts are in the unsatisfiable core [2022-07-21 09:22:42,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:22:42,606 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_996 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_996))) (exists ((v_ArrVal_995 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_995) |c_#memory_$Pointer$.base|))) is different from true [2022-07-21 09:22:42,666 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:22:42,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-21 09:22:42,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-21 09:22:42,686 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:22:42,687 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-21 09:22:42,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-21 09:22:44,816 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_999 Int) (v_ArrVal_998 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_999))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_998))))) is different from true [2022-07-21 09:23:09,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:23:09,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-07-21 09:23:09,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:23:09,366 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-07-21 09:23:09,782 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-21 09:23:09,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-21 09:23:09,844 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 312 proven. 33 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-07-21 09:23:09,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:23:16,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:23:16,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591794184] [2022-07-21 09:23:16,411 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:23:16,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213482083] [2022-07-21 09:23:16,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213482083] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:23:16,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:23:16,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-07-21 09:23:16,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194437819] [2022-07-21 09:23:16,411 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:23:16,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-21 09:23:16,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:23:16,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-21 09:23:16,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1018, Unknown=12, NotChecked=130, Total=1260 [2022-07-21 09:23:16,413 INFO L87 Difference]: Start difference. First operand 213 states and 285 transitions. Second operand has 27 states, 24 states have (on average 3.8333333333333335) internal successors, (92), 25 states have internal predecessors, (92), 12 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (31), 11 states have call predecessors, (31), 12 states have call successors, (31) [2022-07-21 09:23:35,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:23:35,724 INFO L93 Difference]: Finished difference Result 432 states and 599 transitions. [2022-07-21 09:23:35,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-21 09:23:35,725 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 3.8333333333333335) internal successors, (92), 25 states have internal predecessors, (92), 12 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (31), 11 states have call predecessors, (31), 12 states have call successors, (31) Word has length 226 [2022-07-21 09:23:35,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:23:35,727 INFO L225 Difference]: With dead ends: 432 [2022-07-21 09:23:35,727 INFO L226 Difference]: Without dead ends: 252 [2022-07-21 09:23:35,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 302 SyntacticMatches, 15 SemanticMatches, 45 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 51.4s TimeCoverageRelationStatistics Valid=183, Invalid=1785, Unknown=20, NotChecked=174, Total=2162 [2022-07-21 09:23:35,729 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 97 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 1844 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 3629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1707 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:23:35,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 1829 Invalid, 3629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1844 Invalid, 0 Unknown, 1707 Unchecked, 1.0s Time] [2022-07-21 09:23:35,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-07-21 09:23:35,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 239. [2022-07-21 09:23:35,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 139 states have (on average 1.1510791366906474) internal successors, (160), 142 states have internal predecessors, (160), 76 states have call successors, (76), 19 states have call predecessors, (76), 23 states have return successors, (109), 77 states have call predecessors, (109), 75 states have call successors, (109) [2022-07-21 09:23:35,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 345 transitions. [2022-07-21 09:23:35,741 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 345 transitions. Word has length 226 [2022-07-21 09:23:35,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:23:35,744 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 345 transitions. [2022-07-21 09:23:35,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 3.8333333333333335) internal successors, (92), 25 states have internal predecessors, (92), 12 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (31), 11 states have call predecessors, (31), 12 states have call successors, (31) [2022-07-21 09:23:35,744 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 345 transitions. [2022-07-21 09:23:35,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-07-21 09:23:35,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:23:35,747 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2022-07-21 09:23:35,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 09:23:35,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-21 09:23:35,961 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:23:35,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:23:35,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1241589422, now seen corresponding path program 2 times [2022-07-21 09:23:35,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:23:35,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553322676] [2022-07-21 09:23:35,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:23:35,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:23:36,008 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:23:36,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1590700135] [2022-07-21 09:23:36,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:23:36,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:23:36,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:23:36,009 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:23:36,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 09:23:37,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:23:37,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:23:37,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 3060 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-21 09:23:37,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:23:37,944 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-07-21 09:23:37,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:23:37,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:23:37,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553322676] [2022-07-21 09:23:37,945 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:23:37,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590700135] [2022-07-21 09:23:37,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590700135] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:23:37,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:23:37,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 09:23:37,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806607995] [2022-07-21 09:23:37,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:23:37,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 09:23:37,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:23:37,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 09:23:37,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:23:37,949 INFO L87 Difference]: Start difference. First operand 239 states and 345 transitions. Second operand has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 9 states have internal predecessors, (82), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (29), 5 states have call predecessors, (29), 3 states have call successors, (29) [2022-07-21 09:23:38,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:23:38,197 INFO L93 Difference]: Finished difference Result 436 states and 638 transitions. [2022-07-21 09:23:38,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 09:23:38,197 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 9 states have internal predecessors, (82), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (29), 5 states have call predecessors, (29), 3 states have call successors, (29) Word has length 232 [2022-07-21 09:23:38,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:23:38,199 INFO L225 Difference]: With dead ends: 436 [2022-07-21 09:23:38,199 INFO L226 Difference]: Without dead ends: 246 [2022-07-21 09:23:38,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:23:38,200 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 11 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2912 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:23:38,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2912 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:23:38,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-07-21 09:23:38,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2022-07-21 09:23:38,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 145 states have (on average 1.1517241379310346) internal successors, (167), 149 states have internal predecessors, (167), 76 states have call successors, (76), 19 states have call predecessors, (76), 24 states have return successors, (120), 77 states have call predecessors, (120), 75 states have call successors, (120) [2022-07-21 09:23:38,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 363 transitions. [2022-07-21 09:23:38,211 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 363 transitions. Word has length 232 [2022-07-21 09:23:38,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:23:38,211 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 363 transitions. [2022-07-21 09:23:38,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 9 states have internal predecessors, (82), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (29), 5 states have call predecessors, (29), 3 states have call successors, (29) [2022-07-21 09:23:38,212 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 363 transitions. [2022-07-21 09:23:38,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-07-21 09:23:38,214 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:23:38,214 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-21 09:23:38,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 09:23:38,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:23:38,436 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:23:38,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:23:38,437 INFO L85 PathProgramCache]: Analyzing trace with hash 413253233, now seen corresponding path program 1 times [2022-07-21 09:23:38,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:23:38,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415551704] [2022-07-21 09:23:38,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:23:38,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:23:38,481 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:23:38,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26993166] [2022-07-21 09:23:38,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:23:38,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:23:38,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:23:38,482 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:23:38,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 09:23:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:23:38,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 3107 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-21 09:23:38,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:23:38,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-07-21 09:23:39,179 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 263 proven. 17 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-07-21 09:23:39,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:23:39,838 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 50 proven. 35 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2022-07-21 09:23:39,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:23:39,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415551704] [2022-07-21 09:23:39,838 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:23:39,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26993166] [2022-07-21 09:23:39,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26993166] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:23:39,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:23:39,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 26 [2022-07-21 09:23:39,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745453688] [2022-07-21 09:23:39,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:23:39,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:23:39,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:23:39,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:23:39,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:23:39,843 INFO L87 Difference]: Start difference. First operand 246 states and 363 transitions. Second operand has 26 states, 21 states have (on average 5.285714285714286) internal successors, (111), 19 states have internal predecessors, (111), 7 states have call successors, (40), 3 states have call predecessors, (40), 8 states have return successors, (42), 9 states have call predecessors, (42), 6 states have call successors, (42) [2022-07-21 09:23:40,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:23:40,559 INFO L93 Difference]: Finished difference Result 446 states and 655 transitions. [2022-07-21 09:23:40,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 09:23:40,560 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 5.285714285714286) internal successors, (111), 19 states have internal predecessors, (111), 7 states have call successors, (40), 3 states have call predecessors, (40), 8 states have return successors, (42), 9 states have call predecessors, (42), 6 states have call successors, (42) Word has length 250 [2022-07-21 09:23:40,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:23:40,561 INFO L225 Difference]: With dead ends: 446 [2022-07-21 09:23:40,561 INFO L226 Difference]: Without dead ends: 260 [2022-07-21 09:23:40,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 473 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2022-07-21 09:23:40,563 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 24 mSDsluCounter, 5030 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 5294 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:23:40,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 5294 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 09:23:40,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-07-21 09:23:40,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 246. [2022-07-21 09:23:40,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 145 states have (on average 1.1517241379310346) internal successors, (167), 149 states have internal predecessors, (167), 76 states have call successors, (76), 19 states have call predecessors, (76), 24 states have return successors, (118), 77 states have call predecessors, (118), 75 states have call successors, (118) [2022-07-21 09:23:40,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 361 transitions. [2022-07-21 09:23:40,574 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 361 transitions. Word has length 250 [2022-07-21 09:23:40,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:23:40,575 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 361 transitions. [2022-07-21 09:23:40,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 5.285714285714286) internal successors, (111), 19 states have internal predecessors, (111), 7 states have call successors, (40), 3 states have call predecessors, (40), 8 states have return successors, (42), 9 states have call predecessors, (42), 6 states have call successors, (42) [2022-07-21 09:23:40,576 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 361 transitions. [2022-07-21 09:23:40,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-07-21 09:23:40,577 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:23:40,577 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-07-21 09:23:40,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 09:23:40,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 09:23:40,794 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:23:40,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:23:40,795 INFO L85 PathProgramCache]: Analyzing trace with hash -905056813, now seen corresponding path program 2 times [2022-07-21 09:23:40,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:23:40,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924190411] [2022-07-21 09:23:40,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:23:40,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:23:40,848 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:23:40,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1970485381] [2022-07-21 09:23:40,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:23:40,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:23:40,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:23:40,849 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:23:40,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 09:23:42,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:23:42,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:23:42,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 3095 conjuncts, 83 conjunts are in the unsatisfiable core [2022-07-21 09:23:42,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:23:42,336 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-07-21 09:23:44,735 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1532 Int) (v_ArrVal_1534 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1532))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1534))))) is different from true [2022-07-21 09:24:05,266 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 337 proven. 18 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-07-21 09:24:05,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:24:08,623 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_84| Int) (v_ArrVal_1547 Int) (v_ArrVal_1548 Int)) (let ((.cse0 (+ |c_ULTIMATE.start_aws_array_list_copy_~from#1.offset| 32))) (or (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_84| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_84|) 0 v_ArrVal_1548)) |c_ULTIMATE.start_aws_array_list_copy_~from#1.base|) .cse0) 0)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_84| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_84|) 0 v_ArrVal_1547)) |c_ULTIMATE.start_aws_array_list_copy_~from#1.base|) .cse0) 0))))) is different from false [2022-07-21 09:24:08,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:24:08,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924190411] [2022-07-21 09:24:08,624 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:24:08,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970485381] [2022-07-21 09:24:08,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970485381] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:24:08,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:24:08,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-07-21 09:24:08,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32201094] [2022-07-21 09:24:08,625 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:24:08,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-21 09:24:08,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:24:08,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-21 09:24:08,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=8, NotChecked=94, Total=702 [2022-07-21 09:24:08,626 INFO L87 Difference]: Start difference. First operand 246 states and 361 transitions. Second operand has 23 states, 19 states have (on average 5.0) internal successors, (95), 21 states have internal predecessors, (95), 9 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) [2022-07-21 09:24:10,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:24:10,170 INFO L93 Difference]: Finished difference Result 456 states and 663 transitions. [2022-07-21 09:24:10,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-21 09:24:10,172 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 5.0) internal successors, (95), 21 states have internal predecessors, (95), 9 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) Word has length 232 [2022-07-21 09:24:10,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:24:10,173 INFO L225 Difference]: With dead ends: 456 [2022-07-21 09:24:10,173 INFO L226 Difference]: Without dead ends: 270 [2022-07-21 09:24:10,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 280 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=137, Invalid=1345, Unknown=8, NotChecked=150, Total=1640 [2022-07-21 09:24:10,175 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 120 mSDsluCounter, 1466 mSDsCounter, 0 mSdLazyCounter, 1687 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 3268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1477 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:24:10,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 1685 Invalid, 3268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1687 Invalid, 0 Unknown, 1477 Unchecked, 1.0s Time] [2022-07-21 09:24:10,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-07-21 09:24:10,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 250. [2022-07-21 09:24:10,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 148 states have (on average 1.1486486486486487) internal successors, (170), 152 states have internal predecessors, (170), 76 states have call successors, (76), 20 states have call predecessors, (76), 25 states have return successors, (117), 77 states have call predecessors, (117), 75 states have call successors, (117) [2022-07-21 09:24:10,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 363 transitions. [2022-07-21 09:24:10,190 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 363 transitions. Word has length 232 [2022-07-21 09:24:10,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:24:10,190 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 363 transitions. [2022-07-21 09:24:10,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 5.0) internal successors, (95), 21 states have internal predecessors, (95), 9 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 9 states have call successors, (32) [2022-07-21 09:24:10,191 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 363 transitions. [2022-07-21 09:24:10,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-07-21 09:24:10,192 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:24:10,192 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1] [2022-07-21 09:24:10,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-21 09:24:10,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-21 09:24:10,407 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:24:10,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:24:10,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1286019851, now seen corresponding path program 1 times [2022-07-21 09:24:10,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:24:10,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665067628] [2022-07-21 09:24:10,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:10,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:24:10,460 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:24:10,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [589694809] [2022-07-21 09:24:10,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:10,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:24:10,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:24:10,461 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:24:10,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 09:24:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:10,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 3095 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:24:10,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:24:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-07-21 09:24:10,984 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:24:10,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:24:10,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665067628] [2022-07-21 09:24:10,984 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:24:10,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589694809] [2022-07-21 09:24:10,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589694809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:24:10,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:24:10,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:24:10,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498866179] [2022-07-21 09:24:10,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:24:10,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:24:10,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:24:10,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:24:10,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:24:10,985 INFO L87 Difference]: Start difference. First operand 250 states and 363 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-21 09:24:11,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:24:11,162 INFO L93 Difference]: Finished difference Result 489 states and 757 transitions. [2022-07-21 09:24:11,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:24:11,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 234 [2022-07-21 09:24:11,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:24:11,164 INFO L225 Difference]: With dead ends: 489 [2022-07-21 09:24:11,164 INFO L226 Difference]: Without dead ends: 260 [2022-07-21 09:24:11,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:24:11,166 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 7 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:24:11,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1051 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:24:11,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-07-21 09:24:11,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 252. [2022-07-21 09:24:11,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 150 states have (on average 1.1466666666666667) internal successors, (172), 154 states have internal predecessors, (172), 76 states have call successors, (76), 20 states have call predecessors, (76), 25 states have return successors, (117), 77 states have call predecessors, (117), 75 states have call successors, (117) [2022-07-21 09:24:11,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 365 transitions. [2022-07-21 09:24:11,177 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 365 transitions. Word has length 234 [2022-07-21 09:24:11,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:24:11,177 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 365 transitions. [2022-07-21 09:24:11,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-21 09:24:11,178 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 365 transitions. [2022-07-21 09:24:11,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-07-21 09:24:11,179 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:24:11,179 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1] [2022-07-21 09:24:11,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-21 09:24:11,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-21 09:24:11,383 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:24:11,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:24:11,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1526259597, now seen corresponding path program 1 times [2022-07-21 09:24:11,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:24:11,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752216829] [2022-07-21 09:24:11,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:11,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:24:11,457 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:24:11,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902196283] [2022-07-21 09:24:11,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:11,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:24:11,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:24:11,459 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:24:11,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 09:24:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:11,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 3100 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-21 09:24:11,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:24:11,989 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:24:12,049 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-21 09:24:12,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2022-07-21 09:24:14,126 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1953 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1953)) |c_#memory_$Pointer$.base|)) is different from true [2022-07-21 09:24:31,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:24:31,905 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-07-21 09:24:31,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:24:31,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:24:31,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752216829] [2022-07-21 09:24:31,905 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:24:31,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902196283] [2022-07-21 09:24:31,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902196283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:24:31,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:24:31,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-21 09:24:31,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390591882] [2022-07-21 09:24:31,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:24:31,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 09:24:31,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:24:31,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 09:24:31,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=255, Unknown=7, NotChecked=32, Total=342 [2022-07-21 09:24:31,907 INFO L87 Difference]: Start difference. First operand 252 states and 365 transitions. Second operand has 19 states, 17 states have (on average 5.529411764705882) internal successors, (94), 16 states have internal predecessors, (94), 8 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2022-07-21 09:24:32,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:24:32,817 INFO L93 Difference]: Finished difference Result 529 states and 804 transitions. [2022-07-21 09:24:32,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 09:24:32,818 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.529411764705882) internal successors, (94), 16 states have internal predecessors, (94), 8 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) Word has length 234 [2022-07-21 09:24:32,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:24:32,820 INFO L225 Difference]: With dead ends: 529 [2022-07-21 09:24:32,820 INFO L226 Difference]: Without dead ends: 326 [2022-07-21 09:24:32,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=66, Invalid=393, Unknown=7, NotChecked=40, Total=506 [2022-07-21 09:24:32,822 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 132 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 3164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1727 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 09:24:32,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1929 Invalid, 3164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1353 Invalid, 0 Unknown, 1727 Unchecked, 0.8s Time] [2022-07-21 09:24:32,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-07-21 09:24:32,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 258. [2022-07-21 09:24:32,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 154 states have (on average 1.1428571428571428) internal successors, (176), 159 states have internal predecessors, (176), 76 states have call successors, (76), 21 states have call predecessors, (76), 27 states have return successors, (120), 77 states have call predecessors, (120), 75 states have call successors, (120) [2022-07-21 09:24:32,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 372 transitions. [2022-07-21 09:24:32,835 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 372 transitions. Word has length 234 [2022-07-21 09:24:32,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:24:32,835 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 372 transitions. [2022-07-21 09:24:32,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.529411764705882) internal successors, (94), 16 states have internal predecessors, (94), 8 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2022-07-21 09:24:32,835 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 372 transitions. [2022-07-21 09:24:32,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-21 09:24:32,837 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:24:32,837 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 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] [2022-07-21 09:24:32,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-21 09:24:33,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-21 09:24:33,055 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:24:33,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:24:33,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1862828068, now seen corresponding path program 1 times [2022-07-21 09:24:33,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:24:33,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475317531] [2022-07-21 09:24:33,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:33,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:24:33,101 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:24:33,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1718351099] [2022-07-21 09:24:33,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:33,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:24:33,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:24:33,103 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:24:33,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-21 09:24:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:33,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 99 conjunts are in the unsatisfiable core [2022-07-21 09:24:33,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:24:33,632 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-21 09:24:33,632 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-07-21 09:24:33,849 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-21 09:24:33,849 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-07-21 09:24:33,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:24:33,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-21 09:24:33,993 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2143 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2143))) (exists ((v_ArrVal_2142 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2142)))) is different from true [2022-07-21 09:24:34,379 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 210 proven. 8 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-07-21 09:24:34,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:24:35,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:24:35,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475317531] [2022-07-21 09:24:35,040 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:24:35,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718351099] [2022-07-21 09:24:35,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718351099] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:24:35,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:24:35,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-07-21 09:24:35,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852042394] [2022-07-21 09:24:35,041 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:24:35,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-21 09:24:35,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:24:35,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-21 09:24:35,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=727, Unknown=8, NotChecked=54, Total=870 [2022-07-21 09:24:35,042 INFO L87 Difference]: Start difference. First operand 258 states and 372 transitions. Second operand has 24 states, 20 states have (on average 4.25) internal successors, (85), 19 states have internal predecessors, (85), 8 states have call successors, (30), 7 states have call predecessors, (30), 8 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) [2022-07-21 09:24:36,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:24:36,220 INFO L93 Difference]: Finished difference Result 529 states and 763 transitions. [2022-07-21 09:24:36,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 09:24:36,220 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 4.25) internal successors, (85), 19 states have internal predecessors, (85), 8 states have call successors, (30), 7 states have call predecessors, (30), 8 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) Word has length 230 [2022-07-21 09:24:36,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:24:36,222 INFO L225 Difference]: With dead ends: 529 [2022-07-21 09:24:36,222 INFO L226 Difference]: Without dead ends: 291 [2022-07-21 09:24:36,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 377 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=170, Invalid=1449, Unknown=25, NotChecked=78, Total=1722 [2022-07-21 09:24:36,224 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 232 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 3381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1587 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 09:24:36,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1474 Invalid, 3381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 1511 Invalid, 0 Unknown, 1587 Unchecked, 0.8s Time] [2022-07-21 09:24:36,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-07-21 09:24:36,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 273. [2022-07-21 09:24:36,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 164 states have (on average 1.1341463414634145) internal successors, (186), 170 states have internal predecessors, (186), 77 states have call successors, (77), 24 states have call predecessors, (77), 31 states have return successors, (139), 78 states have call predecessors, (139), 76 states have call successors, (139) [2022-07-21 09:24:36,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 402 transitions. [2022-07-21 09:24:36,236 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 402 transitions. Word has length 230 [2022-07-21 09:24:36,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:24:36,237 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 402 transitions. [2022-07-21 09:24:36,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 4.25) internal successors, (85), 19 states have internal predecessors, (85), 8 states have call successors, (30), 7 states have call predecessors, (30), 8 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) [2022-07-21 09:24:36,237 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 402 transitions. [2022-07-21 09:24:36,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-21 09:24:36,238 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:24:36,238 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 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] [2022-07-21 09:24:36,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-21 09:24:36,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:24:36,451 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:24:36,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:24:36,452 INFO L85 PathProgramCache]: Analyzing trace with hash 664537688, now seen corresponding path program 2 times [2022-07-21 09:24:36,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:24:36,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513567011] [2022-07-21 09:24:36,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:36,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:24:36,502 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:24:36,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [55480386] [2022-07-21 09:24:36,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:24:36,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:24:36,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:24:36,504 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:24:36,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-21 09:24:37,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:24:37,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:24:37,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 96 conjunts are in the unsatisfiable core [2022-07-21 09:24:37,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:24:37,625 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-21 09:24:37,930 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2339 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_2339))) (exists ((v_ArrVal_2338 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_2338) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-21 09:24:37,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-21 09:24:37,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-21 09:24:40,007 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2341 Int) (v_ArrVal_2343 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2341))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2343)) |c_#memory_$Pointer$.base|))) is different from true [2022-07-21 09:24:42,023 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2341 Int) (v_ArrVal_2343 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2341))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2343))))) is different from true [2022-07-21 09:24:42,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:24:42,055 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-21 09:24:42,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:24:42,059 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-21 09:24:42,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-21 09:24:42,288 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-21 09:24:42,342 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 306 proven. 34 refuted. 0 times theorem prover too weak. 169 trivial. 7 not checked. [2022-07-21 09:24:42,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:24:44,797 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2357 Int) (v_ArrVal_2356 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_142| Int)) (= (let ((.cse0 (+ 32 |c_ULTIMATE.start_aws_array_list_copy_harness_~#from~0#1.offset|))) (+ (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_142| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_142|) 0 v_ArrVal_2357)) |c_ULTIMATE.start_aws_array_list_copy_harness_~#from~0#1.base|) .cse0) (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_142| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_142|) 0 v_ArrVal_2356)) |c_ULTIMATE.start_aws_array_list_copy_harness_~#from~0#1.base|) .cse0))) 0)) is different from false [2022-07-21 09:24:44,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:24:44,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513567011] [2022-07-21 09:24:44,799 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:24:44,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55480386] [2022-07-21 09:24:44,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55480386] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:24:44,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:24:44,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-07-21 09:24:44,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777322213] [2022-07-21 09:24:44,799 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:24:44,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 09:24:44,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:24:44,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 09:24:44,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=589, Unknown=4, NotChecked=204, Total=870 [2022-07-21 09:24:44,800 INFO L87 Difference]: Start difference. First operand 273 states and 402 transitions. Second operand has 21 states, 19 states have (on average 5.157894736842105) internal successors, (98), 21 states have internal predecessors, (98), 11 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (31), 10 states have call predecessors, (31), 11 states have call successors, (31) [2022-07-21 09:25:02,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:25:02,934 INFO L93 Difference]: Finished difference Result 493 states and 724 transitions. [2022-07-21 09:25:02,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-21 09:25:02,934 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.157894736842105) internal successors, (98), 21 states have internal predecessors, (98), 11 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (31), 10 states have call predecessors, (31), 11 states have call successors, (31) Word has length 230 [2022-07-21 09:25:02,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:25:02,936 INFO L225 Difference]: With dead ends: 493 [2022-07-21 09:25:02,936 INFO L226 Difference]: Without dead ends: 282 [2022-07-21 09:25:02,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 316 SyntacticMatches, 13 SemanticMatches, 44 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=187, Invalid=1540, Unknown=11, NotChecked=332, Total=2070 [2022-07-21 09:25:02,938 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 113 mSDsluCounter, 1511 mSDsCounter, 0 mSdLazyCounter, 2765 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 4357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1503 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 09:25:02,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1747 Invalid, 4357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2765 Invalid, 0 Unknown, 1503 Unchecked, 1.7s Time] [2022-07-21 09:25:02,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-07-21 09:25:02,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 274. [2022-07-21 09:25:02,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 164 states have (on average 1.1341463414634145) internal successors, (186), 170 states have internal predecessors, (186), 78 states have call successors, (78), 24 states have call predecessors, (78), 31 states have return successors, (140), 79 states have call predecessors, (140), 77 states have call successors, (140) [2022-07-21 09:25:02,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 404 transitions. [2022-07-21 09:25:02,951 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 404 transitions. Word has length 230 [2022-07-21 09:25:02,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:25:02,951 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 404 transitions. [2022-07-21 09:25:02,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.157894736842105) internal successors, (98), 21 states have internal predecessors, (98), 11 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (31), 10 states have call predecessors, (31), 11 states have call successors, (31) [2022-07-21 09:25:02,952 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 404 transitions. [2022-07-21 09:25:02,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-07-21 09:25:02,953 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:25:02,953 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:25:02,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-07-21 09:25:03,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-21 09:25:03,168 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:25:03,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:25:03,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1507962452, now seen corresponding path program 1 times [2022-07-21 09:25:03,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:25:03,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438047954] [2022-07-21 09:25:03,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:25:03,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:25:03,211 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:25:03,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400079952] [2022-07-21 09:25:03,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:25:03,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:25:03,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:25:03,213 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:25:03,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-21 09:25:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:25:03,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 3074 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-21 09:25:03,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:25:03,829 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 186 proven. 3 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-07-21 09:25:03,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:25:04,332 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 63 proven. 19 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2022-07-21 09:25:04,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:25:04,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438047954] [2022-07-21 09:25:04,332 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:25:04,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400079952] [2022-07-21 09:25:04,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400079952] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:25:04,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:25:04,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 21 [2022-07-21 09:25:04,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961411789] [2022-07-21 09:25:04,333 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:25:04,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 09:25:04,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:25:04,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 09:25:04,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2022-07-21 09:25:04,335 INFO L87 Difference]: Start difference. First operand 274 states and 404 transitions. Second operand has 21 states, 18 states have (on average 5.444444444444445) internal successors, (98), 14 states have internal predecessors, (98), 5 states have call successors, (33), 3 states have call predecessors, (33), 7 states have return successors, (35), 8 states have call predecessors, (35), 4 states have call successors, (35) [2022-07-21 09:25:04,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:25:04,750 INFO L93 Difference]: Finished difference Result 463 states and 681 transitions. [2022-07-21 09:25:04,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 09:25:04,751 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 5.444444444444445) internal successors, (98), 14 states have internal predecessors, (98), 5 states have call successors, (33), 3 states have call predecessors, (33), 7 states have return successors, (35), 8 states have call predecessors, (35), 4 states have call successors, (35) Word has length 242 [2022-07-21 09:25:04,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:25:04,753 INFO L225 Difference]: With dead ends: 463 [2022-07-21 09:25:04,753 INFO L226 Difference]: Without dead ends: 274 [2022-07-21 09:25:04,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 462 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2022-07-21 09:25:04,754 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 12 mSDsluCounter, 4444 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4716 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:25:04,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4716 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 09:25:04,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-07-21 09:25:04,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2022-07-21 09:25:04,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 164 states have (on average 1.1341463414634145) internal successors, (186), 170 states have internal predecessors, (186), 78 states have call successors, (78), 24 states have call predecessors, (78), 31 states have return successors, (138), 79 states have call predecessors, (138), 77 states have call successors, (138) [2022-07-21 09:25:04,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 402 transitions. [2022-07-21 09:25:04,767 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 402 transitions. Word has length 242 [2022-07-21 09:25:04,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:25:04,767 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 402 transitions. [2022-07-21 09:25:04,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 5.444444444444445) internal successors, (98), 14 states have internal predecessors, (98), 5 states have call successors, (33), 3 states have call predecessors, (33), 7 states have return successors, (35), 8 states have call predecessors, (35), 4 states have call successors, (35) [2022-07-21 09:25:04,767 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 402 transitions. [2022-07-21 09:25:04,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-21 09:25:04,769 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:25:04,769 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:25:04,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-21 09:25:04,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-21 09:25:04,979 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:25:04,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:25:04,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1468116584, now seen corresponding path program 2 times [2022-07-21 09:25:04,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:25:04,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244608724] [2022-07-21 09:25:04,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:25:04,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:25:05,025 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:25:05,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1974307177] [2022-07-21 09:25:05,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:25:05,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:25:05,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:25:05,027 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:25:05,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-21 09:25:06,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:25:06,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:25:06,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 137 conjunts are in the unsatisfiable core [2022-07-21 09:25:06,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:25:08,732 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2690 Int) (v_ArrVal_2691 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2688 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2691))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2690))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2688)) |c_#memory_int|))) is different from true [2022-07-21 09:25:10,752 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2690 Int) (v_ArrVal_2691 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2688 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2690))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2688)) |c_#memory_int|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2691))))) is different from true [2022-07-21 09:25:10,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:25:10,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2022-07-21 09:25:10,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:25:10,803 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2022-07-21 09:25:10,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:25:10,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-21 09:25:11,185 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2693 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2693) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2692 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2692))) (exists ((v_ArrVal_2694 Int)) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2694)) |c_#memory_int|))) is different from true [2022-07-21 09:25:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 207 proven. 12 refuted. 0 times theorem prover too weak. 274 trivial. 23 not checked. [2022-07-21 09:25:35,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:25:36,380 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2714 (Array Int Int)) (v_ArrVal_2713 (Array Int Int)) (v_ArrVal_2712 Int) (|v_aws_array_list_is_valid_~#required_size~0.base_91| Int)) (let ((.cse0 (+ |c_ULTIMATE.start_aws_array_list_copy_~from#1.offset| 32))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_array_list_is_valid_~#required_size~0.base_91| v_ArrVal_2713) |c_ULTIMATE.start_aws_array_list_copy_~from#1.base|) .cse0) 0)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_array_list_is_valid_~#required_size~0.base_91| v_ArrVal_2714) |c_ULTIMATE.start_aws_array_list_copy_~from#1.base|) .cse0) 0)) (not (= (mod (select (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_91| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_91|) 0 v_ArrVal_2712)) |c_ULTIMATE.start_aws_array_list_copy_~from#1.base|) (+ |c_ULTIMATE.start_aws_array_list_copy_~from#1.offset| 8)) 18446744073709551616) 0))))) is different from false [2022-07-21 09:25:36,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:25:36,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244608724] [2022-07-21 09:25:36,382 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:25:36,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974307177] [2022-07-21 09:25:36,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974307177] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:25:36,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:25:36,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2022-07-21 09:25:36,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462789349] [2022-07-21 09:25:36,382 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:25:36,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-21 09:25:36,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:25:36,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-21 09:25:36,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=828, Unknown=26, NotChecked=244, Total=1190 [2022-07-21 09:25:36,384 INFO L87 Difference]: Start difference. First operand 274 states and 402 transitions. Second operand has 31 states, 28 states have (on average 3.392857142857143) internal successors, (95), 28 states have internal predecessors, (95), 12 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 12 states have call predecessors, (31), 11 states have call successors, (31) [2022-07-21 09:25:36,599 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2693 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2693) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2692 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2692))) (exists ((v_ArrVal_2690 Int) (v_ArrVal_2691 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2688 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2691))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2690))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2688)) |c_#memory_int|))) (exists ((v_ArrVal_2694 Int)) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2694)) |c_#memory_int|))) is different from true