./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 eb692b52 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-?-eb692b5 [2022-07-19 21:50:06,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:50:06,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:50:06,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:50:06,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:50:06,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:50:06,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:50:06,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:50:06,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:50:06,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:50:06,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:50:06,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:50:06,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:50:06,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:50:06,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:50:06,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:50:06,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:50:06,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:50:06,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:50:06,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:50:06,209 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:50:06,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:50:06,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:50:06,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:50:06,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:50:06,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:50:06,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:50:06,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:50:06,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:50:06,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:50:06,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:50:06,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:50:06,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:50:06,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:50:06,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:50:06,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:50:06,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:50:06,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:50:06,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:50:06,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:50:06,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:50:06,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:50:06,233 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 21:50:06,257 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:50:06,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:50:06,257 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:50:06,257 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:50:06,258 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:50:06,258 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:50:06,259 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:50:06,259 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:50:06,259 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:50:06,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:50:06,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:50:06,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:50:06,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:50:06,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:50:06,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:50:06,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:50:06,261 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:50:06,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:50:06,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:50:06,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:50:06,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:50:06,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:50:06,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:50:06,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:50:06,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:50:06,263 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:50:06,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:50:06,263 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:50:06,263 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:50:06,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:50:06,264 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a98a47bac7562a35bba31573ebdfd704a9d27baca1b439deea796ac12a0961b [2022-07-19 21:50:06,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:50:06,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:50:06,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:50:06,477 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:50:06,477 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:50:06,478 INFO L432 ainManager$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 [2022-07-19 21:50:06,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10b484776/007a75df636e4f47b1f6c4284a47e8f0/FLAG44837bb03 [2022-07-19 21:50:07,066 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:50:07,067 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i [2022-07-19 21:50:07,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10b484776/007a75df636e4f47b1f6c4284a47e8f0/FLAG44837bb03 [2022-07-19 21:50:07,512 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10b484776/007a75df636e4f47b1f6c4284a47e8f0 [2022-07-19 21:50:07,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:50:07,516 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:50:07,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:50:07,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:50:07,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:50:07,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:50:07" (1/1) ... [2022-07-19 21:50:07,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3936c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:07, skipping insertion in model container [2022-07-19 21:50:07,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:50:07" (1/1) ... [2022-07-19 21:50:07,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:50:07,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:50:07,768 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] [2022-07-19 21:50:07,772 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] [2022-07-19 21:50:08,258 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 21:50:08,317 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,318 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,318 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,320 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,321 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,332 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,333 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,334 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,334 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,335 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,336 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,337 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,337 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,505 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 21:50:08,515 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 21:50:08,516 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 21:50:08,516 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 21:50:08,517 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 21:50:08,517 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 21:50:08,518 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 21:50:08,518 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 21:50:08,518 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 21:50:08,519 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 21:50:08,588 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,588 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,591 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,594 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:50:08,666 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:50:08,680 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] [2022-07-19 21:50:08,687 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] [2022-07-19 21:50:08,721 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 21:50:08,732 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,732 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,732 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,733 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,733 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,737 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,737 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,738 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,738 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,739 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,739 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,739 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,739 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,763 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 21:50:08,763 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 21:50:08,764 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 21:50:08,764 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 21:50:08,765 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 21:50:08,765 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 21:50:08,765 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 21:50:08,766 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 21:50:08,766 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 21:50:08,766 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 21:50:08,781 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,786 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,788 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,792 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:50:08,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:50:09,026 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:50:09,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:09 WrapperNode [2022-07-19 21:50:09,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:50:09,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:50:09,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:50:09,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:50:09,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:09" (1/1) ... [2022-07-19 21:50:09,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:09" (1/1) ... [2022-07-19 21:50:09,174 INFO L137 Inliner]: procedures = 691, calls = 1673, calls flagged for inlining = 52, calls inlined = 7, statements flattened = 695 [2022-07-19 21:50:09,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:50:09,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:50:09,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:50:09,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:50:09,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:09" (1/1) ... [2022-07-19 21:50:09,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:09" (1/1) ... [2022-07-19 21:50:09,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:09" (1/1) ... [2022-07-19 21:50:09,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:09" (1/1) ... [2022-07-19 21:50:09,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:09" (1/1) ... [2022-07-19 21:50:09,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:09" (1/1) ... [2022-07-19 21:50:09,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:09" (1/1) ... [2022-07-19 21:50:09,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:50:09,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:50:09,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:50:09,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:50:09,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:09" (1/1) ... [2022-07-19 21:50:09,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:50:09,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:50:09,304 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) [2022-07-19 21:50:09,324 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 [2022-07-19 21:50:09,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:50:09,344 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-19 21:50:09,344 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-19 21:50:09,344 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-19 21:50:09,345 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-19 21:50:09,345 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-19 21:50:09,345 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-19 21:50:09,345 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-07-19 21:50:09,345 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-07-19 21:50:09,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:50:09,345 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-19 21:50:09,346 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-19 21:50:09,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 21:50:09,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 21:50:09,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:50:09,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:50:09,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 21:50:09,346 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-19 21:50:09,347 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-19 21:50:09,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:50:09,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:50:09,348 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-19 21:50:09,348 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-19 21:50:09,348 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-19 21:50:09,348 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-19 21:50:09,348 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-19 21:50:09,348 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-19 21:50:09,348 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-07-19 21:50:09,349 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-07-19 21:50:09,349 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 21:50:09,349 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 21:50:09,349 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-19 21:50:09,349 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-19 21:50:09,349 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-07-19 21:50:09,349 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-07-19 21:50:09,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:50:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 21:50:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 21:50:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-19 21:50:09,351 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-19 21:50:09,351 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-19 21:50:09,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-19 21:50:09,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:50:09,351 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-19 21:50:09,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-19 21:50:09,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:50:09,603 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:50:09,604 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:50:10,186 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:50:10,195 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:50:10,195 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:50:10,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:50:10 BoogieIcfgContainer [2022-07-19 21:50:10,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:50:10,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:50:10,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:50:10,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:50:10,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:50:07" (1/3) ... [2022-07-19 21:50:10,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c791890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:50:10, skipping insertion in model container [2022-07-19 21:50:10,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:50:09" (2/3) ... [2022-07-19 21:50:10,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c791890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:50:10, skipping insertion in model container [2022-07-19 21:50:10,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:50:10" (3/3) ... [2022-07-19 21:50:10,206 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_copy_harness.i [2022-07-19 21:50:10,228 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:50:10,229 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:50:10,285 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:50:10,290 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@2dc46642, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7573f72d [2022-07-19 21:50:10,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 21:50:10,294 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) [2022-07-19 21:50:10,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 21:50:10,307 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:50:10,308 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] [2022-07-19 21:50:10,308 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:50:10,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:50:10,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1428143905, now seen corresponding path program 1 times [2022-07-19 21:50:10,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:50:10,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719879294] [2022-07-19 21:50:10,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:10,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:50:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:10,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:50:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:10,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 21:50:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:10,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 21:50:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:10,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:50:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:10,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:50:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:10,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 21:50:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:10,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 21:50:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:10,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 21:50:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:10,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 21:50:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:10,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 21:50:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:10,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:50:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:10,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:50:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:10,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 21:50:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:10,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 21:50:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:10,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 21:50:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:10,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 21:50:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:10,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 21:50:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:10,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 21:50:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:11,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 21:50:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:11,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-19 21:50:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:11,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 21:50:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:11,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 21:50:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:11,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-19 21:50:11,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:50:11,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719879294] [2022-07-19 21:50:11,062 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-19 21:50:11,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871433757] [2022-07-19 21:50:11,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:11,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:50:11,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:50:11,065 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) [2022-07-19 21:50:11,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 21:50:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:11,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 2347 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 21:50:11,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:50:11,578 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-07-19 21:50:11,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:50:11,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871433757] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:50:11,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:50:11,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:50:11,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565330890] [2022-07-19 21:50:11,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:50:11,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:50:11,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:50:11,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:50:11,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:50:11,612 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) [2022-07-19 21:50:12,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:50:12,006 INFO L93 Difference]: Finished difference Result 416 states and 618 transitions. [2022-07-19 21:50:12,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:50:12,008 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 [2022-07-19 21:50:12,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:50:12,019 INFO L225 Difference]: With dead ends: 416 [2022-07-19 21:50:12,019 INFO L226 Difference]: Without dead ends: 206 [2022-07-19 21:50:12,026 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 [2022-07-19 21:50:12,030 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, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 21:50:12,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 778 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 21:50:12,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-07-19 21:50:12,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2022-07-19 21:50:12,090 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) [2022-07-19 21:50:12,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 289 transitions. [2022-07-19 21:50:12,095 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 289 transitions. Word has length 145 [2022-07-19 21:50:12,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:50:12,096 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 289 transitions. [2022-07-19 21:50:12,096 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) [2022-07-19 21:50:12,096 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 289 transitions. [2022-07-19 21:50:12,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-19 21:50:12,103 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:50:12,103 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] [2022-07-19 21:50:12,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 21:50:12,324 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 [2022-07-19 21:50:12,325 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:50:12,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:50:12,325 INFO L85 PathProgramCache]: Analyzing trace with hash 484121766, now seen corresponding path program 1 times [2022-07-19 21:50:12,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:50:12,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646960394] [2022-07-19 21:50:12,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:12,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:50:12,397 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:50:12,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [236850405] [2022-07-19 21:50:12,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:12,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:50:12,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:50:12,407 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) [2022-07-19 21:50:12,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 21:50:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:12,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 2483 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 21:50:12,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:50:12,828 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-07-19 21:50:12,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:50:12,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:50:12,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646960394] [2022-07-19 21:50:12,830 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:50:12,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236850405] [2022-07-19 21:50:12,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236850405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:50:12,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:50:12,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:50:12,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220738335] [2022-07-19 21:50:12,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:50:12,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:50:12,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:50:12,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:50:12,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:50:12,837 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) [2022-07-19 21:50:12,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:50:12,879 INFO L93 Difference]: Finished difference Result 410 states and 588 transitions. [2022-07-19 21:50:12,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:50:12,880 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 [2022-07-19 21:50:12,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:50:12,886 INFO L225 Difference]: With dead ends: 410 [2022-07-19 21:50:12,886 INFO L226 Difference]: Without dead ends: 211 [2022-07-19 21:50:12,887 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 [2022-07-19 21:50:12,891 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 [2022-07-19 21:50:12,892 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] [2022-07-19 21:50:12,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-07-19 21:50:12,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2022-07-19 21:50:12,922 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) [2022-07-19 21:50:12,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 291 transitions. [2022-07-19 21:50:12,924 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 291 transitions. Word has length 160 [2022-07-19 21:50:12,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:50:12,925 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 291 transitions. [2022-07-19 21:50:12,926 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) [2022-07-19 21:50:12,926 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 291 transitions. [2022-07-19 21:50:12,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-19 21:50:12,927 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:50:12,927 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] [2022-07-19 21:50:12,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 21:50:13,143 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 [2022-07-19 21:50:13,144 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:50:13,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:50:13,144 INFO L85 PathProgramCache]: Analyzing trace with hash -2088842844, now seen corresponding path program 1 times [2022-07-19 21:50:13,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:50:13,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182879617] [2022-07-19 21:50:13,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:13,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:50:13,218 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:50:13,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087512606] [2022-07-19 21:50:13,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:13,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:50:13,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:50:13,222 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) [2022-07-19 21:50:13,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 21:50:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:13,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 2488 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 21:50:13,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:50:13,658 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-07-19 21:50:13,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:50:13,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:50:13,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182879617] [2022-07-19 21:50:13,659 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:50:13,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087512606] [2022-07-19 21:50:13,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087512606] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:50:13,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:50:13,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:50:13,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257558152] [2022-07-19 21:50:13,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:50:13,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:50:13,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:50:13,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:50:13,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:50:13,661 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) [2022-07-19 21:50:13,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:50:13,903 INFO L93 Difference]: Finished difference Result 383 states and 533 transitions. [2022-07-19 21:50:13,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:50:13,904 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 [2022-07-19 21:50:13,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:50:13,906 INFO L225 Difference]: With dead ends: 383 [2022-07-19 21:50:13,906 INFO L226 Difference]: Without dead ends: 208 [2022-07-19 21:50:13,906 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 [2022-07-19 21:50:13,907 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 [2022-07-19 21:50:13,907 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] [2022-07-19 21:50:13,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-19 21:50:13,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-07-19 21:50:13,921 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) [2022-07-19 21:50:13,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 289 transitions. [2022-07-19 21:50:13,923 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 289 transitions. Word has length 160 [2022-07-19 21:50:13,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:50:13,923 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 289 transitions. [2022-07-19 21:50:13,924 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) [2022-07-19 21:50:13,924 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 289 transitions. [2022-07-19 21:50:13,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-19 21:50:13,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:50:13,931 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] [2022-07-19 21:50:13,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 21:50:14,131 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 [2022-07-19 21:50:14,132 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:50:14,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:50:14,132 INFO L85 PathProgramCache]: Analyzing trace with hash 2066938953, now seen corresponding path program 2 times [2022-07-19 21:50:14,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:50:14,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708578106] [2022-07-19 21:50:14,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:14,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:50:14,173 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:50:14,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [894974262] [2022-07-19 21:50:14,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:50:14,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:50:14,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:50:14,175 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) [2022-07-19 21:50:14,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 21:50:14,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-19 21:50:14,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:50:14,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 21:50:14,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:50:14,505 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-07-19 21:50:14,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:50:14,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:50:14,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708578106] [2022-07-19 21:50:14,505 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:50:14,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894974262] [2022-07-19 21:50:14,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894974262] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:50:14,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:50:14,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:50:14,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701245193] [2022-07-19 21:50:14,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:50:14,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:50:14,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:50:14,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:50:14,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:50:14,508 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) [2022-07-19 21:50:14,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:50:14,540 INFO L93 Difference]: Finished difference Result 269 states and 367 transitions. [2022-07-19 21:50:14,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:50:14,541 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 [2022-07-19 21:50:14,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:50:14,545 INFO L225 Difference]: With dead ends: 269 [2022-07-19 21:50:14,545 INFO L226 Difference]: Without dead ends: 213 [2022-07-19 21:50:14,546 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 [2022-07-19 21:50:14,549 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 [2022-07-19 21:50:14,549 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] [2022-07-19 21:50:14,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-07-19 21:50:14,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-07-19 21:50:14,564 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) [2022-07-19 21:50:14,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 295 transitions. [2022-07-19 21:50:14,565 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 295 transitions. Word has length 175 [2022-07-19 21:50:14,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:50:14,566 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 295 transitions. [2022-07-19 21:50:14,566 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) [2022-07-19 21:50:14,566 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 295 transitions. [2022-07-19 21:50:14,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-19 21:50:14,567 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:50:14,567 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] [2022-07-19 21:50:14,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 21:50:14,781 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 [2022-07-19 21:50:14,781 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:50:14,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:50:14,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1798085459, now seen corresponding path program 1 times [2022-07-19 21:50:14,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:50:14,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449446507] [2022-07-19 21:50:14,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:14,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:50:14,821 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:50:14,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2094370699] [2022-07-19 21:50:14,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:14,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:50:14,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:50:14,822 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) [2022-07-19 21:50:14,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 21:50:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:15,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 2633 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 21:50:15,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:50:15,273 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-07-19 21:50:15,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:50:15,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:50:15,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449446507] [2022-07-19 21:50:15,273 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:50:15,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094370699] [2022-07-19 21:50:15,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094370699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:50:15,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:50:15,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:50:15,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035520361] [2022-07-19 21:50:15,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:50:15,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:50:15,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:50:15,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:50:15,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:50:15,275 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) [2022-07-19 21:50:15,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:50:15,562 INFO L93 Difference]: Finished difference Result 382 states and 524 transitions. [2022-07-19 21:50:15,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:50:15,563 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 [2022-07-19 21:50:15,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:50:15,564 INFO L225 Difference]: With dead ends: 382 [2022-07-19 21:50:15,564 INFO L226 Difference]: Without dead ends: 213 [2022-07-19 21:50:15,565 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 [2022-07-19 21:50:15,565 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, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 21:50:15,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 914 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 21:50:15,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-07-19 21:50:15,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-07-19 21:50:15,571 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) [2022-07-19 21:50:15,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 290 transitions. [2022-07-19 21:50:15,573 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 290 transitions. Word has length 181 [2022-07-19 21:50:15,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:50:15,573 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 290 transitions. [2022-07-19 21:50:15,573 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) [2022-07-19 21:50:15,573 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 290 transitions. [2022-07-19 21:50:15,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-19 21:50:15,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:50:15,575 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] [2022-07-19 21:50:15,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 21:50:15,791 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 [2022-07-19 21:50:15,792 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:50:15,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:50:15,792 INFO L85 PathProgramCache]: Analyzing trace with hash -71678011, now seen corresponding path program 1 times [2022-07-19 21:50:15,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:50:15,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493532890] [2022-07-19 21:50:15,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:15,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:50:15,844 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:50:15,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [558899242] [2022-07-19 21:50:15,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:15,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:50:15,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:50:15,845 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) [2022-07-19 21:50:15,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 21:50:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:16,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 2787 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 21:50:16,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:50:16,324 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-07-19 21:50:16,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:50:16,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:50:16,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493532890] [2022-07-19 21:50:16,324 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:50:16,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558899242] [2022-07-19 21:50:16,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558899242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:50:16,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:50:16,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:50:16,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853299441] [2022-07-19 21:50:16,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:50:16,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:50:16,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:50:16,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:50:16,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:50:16,325 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) [2022-07-19 21:50:16,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:50:16,606 INFO L93 Difference]: Finished difference Result 379 states and 509 transitions. [2022-07-19 21:50:16,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:50:16,606 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 [2022-07-19 21:50:16,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:50:16,608 INFO L225 Difference]: With dead ends: 379 [2022-07-19 21:50:16,608 INFO L226 Difference]: Without dead ends: 211 [2022-07-19 21:50:16,609 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 [2022-07-19 21:50:16,609 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, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 21:50:16,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 909 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 21:50:16,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-07-19 21:50:16,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2022-07-19 21:50:16,619 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) [2022-07-19 21:50:16,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 283 transitions. [2022-07-19 21:50:16,620 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 283 transitions. Word has length 195 [2022-07-19 21:50:16,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:50:16,620 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 283 transitions. [2022-07-19 21:50:16,621 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) [2022-07-19 21:50:16,621 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 283 transitions. [2022-07-19 21:50:16,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-07-19 21:50:16,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:50:16,622 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] [2022-07-19 21:50:16,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 21:50:16,832 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 [2022-07-19 21:50:16,832 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:50:16,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:50:16,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1712202978, now seen corresponding path program 1 times [2022-07-19 21:50:16,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:50:16,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65502675] [2022-07-19 21:50:16,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:16,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:50:16,904 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:50:16,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1405592533] [2022-07-19 21:50:16,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:16,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:50:16,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:50:16,905 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) [2022-07-19 21:50:16,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 21:50:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:17,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 2928 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 21:50:17,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:50:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2022-07-19 21:50:17,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:50:17,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:50:17,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65502675] [2022-07-19 21:50:17,386 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:50:17,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405592533] [2022-07-19 21:50:17,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405592533] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:50:17,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:50:17,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:50:17,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826565396] [2022-07-19 21:50:17,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:50:17,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:50:17,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:50:17,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:50:17,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:50:17,387 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) [2022-07-19 21:50:17,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:50:17,424 INFO L93 Difference]: Finished difference Result 269 states and 354 transitions. [2022-07-19 21:50:17,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:50:17,424 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 [2022-07-19 21:50:17,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:50:17,425 INFO L225 Difference]: With dead ends: 269 [2022-07-19 21:50:17,425 INFO L226 Difference]: Without dead ends: 220 [2022-07-19 21:50:17,426 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 [2022-07-19 21:50:17,426 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 [2022-07-19 21:50:17,426 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] [2022-07-19 21:50:17,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-07-19 21:50:17,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 213. [2022-07-19 21:50:17,433 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) [2022-07-19 21:50:17,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 285 transitions. [2022-07-19 21:50:17,435 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 285 transitions. Word has length 210 [2022-07-19 21:50:17,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:50:17,435 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 285 transitions. [2022-07-19 21:50:17,435 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) [2022-07-19 21:50:17,435 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 285 transitions. [2022-07-19 21:50:17,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-19 21:50:17,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:50:17,441 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] [2022-07-19 21:50:17,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 21:50:17,655 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 [2022-07-19 21:50:17,655 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:50:17,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:50:17,656 INFO L85 PathProgramCache]: Analyzing trace with hash 870357412, now seen corresponding path program 1 times [2022-07-19 21:50:17,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:50:17,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136388486] [2022-07-19 21:50:17,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:17,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:50:17,704 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:50:17,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982740121] [2022-07-19 21:50:17,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:17,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:50:17,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:50:17,706 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) [2022-07-19 21:50:17,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 21:50:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:18,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 3056 conjuncts, 114 conjunts are in the unsatisfiable core [2022-07-19 21:50:18,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:50:18,555 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 [2022-07-19 21:50:18,582 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 21:50:18,582 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 [2022-07-19 21:50:18,588 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 [2022-07-19 21:50:18,620 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 21:50:18,621 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 [2022-07-19 21:50:18,626 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 [2022-07-19 21:50:20,754 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 [2022-07-19 21:50:45,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:50:45,132 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 [2022-07-19 21:50:45,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:50:45,137 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 [2022-07-19 21:50:45,475 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 [2022-07-19 21:50:45,477 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 [2022-07-19 21:50:45,542 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 312 proven. 33 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-07-19 21:50:45,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:50:52,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:50:52,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136388486] [2022-07-19 21:50:52,138 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:50:52,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982740121] [2022-07-19 21:50:52,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982740121] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:50:52,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:50:52,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-07-19 21:50:52,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067603707] [2022-07-19 21:50:52,144 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 21:50:52,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-19 21:50:52,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:50:52,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-19 21:50:52,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1017, Unknown=13, NotChecked=130, Total=1260 [2022-07-19 21:50:52,146 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) [2022-07-19 21:51:11,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:51:11,828 INFO L93 Difference]: Finished difference Result 446 states and 625 transitions. [2022-07-19 21:51:11,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-19 21:51:11,828 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 [2022-07-19 21:51:11,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:51:11,832 INFO L225 Difference]: With dead ends: 446 [2022-07-19 21:51:11,832 INFO L226 Difference]: Without dead ends: 266 [2022-07-19 21:51:11,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 305 SyntacticMatches, 13 SemanticMatches, 45 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 51.3s TimeCoverageRelationStatistics Valid=183, Invalid=1784, Unknown=21, NotChecked=174, Total=2162 [2022-07-19 21:51:11,833 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 103 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 2225 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 3811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1503 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 21:51:11,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1852 Invalid, 3811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2225 Invalid, 0 Unknown, 1503 Unchecked, 1.3s Time] [2022-07-19 21:51:11,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-07-19 21:51:11,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 239. [2022-07-19 21:51:11,848 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) [2022-07-19 21:51:11,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 345 transitions. [2022-07-19 21:51:11,850 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 345 transitions. Word has length 226 [2022-07-19 21:51:11,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:51:11,850 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 345 transitions. [2022-07-19 21:51:11,850 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) [2022-07-19 21:51:11,851 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 345 transitions. [2022-07-19 21:51:11,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-07-19 21:51:11,852 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:51:11,852 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] [2022-07-19 21:51:11,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-19 21:51:12,067 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 [2022-07-19 21:51:12,067 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:51:12,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:51:12,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1241589422, now seen corresponding path program 2 times [2022-07-19 21:51:12,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:51:12,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734572447] [2022-07-19 21:51:12,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:51:12,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:51:12,132 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:51:12,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550603711] [2022-07-19 21:51:12,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:51:12,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:51:12,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:51:12,137 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) [2022-07-19 21:51:12,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 21:51:14,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 21:51:14,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:51:14,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 3060 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-19 21:51:14,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:51:14,113 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-07-19 21:51:14,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:51:14,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:51:14,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734572447] [2022-07-19 21:51:14,114 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:51:14,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550603711] [2022-07-19 21:51:14,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550603711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:51:14,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:51:14,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 21:51:14,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803349973] [2022-07-19 21:51:14,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:51:14,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 21:51:14,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:51:14,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 21:51:14,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-19 21:51:14,116 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) [2022-07-19 21:51:14,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:51:14,371 INFO L93 Difference]: Finished difference Result 436 states and 638 transitions. [2022-07-19 21:51:14,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 21:51:14,371 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 [2022-07-19 21:51:14,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:51:14,373 INFO L225 Difference]: With dead ends: 436 [2022-07-19 21:51:14,373 INFO L226 Difference]: Without dead ends: 246 [2022-07-19 21:51:14,374 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 [2022-07-19 21:51:14,374 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 11 mSDsluCounter, 2648 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2923 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 [2022-07-19 21:51:14,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2923 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 21:51:14,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-07-19 21:51:14,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2022-07-19 21:51:14,384 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) [2022-07-19 21:51:14,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 363 transitions. [2022-07-19 21:51:14,386 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 363 transitions. Word has length 232 [2022-07-19 21:51:14,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:51:14,386 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 363 transitions. [2022-07-19 21:51:14,386 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) [2022-07-19 21:51:14,386 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 363 transitions. [2022-07-19 21:51:14,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-07-19 21:51:14,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:51:14,388 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] [2022-07-19 21:51:14,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-19 21:51:14,601 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 [2022-07-19 21:51:14,601 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:51:14,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:51:14,601 INFO L85 PathProgramCache]: Analyzing trace with hash 413253233, now seen corresponding path program 1 times [2022-07-19 21:51:14,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:51:14,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608973985] [2022-07-19 21:51:14,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:51:14,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:51:14,659 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:51:14,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761521446] [2022-07-19 21:51:14,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:51:14,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:51:14,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:51:14,676 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) [2022-07-19 21:51:14,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-19 21:51:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:51:15,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 3107 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-19 21:51:15,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:51:15,186 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 [2022-07-19 21:51:15,359 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 263 proven. 17 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-07-19 21:51:15,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:51:16,018 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 50 proven. 35 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2022-07-19 21:51:16,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:51:16,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608973985] [2022-07-19 21:51:16,019 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:51:16,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761521446] [2022-07-19 21:51:16,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761521446] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:51:16,019 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:51:16,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 26 [2022-07-19 21:51:16,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41562702] [2022-07-19 21:51:16,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 21:51:16,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:51:16,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:51:16,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:51:16,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:51:16,023 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) [2022-07-19 21:51:16,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:51:16,774 INFO L93 Difference]: Finished difference Result 446 states and 655 transitions. [2022-07-19 21:51:16,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:51:16,775 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 [2022-07-19 21:51:16,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:51:16,777 INFO L225 Difference]: With dead ends: 446 [2022-07-19 21:51:16,777 INFO L226 Difference]: Without dead ends: 260 [2022-07-19 21:51:16,778 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 [2022-07-19 21:51:16,778 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 26 mSDsluCounter, 4767 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 5030 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 21:51:16,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 5030 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 21:51:16,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-07-19 21:51:16,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 246. [2022-07-19 21:51:16,790 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) [2022-07-19 21:51:16,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 361 transitions. [2022-07-19 21:51:16,792 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 361 transitions. Word has length 250 [2022-07-19 21:51:16,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:51:16,792 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 361 transitions. [2022-07-19 21:51:16,793 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) [2022-07-19 21:51:16,793 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 361 transitions. [2022-07-19 21:51:16,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-07-19 21:51:16,794 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:51:16,795 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] [2022-07-19 21:51:16,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-19 21:51:17,007 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 [2022-07-19 21:51:17,007 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:51:17,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:51:17,008 INFO L85 PathProgramCache]: Analyzing trace with hash -905056813, now seen corresponding path program 2 times [2022-07-19 21:51:17,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:51:17,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115855304] [2022-07-19 21:51:17,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:51:17,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:51:17,059 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:51:17,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075270235] [2022-07-19 21:51:17,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:51:17,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:51:17,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:51:17,061 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) [2022-07-19 21:51:17,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-19 21:51:18,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 21:51:18,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:51:18,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 3095 conjuncts, 83 conjunts are in the unsatisfiable core [2022-07-19 21:51:18,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:51:18,615 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 [2022-07-19 21:51:21,044 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 [2022-07-19 21:51:41,626 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 337 proven. 18 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-07-19 21:51:41,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:51:43,974 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 [2022-07-19 21:51:43,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:51:43,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115855304] [2022-07-19 21:51:43,976 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:51:43,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075270235] [2022-07-19 21:51:43,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075270235] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:51:43,976 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:51:43,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-07-19 21:51:43,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746852022] [2022-07-19 21:51:43,976 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 21:51:43,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-19 21:51:43,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:51:43,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-19 21:51:43,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=8, NotChecked=94, Total=702 [2022-07-19 21:51:43,977 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) [2022-07-19 21:51:45,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:51:45,728 INFO L93 Difference]: Finished difference Result 456 states and 663 transitions. [2022-07-19 21:51:45,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 21:51:45,728 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 [2022-07-19 21:51:45,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:51:45,730 INFO L225 Difference]: With dead ends: 456 [2022-07-19 21:51:45,730 INFO L226 Difference]: Without dead ends: 270 [2022-07-19 21:51:45,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 280 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 25.3s TimeCoverageRelationStatistics Valid=137, Invalid=1345, Unknown=8, NotChecked=150, Total=1640 [2022-07-19 21:51:45,731 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 109 mSDsluCounter, 1628 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 3495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1459 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 21:51:45,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1848 Invalid, 3495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1934 Invalid, 0 Unknown, 1459 Unchecked, 1.2s Time] [2022-07-19 21:51:45,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-07-19 21:51:45,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 250. [2022-07-19 21:51:45,741 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) [2022-07-19 21:51:45,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 363 transitions. [2022-07-19 21:51:45,742 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 363 transitions. Word has length 232 [2022-07-19 21:51:45,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:51:45,743 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 363 transitions. [2022-07-19 21:51:45,743 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) [2022-07-19 21:51:45,743 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 363 transitions. [2022-07-19 21:51:45,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-07-19 21:51:45,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:51:45,745 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] [2022-07-19 21:51:45,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-19 21:51:45,961 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 [2022-07-19 21:51:45,961 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:51:45,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:51:45,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1286019851, now seen corresponding path program 1 times [2022-07-19 21:51:45,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:51:45,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847734101] [2022-07-19 21:51:45,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:51:45,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:51:46,011 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:51:46,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [502857116] [2022-07-19 21:51:46,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:51:46,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:51:46,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:51:46,013 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) [2022-07-19 21:51:46,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-19 21:51:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:51:46,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 3095 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 21:51:46,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:51:46,539 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-07-19 21:51:46,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:51:46,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:51:46,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847734101] [2022-07-19 21:51:46,540 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:51:46,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502857116] [2022-07-19 21:51:46,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502857116] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:51:46,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:51:46,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:51:46,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785066744] [2022-07-19 21:51:46,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:51:46,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:51:46,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:51:46,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:51:46,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:51:46,541 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) [2022-07-19 21:51:46,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:51:46,721 INFO L93 Difference]: Finished difference Result 489 states and 757 transitions. [2022-07-19 21:51:46,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:51:46,722 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 [2022-07-19 21:51:46,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:51:46,723 INFO L225 Difference]: With dead ends: 489 [2022-07-19 21:51:46,723 INFO L226 Difference]: Without dead ends: 260 [2022-07-19 21:51:46,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:51:46,725 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 [2022-07-19 21:51:46,725 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] [2022-07-19 21:51:46,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-07-19 21:51:46,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 252. [2022-07-19 21:51:46,735 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) [2022-07-19 21:51:46,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 365 transitions. [2022-07-19 21:51:46,736 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 365 transitions. Word has length 234 [2022-07-19 21:51:46,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:51:46,737 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 365 transitions. [2022-07-19 21:51:46,737 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) [2022-07-19 21:51:46,737 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 365 transitions. [2022-07-19 21:51:46,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-07-19 21:51:46,739 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:51:46,739 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 21:51:46,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-19 21:51:46,960 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 [2022-07-19 21:51:46,961 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:51:46,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:51:46,961 INFO L85 PathProgramCache]: Analyzing trace with hash -544040927, now seen corresponding path program 1 times [2022-07-19 21:51:46,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:51:46,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195586220] [2022-07-19 21:51:46,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:51:46,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:51:47,022 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:51:47,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933410487] [2022-07-19 21:51:47,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:51:47,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:51:47,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:51:47,024 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) [2022-07-19 21:51:47,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-19 21:51:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:51:47,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 3108 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-19 21:51:47,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:51:47,536 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 [2022-07-19 21:51:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 197 proven. 21 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2022-07-19 21:51:47,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:51:48,365 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 63 proven. 19 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2022-07-19 21:51:48,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:51:48,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195586220] [2022-07-19 21:51:48,366 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:51:48,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933410487] [2022-07-19 21:51:48,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933410487] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:51:48,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:51:48,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 26 [2022-07-19 21:51:48,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563706057] [2022-07-19 21:51:48,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 21:51:48,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:51:48,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:51:48,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:51:48,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:51:48,368 INFO L87 Difference]: Start difference. First operand 252 states and 365 transitions. Second operand has 26 states, 21 states have (on average 5.333333333333333) internal successors, (112), 19 states have internal predecessors, (112), 7 states have call successors, (38), 3 states have call predecessors, (38), 8 states have return successors, (40), 9 states have call predecessors, (40), 6 states have call successors, (40) [2022-07-19 21:51:49,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:51:49,188 INFO L93 Difference]: Finished difference Result 451 states and 651 transitions. [2022-07-19 21:51:49,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:51:49,189 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 5.333333333333333) internal successors, (112), 19 states have internal predecessors, (112), 7 states have call successors, (38), 3 states have call predecessors, (38), 8 states have return successors, (40), 9 states have call predecessors, (40), 6 states have call successors, (40) Word has length 246 [2022-07-19 21:51:49,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:51:49,191 INFO L225 Difference]: With dead ends: 451 [2022-07-19 21:51:49,191 INFO L226 Difference]: Without dead ends: 266 [2022-07-19 21:51:49,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 465 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2022-07-19 21:51:49,192 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 31 mSDsluCounter, 5233 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 5495 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 21:51:49,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 5495 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 21:51:49,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-07-19 21:51:49,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 252. [2022-07-19 21:51:49,211 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, (115), 77 states have call predecessors, (115), 75 states have call successors, (115) [2022-07-19 21:51:49,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 363 transitions. [2022-07-19 21:51:49,213 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 363 transitions. Word has length 246 [2022-07-19 21:51:49,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:51:49,214 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 363 transitions. [2022-07-19 21:51:49,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 5.333333333333333) internal successors, (112), 19 states have internal predecessors, (112), 7 states have call successors, (38), 3 states have call predecessors, (38), 8 states have return successors, (40), 9 states have call predecessors, (40), 6 states have call successors, (40) [2022-07-19 21:51:49,215 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 363 transitions. [2022-07-19 21:51:49,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-07-19 21:51:49,216 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:51:49,216 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] [2022-07-19 21:51:49,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-19 21:51:49,441 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 [2022-07-19 21:51:49,442 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:51:49,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:51:49,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1526259597, now seen corresponding path program 2 times [2022-07-19 21:51:49,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:51:49,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790943948] [2022-07-19 21:51:49,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:51:49,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:51:49,494 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:51:49,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1969045815] [2022-07-19 21:51:49,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:51:49,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:51:49,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:51:49,496 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) [2022-07-19 21:51:49,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-19 21:51:50,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 21:51:50,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:51:50,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 3100 conjuncts, 72 conjunts are in the unsatisfiable core [2022-07-19 21:51:50,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:51:50,464 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 [2022-07-19 21:51:50,519 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-19 21:51:50,519 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 [2022-07-19 21:51:52,604 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2122 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$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|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2122)))) is different from true [2022-07-19 21:52:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-07-19 21:52:10,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:52:10,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:52:10,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790943948] [2022-07-19 21:52:10,209 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:52:10,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969045815] [2022-07-19 21:52:10,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969045815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:52:10,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:52:10,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-19 21:52:10,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641213282] [2022-07-19 21:52:10,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:52:10,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-19 21:52:10,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:52:10,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-19 21:52:10,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=255, Unknown=7, NotChecked=32, Total=342 [2022-07-19 21:52:10,210 INFO L87 Difference]: Start difference. First operand 252 states and 363 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) [2022-07-19 21:52:10,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:52:10,910 INFO L93 Difference]: Finished difference Result 465 states and 665 transitions. [2022-07-19 21:52:10,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 21:52:10,911 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 [2022-07-19 21:52:10,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:52:10,913 INFO L225 Difference]: With dead ends: 465 [2022-07-19 21:52:10,913 INFO L226 Difference]: Without dead ends: 262 [2022-07-19 21:52:10,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=66, Invalid=393, Unknown=7, NotChecked=40, Total=506 [2022-07-19 21:52:10,915 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 107 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 2149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 948 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 21:52:10,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 1141 Invalid, 2149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1114 Invalid, 0 Unknown, 948 Unchecked, 0.6s Time] [2022-07-19 21:52:10,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-07-19 21:52:10,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 255. [2022-07-19 21:52:10,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 152 states have (on average 1.144736842105263) internal successors, (174), 156 states have internal predecessors, (174), 76 states have call successors, (76), 21 states have call predecessors, (76), 26 states have return successors, (115), 77 states have call predecessors, (115), 75 states have call successors, (115) [2022-07-19 21:52:10,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 365 transitions. [2022-07-19 21:52:10,926 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 365 transitions. Word has length 234 [2022-07-19 21:52:10,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:52:10,926 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 365 transitions. [2022-07-19 21:52:10,926 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) [2022-07-19 21:52:10,926 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 365 transitions. [2022-07-19 21:52:10,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-07-19 21:52:10,928 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:52:10,928 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:52:10,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-19 21:52:11,147 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 [2022-07-19 21:52:11,147 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:52:11,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:52:11,148 INFO L85 PathProgramCache]: Analyzing trace with hash -288848274, now seen corresponding path program 1 times [2022-07-19 21:52:11,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:52:11,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338417087] [2022-07-19 21:52:11,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:52:11,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:52:11,196 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:52:11,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1372863913] [2022-07-19 21:52:11,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:52:11,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:52:11,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:52:11,204 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) [2022-07-19 21:52:11,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-19 21:52:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:11,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 3070 conjuncts, 101 conjunts are in the unsatisfiable core [2022-07-19 21:52:11,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:52:11,717 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-19 21:52:11,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2022-07-19 21:52:11,960 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-19 21:52:11,960 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 [2022-07-19 21:52:11,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:52:11,965 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 [2022-07-19 21:52:12,117 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2295 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2295))) (exists ((v_ArrVal_2294 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2294)))) is different from true [2022-07-19 21:52:12,482 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 210 proven. 8 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2022-07-19 21:52:12,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:52:13,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:52:13,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338417087] [2022-07-19 21:52:13,243 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:52:13,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372863913] [2022-07-19 21:52:13,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372863913] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:52:13,243 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:52:13,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-07-19 21:52:13,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589949317] [2022-07-19 21:52:13,243 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 21:52:13,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-19 21:52:13,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:52:13,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-19 21:52:13,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=728, Unknown=7, NotChecked=54, Total=870 [2022-07-19 21:52:13,244 INFO L87 Difference]: Start difference. First operand 255 states and 365 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) [2022-07-19 21:52:14,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:52:14,880 INFO L93 Difference]: Finished difference Result 523 states and 751 transitions. [2022-07-19 21:52:14,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 21:52:14,881 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 236 [2022-07-19 21:52:14,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:52:14,882 INFO L225 Difference]: With dead ends: 523 [2022-07-19 21:52:14,882 INFO L226 Difference]: Without dead ends: 288 [2022-07-19 21:52:14,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 389 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=170, Invalid=1450, Unknown=24, NotChecked=78, Total=1722 [2022-07-19 21:52:14,884 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 100 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 2138 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 4148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1913 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 21:52:14,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 1767 Invalid, 4148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2138 Invalid, 0 Unknown, 1913 Unchecked, 1.3s Time] [2022-07-19 21:52:14,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-07-19 21:52:14,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 270. [2022-07-19 21:52:14,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 162 states have (on average 1.1358024691358024) internal successors, (184), 167 states have internal predecessors, (184), 77 states have call successors, (77), 24 states have call predecessors, (77), 30 states have return successors, (134), 78 states have call predecessors, (134), 76 states have call successors, (134) [2022-07-19 21:52:14,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 395 transitions. [2022-07-19 21:52:14,906 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 395 transitions. Word has length 236 [2022-07-19 21:52:14,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:52:14,907 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 395 transitions. [2022-07-19 21:52:14,907 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) [2022-07-19 21:52:14,907 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 395 transitions. [2022-07-19 21:52:14,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-19 21:52:14,908 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:52:14,908 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] [2022-07-19 21:52:14,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-19 21:52:15,123 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 [2022-07-19 21:52:15,124 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:52:15,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:52:15,124 INFO L85 PathProgramCache]: Analyzing trace with hash 664537688, now seen corresponding path program 2 times [2022-07-19 21:52:15,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:52:15,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891842033] [2022-07-19 21:52:15,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:52:15,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:52:15,172 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:52:15,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1826718746] [2022-07-19 21:52:15,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:52:15,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:52:15,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:52:15,174 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) [2022-07-19 21:52:15,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-19 21:52:15,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 21:52:15,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:52:15,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 102 conjunts are in the unsatisfiable core [2022-07-19 21:52:15,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:52:15,982 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-19 21:52:15,983 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 [2022-07-19 21:52:15,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:52:15,988 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 [2022-07-19 21:52:18,107 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2492 Int) (v_ArrVal_2493 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2492))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2493)) |c_#memory_$Pointer$.base|))) is different from true [2022-07-19 21:52:31,098 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 329 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-07-19 21:52:31,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:52:31,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:52:31,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891842033] [2022-07-19 21:52:31,098 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:52:31,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826718746] [2022-07-19 21:52:31,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826718746] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:52:31,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:52:31,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-19 21:52:31,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211139722] [2022-07-19 21:52:31,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:52:31,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-19 21:52:31,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:52:31,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-19 21:52:31,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=331, Unknown=3, NotChecked=36, Total=420 [2022-07-19 21:52:31,099 INFO L87 Difference]: Start difference. First operand 270 states and 395 transitions. Second operand has 21 states, 17 states have (on average 5.588235294117647) internal successors, (95), 18 states have internal predecessors, (95), 9 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) [2022-07-19 21:52:32,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:52:32,075 INFO L93 Difference]: Finished difference Result 484 states and 710 transitions. [2022-07-19 21:52:32,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:52:32,076 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 5.588235294117647) internal successors, (95), 18 states have internal predecessors, (95), 9 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) Word has length 230 [2022-07-19 21:52:32,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:52:32,078 INFO L225 Difference]: With dead ends: 484 [2022-07-19 21:52:32,078 INFO L226 Difference]: Without dead ends: 277 [2022-07-19 21:52:32,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=95, Invalid=608, Unknown=3, NotChecked=50, Total=756 [2022-07-19 21:52:32,079 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 98 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 2650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1355 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 21:52:32,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 1443 Invalid, 2650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1210 Invalid, 0 Unknown, 1355 Unchecked, 0.7s Time] [2022-07-19 21:52:32,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-07-19 21:52:32,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 271. [2022-07-19 21:52:32,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 162 states have (on average 1.1358024691358024) internal successors, (184), 167 states have internal predecessors, (184), 78 states have call successors, (78), 24 states have call predecessors, (78), 30 states have return successors, (134), 79 states have call predecessors, (134), 77 states have call successors, (134) [2022-07-19 21:52:32,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 396 transitions. [2022-07-19 21:52:32,094 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 396 transitions. Word has length 230 [2022-07-19 21:52:32,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:52:32,094 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 396 transitions. [2022-07-19 21:52:32,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 5.588235294117647) internal successors, (95), 18 states have internal predecessors, (95), 9 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) [2022-07-19 21:52:32,095 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 396 transitions. [2022-07-19 21:52:32,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-07-19 21:52:32,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:52:32,096 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:52:32,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-19 21:52:32,303 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 [2022-07-19 21:52:32,303 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:52:32,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:52:32,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2112865375, now seen corresponding path program 3 times [2022-07-19 21:52:32,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:52:32,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121385573] [2022-07-19 21:52:32,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:52:32,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:52:32,358 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:52:32,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428897696] [2022-07-19 21:52:32,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 21:52:32,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:52:32,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:52:32,360 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) [2022-07-19 21:52:32,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-19 21:52:33,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-19 21:52:33,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:52:34,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 2737 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-19 21:52:34,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:52:35,099 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2681 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_2681)) |c_#memory_int|)) is different from true [2022-07-19 21:52:37,821 INFO L356 Elim1Store]: treesize reduction 33, result has 38.9 percent of original size [2022-07-19 21:52:37,822 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 37 [2022-07-19 21:52:38,069 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 200 proven. 27 refuted. 0 times theorem prover too weak. 282 trivial. 6 not checked. [2022-07-19 21:52:38,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:52:38,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:52:38,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121385573] [2022-07-19 21:52:38,190 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:52:38,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428897696] [2022-07-19 21:52:38,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428897696] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:52:38,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:52:38,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-07-19 21:52:38,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491739311] [2022-07-19 21:52:38,191 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 21:52:38,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 21:52:38,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:52:38,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 21:52:38,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=198, Unknown=3, NotChecked=28, Total=272 [2022-07-19 21:52:38,192 INFO L87 Difference]: Start difference. First operand 271 states and 396 transitions. Second operand has 16 states, 15 states have (on average 6.533333333333333) internal successors, (98), 16 states have internal predecessors, (98), 8 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (33), 8 states have call predecessors, (33), 7 states have call successors, (33) [2022-07-19 21:52:55,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:52:55,936 INFO L93 Difference]: Finished difference Result 440 states and 667 transitions. [2022-07-19 21:52:55,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-19 21:52:55,937 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.533333333333333) internal successors, (98), 16 states have internal predecessors, (98), 8 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (33), 8 states have call predecessors, (33), 7 states have call successors, (33) Word has length 242 [2022-07-19 21:52:55,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:52:55,939 INFO L225 Difference]: With dead ends: 440 [2022-07-19 21:52:55,939 INFO L226 Difference]: Without dead ends: 351 [2022-07-19 21:52:55,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 230 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=151, Invalid=592, Unknown=17, NotChecked=52, Total=812 [2022-07-19 21:52:55,940 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 62 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 1838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1196 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 21:52:55,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 2263 Invalid, 1838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 624 Invalid, 0 Unknown, 1196 Unchecked, 0.6s Time] [2022-07-19 21:52:55,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-07-19 21:52:55,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 314. [2022-07-19 21:52:55,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 191 states have (on average 1.1361256544502618) internal successors, (217), 197 states have internal predecessors, (217), 87 states have call successors, (87), 28 states have call predecessors, (87), 35 states have return successors, (162), 88 states have call predecessors, (162), 86 states have call successors, (162) [2022-07-19 21:52:55,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 466 transitions. [2022-07-19 21:52:55,957 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 466 transitions. Word has length 242 [2022-07-19 21:52:55,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:52:55,957 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 466 transitions. [2022-07-19 21:52:55,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.533333333333333) internal successors, (98), 16 states have internal predecessors, (98), 8 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (33), 8 states have call predecessors, (33), 7 states have call successors, (33) [2022-07-19 21:52:55,958 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 466 transitions. [2022-07-19 21:52:55,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-19 21:52:55,959 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:52:55,959 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, 3, 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] [2022-07-19 21:52:55,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-19 21:52:56,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-19 21:52:56,171 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:52:56,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:52:56,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1019853016, now seen corresponding path program 1 times [2022-07-19 21:52:56,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:52:56,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711699935] [2022-07-19 21:52:56,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:52:56,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:52:56,234 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:52:56,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679088075] [2022-07-19 21:52:56,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:52:56,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:52:56,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:52:56,236 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:52:56,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-19 21:52:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:56,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 80 conjunts are in the unsatisfiable core [2022-07-19 21:52:56,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:52:56,934 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-19 21:52:56,934 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 [2022-07-19 21:52:56,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:52:56,939 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 [2022-07-19 21:52:59,062 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2866 Int) (v_ArrVal_2868 Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2868))) (= |c_#memory_$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_2866))))) is different from true [2022-07-19 21:53:36,939 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 312 proven. 1 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-07-19 21:53:36,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:53:43,848 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2882 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_178| Int)) (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_178| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_178|) 0 v_ArrVal_2882)) |c_ULTIMATE.start_aws_array_list_copy_harness_~#to~0#1.base|) (+ 32 |c_ULTIMATE.start_aws_array_list_copy_harness_~#to~0#1.offset|)) 0)) (forall ((v_ArrVal_2883 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_178| Int)) (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_178| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_178|) 0 v_ArrVal_2883)) |c_ULTIMATE.start_aws_array_list_copy_harness_~#to~0#1.base|) (+ 32 |c_ULTIMATE.start_aws_array_list_copy_harness_~#to~0#1.offset|)) 0))) is different from false [2022-07-19 21:53:43,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:53:43,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711699935] [2022-07-19 21:53:43,849 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:53:43,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679088075] [2022-07-19 21:53:43,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679088075] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:53:43,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:53:43,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-07-19 21:53:43,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535901821] [2022-07-19 21:53:43,849 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 21:53:43,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-19 21:53:43,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:53:43,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-19 21:53:43,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=438, Unknown=18, NotChecked=86, Total=600 [2022-07-19 21:53:43,851 INFO L87 Difference]: Start difference. First operand 314 states and 466 transitions. Second operand has 21 states, 18 states have (on average 5.222222222222222) internal successors, (94), 19 states have internal predecessors, (94), 8 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (31), 7 states have call predecessors, (31), 8 states have call successors, (31) [2022-07-19 21:53:58,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:53:58,279 INFO L93 Difference]: Finished difference Result 620 states and 967 transitions. [2022-07-19 21:53:58,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:53:58,280 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 5.222222222222222) internal successors, (94), 19 states have internal predecessors, (94), 8 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (31), 7 states have call predecessors, (31), 8 states have call successors, (31) Word has length 230 [2022-07-19 21:53:58,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:53:58,282 INFO L225 Difference]: With dead ends: 620 [2022-07-19 21:53:58,282 INFO L226 Difference]: Without dead ends: 369 [2022-07-19 21:53:58,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 333 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 59.8s TimeCoverageRelationStatistics Valid=109, Invalid=805, Unknown=24, NotChecked=118, Total=1056 [2022-07-19 21:53:58,283 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 155 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 3859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2082 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:53:58,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 2077 Invalid, 3859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1685 Invalid, 0 Unknown, 2082 Unchecked, 1.1s Time] [2022-07-19 21:53:58,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-07-19 21:53:58,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 313. [2022-07-19 21:53:58,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 191 states have (on average 1.1361256544502618) internal successors, (217), 197 states have internal predecessors, (217), 86 states have call successors, (86), 28 states have call predecessors, (86), 35 states have return successors, (159), 87 states have call predecessors, (159), 85 states have call successors, (159) [2022-07-19 21:53:58,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 462 transitions. [2022-07-19 21:53:58,298 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 462 transitions. Word has length 230 [2022-07-19 21:53:58,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:53:58,299 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 462 transitions. [2022-07-19 21:53:58,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 5.222222222222222) internal successors, (94), 19 states have internal predecessors, (94), 8 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (31), 7 states have call predecessors, (31), 8 states have call successors, (31) [2022-07-19 21:53:58,299 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 462 transitions. [2022-07-19 21:53:58,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-07-19 21:53:58,300 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:53:58,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:53:58,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-19 21:53:58,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-19 21:53:58,515 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:53:58,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:53:58,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1484303893, now seen corresponding path program 1 times [2022-07-19 21:53:58,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:53:58,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839381917] [2022-07-19 21:53:58,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:53:58,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:53:58,560 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:53:58,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1764850429] [2022-07-19 21:53:58,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:53:58,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:53:58,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:53:58,564 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:53:58,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-19 21:53:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:53:59,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 3105 conjuncts, 61 conjunts are in the unsatisfiable core [2022-07-19 21:53:59,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:53:59,220 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-19 21:53:59,221 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 [2022-07-19 21:53:59,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:53:59,439 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 [2022-07-19 21:53:59,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:53:59,519 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-19 21:53:59,519 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 23 treesize of output 22 [2022-07-19 21:53:59,557 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-19 21:53:59,557 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 12 treesize of output 14 [2022-07-19 21:53:59,779 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3092 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3092) |c_#memory_int|)) is different from true [2022-07-19 21:53:59,961 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 175 proven. 4 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-07-19 21:53:59,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:54:00,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:54:00,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839381917] [2022-07-19 21:54:00,239 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:54:00,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764850429] [2022-07-19 21:54:00,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764850429] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:54:00,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:54:00,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-07-19 21:54:00,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500765284] [2022-07-19 21:54:00,239 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 21:54:00,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-19 21:54:00,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:54:00,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-19 21:54:00,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=4, NotChecked=42, Total=552 [2022-07-19 21:54:00,240 INFO L87 Difference]: Start difference. First operand 313 states and 462 transitions. Second operand has 23 states, 21 states have (on average 4.190476190476191) internal successors, (88), 18 states have internal predecessors, (88), 8 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (30), 7 states have call predecessors, (30), 8 states have call successors, (30) [2022-07-19 21:54:01,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:54:01,165 INFO L93 Difference]: Finished difference Result 643 states and 939 transitions. [2022-07-19 21:54:01,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 21:54:01,166 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 4.190476190476191) internal successors, (88), 18 states have internal predecessors, (88), 8 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (30), 7 states have call predecessors, (30), 8 states have call successors, (30) Word has length 236 [2022-07-19 21:54:01,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:54:01,167 INFO L225 Difference]: With dead ends: 643 [2022-07-19 21:54:01,167 INFO L226 Difference]: Without dead ends: 358 [2022-07-19 21:54:01,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 390 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=115, Invalid=686, Unknown=15, NotChecked=54, Total=870 [2022-07-19 21:54:01,169 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 221 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 2649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1374 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 21:54:01,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 1014 Invalid, 2649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 991 Invalid, 0 Unknown, 1374 Unchecked, 0.7s Time] [2022-07-19 21:54:01,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-07-19 21:54:01,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 337. [2022-07-19 21:54:01,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 207 states have (on average 1.1352657004830917) internal successors, (235), 214 states have internal predecessors, (235), 89 states have call successors, (89), 32 states have call predecessors, (89), 40 states have return successors, (165), 90 states have call predecessors, (165), 88 states have call successors, (165) [2022-07-19 21:54:01,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 489 transitions. [2022-07-19 21:54:01,184 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 489 transitions. Word has length 236 [2022-07-19 21:54:01,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:54:01,184 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 489 transitions. [2022-07-19 21:54:01,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 4.190476190476191) internal successors, (88), 18 states have internal predecessors, (88), 8 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (30), 7 states have call predecessors, (30), 8 states have call successors, (30) [2022-07-19 21:54:01,185 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 489 transitions. [2022-07-19 21:54:01,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-07-19 21:54:01,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:54:01,186 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, 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] [2022-07-19 21:54:01,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-07-19 21:54:01,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:01,390 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:54:01,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:54:01,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1383181934, now seen corresponding path program 2 times [2022-07-19 21:54:01,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:54:01,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121640134] [2022-07-19 21:54:01,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:01,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:54:01,441 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:54:01,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [24741677] [2022-07-19 21:54:01,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:54:01,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:01,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:54:01,443 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:54:01,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-19 21:54:02,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 21:54:02,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:54:02,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 3070 conjuncts, 105 conjunts are in the unsatisfiable core [2022-07-19 21:54:02,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:54:02,601 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-19 21:54:02,602 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 [2022-07-19 21:54:02,812 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-19 21:54:02,812 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 [2022-07-19 21:54:02,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:54:02,817 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 [2022-07-19 21:54:03,019 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3271 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3271) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_3270 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3270) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-19 21:54:03,286 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 182 proven. 4 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-07-19 21:54:03,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:54:03,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:54:03,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121640134] [2022-07-19 21:54:03,956 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 21:54:03,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24741677] [2022-07-19 21:54:03,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24741677] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:54:03,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:54:03,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-07-19 21:54:03,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957465343] [2022-07-19 21:54:03,956 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 21:54:03,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-19 21:54:03,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:54:03,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-19 21:54:03,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=676, Unknown=6, NotChecked=52, Total=812 [2022-07-19 21:54:03,957 INFO L87 Difference]: Start difference. First operand 337 states and 489 transitions. Second operand has 23 states, 20 states have (on average 4.2) internal successors, (84), 19 states have internal predecessors, (84), 7 states have call successors, (30), 7 states have call predecessors, (30), 8 states have return successors, (29), 6 states have call predecessors, (29), 7 states have call successors, (29) [2022-07-19 21:54:05,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:54:05,032 INFO L93 Difference]: Finished difference Result 669 states and 981 transitions. [2022-07-19 21:54:05,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 21:54:05,033 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 4.2) internal successors, (84), 19 states have internal predecessors, (84), 7 states have call successors, (30), 7 states have call predecessors, (30), 8 states have return successors, (29), 6 states have call predecessors, (29), 7 states have call successors, (29) Word has length 236 [2022-07-19 21:54:05,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:54:05,035 INFO L225 Difference]: With dead ends: 669 [2022-07-19 21:54:05,035 INFO L226 Difference]: Without dead ends: 360 [2022-07-19 21:54:05,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 390 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=160, Invalid=1304, Unknown=22, NotChecked=74, Total=1560 [2022-07-19 21:54:05,037 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 239 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 3124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1696 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 21:54:05,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 1367 Invalid, 3124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 1153 Invalid, 0 Unknown, 1696 Unchecked, 0.7s Time] [2022-07-19 21:54:05,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-07-19 21:54:05,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 342. [2022-07-19 21:54:05,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 210 states have (on average 1.1333333333333333) internal successors, (238), 218 states have internal predecessors, (238), 90 states have call successors, (90), 32 states have call predecessors, (90), 41 states have return successors, (187), 91 states have call predecessors, (187), 89 states have call successors, (187) [2022-07-19 21:54:05,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 515 transitions. [2022-07-19 21:54:05,054 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 515 transitions. Word has length 236 [2022-07-19 21:54:05,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:54:05,054 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 515 transitions. [2022-07-19 21:54:05,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 4.2) internal successors, (84), 19 states have internal predecessors, (84), 7 states have call successors, (30), 7 states have call predecessors, (30), 8 states have return successors, (29), 6 states have call predecessors, (29), 7 states have call successors, (29) [2022-07-19 21:54:05,054 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 515 transitions. [2022-07-19 21:54:05,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-07-19 21:54:05,056 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:54:05,056 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:54:05,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-19 21:54:05,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:05,264 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:54:05,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:54:05,265 INFO L85 PathProgramCache]: Analyzing trace with hash -942379307, now seen corresponding path program 1 times [2022-07-19 21:54:05,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:54:05,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257549699] [2022-07-19 21:54:05,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:05,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:54:05,336 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 21:54:05,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151375783] [2022-07-19 21:54:05,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:05,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:05,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:54:05,338 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:54:05,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-19 21:54:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:05,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 3105 conjuncts, 207 conjunts are in the unsatisfiable core [2022-07-19 21:54:05,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:54:05,943 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-19 21:54:05,943 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 [2022-07-19 21:54:06,062 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 [2022-07-19 21:54:06,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:54:06,097 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-19 21:54:06,195 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-19 21:54:06,195 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 34 treesize of output 27 [2022-07-19 21:54:06,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:54:06,203 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 [2022-07-19 21:54:06,239 INFO L356 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2022-07-19 21:54:06,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2022-07-19 21:54:06,373 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3497 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3497))) (exists ((v_ArrVal_3496 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3496)))) is different from true [2022-07-19 21:54:06,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:54:06,443 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-07-19 21:54:06,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:54:06,448 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2022-07-19 21:54:06,469 INFO L356 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2022-07-19 21:54:06,469 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-07-19 21:54:06,749 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3498 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_3498))) (exists ((v_ArrVal_3499 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_3499) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-19 21:54:06,755 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 17 treesize of output 19 [2022-07-19 21:54:06,760 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 [2022-07-19 21:54:08,866 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_3500 Int) (v_ArrVal_3501 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_3500)) |c_#memory_$Pointer$.base|) (= |c_#memory_$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_3501))))) is different from true [2022-07-19 21:54:21,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:54:21,128 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 [2022-07-19 21:54:21,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:54:21,131 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 22 treesize of output 21 [2022-07-19 21:54:32,014 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7