./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 6c24879c 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-?-6c24879 [2022-07-12 10:47:11,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:47:11,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:47:11,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:47:11,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:47:11,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:47:11,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:47:11,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:47:11,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:47:11,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:47:11,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:47:11,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:47:11,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:47:11,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:47:11,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:47:11,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:47:11,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:47:11,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:47:11,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:47:11,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:47:11,387 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:47:11,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:47:11,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:47:11,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:47:11,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:47:11,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:47:11,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:47:11,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:47:11,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:47:11,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:47:11,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:47:11,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:47:11,399 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:47:11,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:47:11,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:47:11,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:47:11,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:47:11,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:47:11,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:47:11,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:47:11,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:47:11,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:47:11,405 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 10:47:11,438 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:47:11,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:47:11,438 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:47:11,439 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:47:11,439 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:47:11,439 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:47:11,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:47:11,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:47:11,440 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:47:11,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:47:11,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:47:11,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:47:11,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:47:11,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:47:11,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:47:11,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:47:11,442 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:47:11,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:47:11,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:47:11,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:47:11,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:47:11,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:47:11,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:47:11,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:47:11,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:47:11,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:47:11,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:47:11,445 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:47:11,445 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:47:11,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:47:11,445 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a98a47bac7562a35bba31573ebdfd704a9d27baca1b439deea796ac12a0961b [2022-07-12 10:47:11,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:47:11,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:47:11,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:47:11,703 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:47:11,704 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:47:11,705 INFO L432 ainManager$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 [2022-07-12 10:47:11,752 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57debbe4d/8ea67c439cc140608260716ed2dd813d/FLAG6cba987b6 [2022-07-12 10:47:12,387 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:47:12,388 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i [2022-07-12 10:47:12,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57debbe4d/8ea67c439cc140608260716ed2dd813d/FLAG6cba987b6 [2022-07-12 10:47:12,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57debbe4d/8ea67c439cc140608260716ed2dd813d [2022-07-12 10:47:12,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:47:12,541 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:47:12,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:47:12,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:47:12,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:47:12,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:47:12" (1/1) ... [2022-07-12 10:47:12,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c743b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:12, skipping insertion in model container [2022-07-12 10:47:12,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:47:12" (1/1) ... [2022-07-12 10:47:12,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:47:12,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:47:12,846 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] [2022-07-12 10:47:12,852 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] [2022-07-12 10:47:13,421 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:47:13,480 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:13,480 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:13,481 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:13,481 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:13,482 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:13,490 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:13,490 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:13,492 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:13,492 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:13,493 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:13,494 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:13,495 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:13,495 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:13,727 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:47:13,728 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:47:13,728 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:47:13,729 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:47:13,730 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:47:13,730 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:47:13,731 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:47:13,731 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:47:13,735 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:47:13,736 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:47:13,819 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:13,820 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:13,822 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:13,826 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:13,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:47:13,944 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:47:13,962 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] [2022-07-12 10:47:13,963 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] [2022-07-12 10:47:13,986 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:47:14,001 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:14,002 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:14,002 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:14,003 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:14,004 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:14,013 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:14,013 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:14,014 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:14,015 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:14,017 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:14,017 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:14,018 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:14,018 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:14,058 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:47:14,059 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:47:14,060 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:47:14,061 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:47:14,061 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:47:14,062 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:47:14,063 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:47:14,063 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:47:14,064 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:47:14,066 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:47:14,112 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:14,113 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:14,114 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:14,117 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:47:14,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:47:14,310 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:47:14,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:14 WrapperNode [2022-07-12 10:47:14,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:47:14,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:47:14,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:47:14,312 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:47:14,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:14" (1/1) ... [2022-07-12 10:47:14,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:14" (1/1) ... [2022-07-12 10:47:14,452 INFO L137 Inliner]: procedures = 691, calls = 1673, calls flagged for inlining = 52, calls inlined = 7, statements flattened = 695 [2022-07-12 10:47:14,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:47:14,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:47:14,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:47:14,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:47:14,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:14" (1/1) ... [2022-07-12 10:47:14,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:14" (1/1) ... [2022-07-12 10:47:14,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:14" (1/1) ... [2022-07-12 10:47:14,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:14" (1/1) ... [2022-07-12 10:47:14,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:14" (1/1) ... [2022-07-12 10:47:14,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:14" (1/1) ... [2022-07-12 10:47:14,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:14" (1/1) ... [2022-07-12 10:47:14,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:47:14,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:47:14,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:47:14,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:47:14,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:14" (1/1) ... [2022-07-12 10:47:14,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:47:14,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:14,609 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) [2022-07-12 10:47:14,630 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 [2022-07-12 10:47:14,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:47:14,645 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-12 10:47:14,646 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-12 10:47:14,646 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-12 10:47:14,646 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-12 10:47:14,646 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-12 10:47:14,646 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-12 10:47:14,646 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-07-12 10:47:14,647 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-07-12 10:47:14,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:47:14,647 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-12 10:47:14,647 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-12 10:47:14,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 10:47:14,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 10:47:14,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:47:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:47:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 10:47:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-12 10:47:14,648 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-12 10:47:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:47:14,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:47:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-12 10:47:14,649 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-12 10:47:14,649 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-12 10:47:14,649 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-12 10:47:14,649 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-12 10:47:14,649 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-12 10:47:14,650 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-07-12 10:47:14,650 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-07-12 10:47:14,650 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 10:47:14,650 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 10:47:14,650 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-12 10:47:14,650 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-12 10:47:14,650 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-07-12 10:47:14,651 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-07-12 10:47:14,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:47:14,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 10:47:14,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 10:47:14,651 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-12 10:47:14,651 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-12 10:47:14,651 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-12 10:47:14,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-12 10:47:14,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:47:14,652 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-12 10:47:14,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-12 10:47:14,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:47:14,942 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:47:14,944 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:47:15,821 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:47:15,833 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:47:15,833 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:47:15,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:47:15 BoogieIcfgContainer [2022-07-12 10:47:15,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:47:15,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:47:15,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:47:15,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:47:15,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:47:12" (1/3) ... [2022-07-12 10:47:15,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c8a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:47:15, skipping insertion in model container [2022-07-12 10:47:15,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:47:14" (2/3) ... [2022-07-12 10:47:15,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c8a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:47:15, skipping insertion in model container [2022-07-12 10:47:15,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:47:15" (3/3) ... [2022-07-12 10:47:15,846 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_copy_harness.i [2022-07-12 10:47:15,858 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:47:15,858 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:47:15,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:47:15,937 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@5b12f2b8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@729b3153 [2022-07-12 10:47:15,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 10:47:15,942 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) [2022-07-12 10:47:15,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 10:47:15,962 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:15,967 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] [2022-07-12 10:47:15,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:15,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:15,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1428143905, now seen corresponding path program 1 times [2022-07-12 10:47:15,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:15,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490483975] [2022-07-12 10:47:15,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:15,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:16,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:47:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:16,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:47:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:16,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:47:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:16,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:47:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:16,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:47:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:16,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 10:47:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:16,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 10:47:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:16,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 10:47:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:16,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 10:47:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:16,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 10:47:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:16,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:47:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:16,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:47:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:16,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 10:47:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:16,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 10:47:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:16,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:47:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:16,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:47:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:16,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:47:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:16,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:47:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:16,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:47:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:16,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 10:47:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:16,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 10:47:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:16,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 10:47:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:16,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 10:47:16,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:47:16,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490483975] [2022-07-12 10:47:16,927 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-12 10:47:16,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57184901] [2022-07-12 10:47:16,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:16,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:16,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:16,931 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) [2022-07-12 10:47:16,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:47:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:17,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 2347 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 10:47:17,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:47:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-07-12 10:47:17,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:47:17,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57184901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:47:17,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:47:17,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:47:17,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11245604] [2022-07-12 10:47:17,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:47:17,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:47:17,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:47:17,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:47:17,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:47:17,593 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) [2022-07-12 10:47:18,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:47:18,132 INFO L93 Difference]: Finished difference Result 416 states and 618 transitions. [2022-07-12 10:47:18,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:47:18,135 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 [2022-07-12 10:47:18,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:47:18,149 INFO L225 Difference]: With dead ends: 416 [2022-07-12 10:47:18,150 INFO L226 Difference]: Without dead ends: 206 [2022-07-12 10:47:18,157 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 [2022-07-12 10:47:18,161 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 276 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:47:18,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 778 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 10:47:18,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-07-12 10:47:18,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2022-07-12 10:47:18,227 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) [2022-07-12 10:47:18,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 289 transitions. [2022-07-12 10:47:18,231 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 289 transitions. Word has length 145 [2022-07-12 10:47:18,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:47:18,232 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 289 transitions. [2022-07-12 10:47:18,232 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) [2022-07-12 10:47:18,232 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 289 transitions. [2022-07-12 10:47:18,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-12 10:47:18,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:18,235 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] [2022-07-12 10:47:18,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 10:47:18,443 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 [2022-07-12 10:47:18,444 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:18,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:18,444 INFO L85 PathProgramCache]: Analyzing trace with hash 484121766, now seen corresponding path program 1 times [2022-07-12 10:47:18,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:18,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184930295] [2022-07-12 10:47:18,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:18,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:18,521 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:47:18,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [384741725] [2022-07-12 10:47:18,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:18,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:18,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:18,523 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) [2022-07-12 10:47:18,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:47:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:18,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 2483 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:47:18,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:47:19,019 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-07-12 10:47:19,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:47:19,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:47:19,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184930295] [2022-07-12 10:47:19,021 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:47:19,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384741725] [2022-07-12 10:47:19,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384741725] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:47:19,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:47:19,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:47:19,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042922576] [2022-07-12 10:47:19,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:47:19,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:47:19,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:47:19,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:47:19,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:47:19,027 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) [2022-07-12 10:47:19,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:47:19,078 INFO L93 Difference]: Finished difference Result 410 states and 588 transitions. [2022-07-12 10:47:19,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:47:19,079 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 [2022-07-12 10:47:19,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:47:19,086 INFO L225 Difference]: With dead ends: 410 [2022-07-12 10:47:19,086 INFO L226 Difference]: Without dead ends: 211 [2022-07-12 10:47:19,092 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 [2022-07-12 10:47:19,093 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 [2022-07-12 10:47:19,095 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] [2022-07-12 10:47:19,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-07-12 10:47:19,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2022-07-12 10:47:19,119 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) [2022-07-12 10:47:19,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 291 transitions. [2022-07-12 10:47:19,130 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 291 transitions. Word has length 160 [2022-07-12 10:47:19,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:47:19,130 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 291 transitions. [2022-07-12 10:47:19,131 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) [2022-07-12 10:47:19,131 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 291 transitions. [2022-07-12 10:47:19,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-12 10:47:19,133 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:19,133 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] [2022-07-12 10:47:19,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 10:47:19,347 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 [2022-07-12 10:47:19,348 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:19,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:19,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2088842844, now seen corresponding path program 1 times [2022-07-12 10:47:19,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:19,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771723091] [2022-07-12 10:47:19,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:19,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:19,402 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:47:19,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2084448911] [2022-07-12 10:47:19,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:19,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:19,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:19,404 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) [2022-07-12 10:47:19,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 10:47:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:19,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 2488 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 10:47:19,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:47:19,873 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-07-12 10:47:19,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:47:19,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:47:19,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771723091] [2022-07-12 10:47:19,874 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:47:19,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084448911] [2022-07-12 10:47:19,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084448911] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:47:19,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:47:19,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:47:19,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853561891] [2022-07-12 10:47:19,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:47:19,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:47:19,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:47:19,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:47:19,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:47:19,901 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) [2022-07-12 10:47:20,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:47:20,268 INFO L93 Difference]: Finished difference Result 383 states and 533 transitions. [2022-07-12 10:47:20,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:47:20,269 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 [2022-07-12 10:47:20,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:47:20,271 INFO L225 Difference]: With dead ends: 383 [2022-07-12 10:47:20,271 INFO L226 Difference]: Without dead ends: 208 [2022-07-12 10:47:20,272 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 [2022-07-12 10:47:20,273 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, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:47:20,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 769 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 10:47:20,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-12 10:47:20,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-07-12 10:47:20,291 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) [2022-07-12 10:47:20,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 289 transitions. [2022-07-12 10:47:20,294 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 289 transitions. Word has length 160 [2022-07-12 10:47:20,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:47:20,294 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 289 transitions. [2022-07-12 10:47:20,295 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) [2022-07-12 10:47:20,295 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 289 transitions. [2022-07-12 10:47:20,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-12 10:47:20,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:20,297 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] [2022-07-12 10:47:20,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 10:47:20,523 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 [2022-07-12 10:47:20,524 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:20,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:20,524 INFO L85 PathProgramCache]: Analyzing trace with hash 2066938953, now seen corresponding path program 2 times [2022-07-12 10:47:20,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:20,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655793947] [2022-07-12 10:47:20,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:20,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:20,604 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:47:20,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538366436] [2022-07-12 10:47:20,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:47:20,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:20,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:20,608 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) [2022-07-12 10:47:20,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 10:47:20,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 10:47:20,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:47:20,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 10:47:20,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:47:21,021 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-07-12 10:47:21,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:47:21,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:47:21,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655793947] [2022-07-12 10:47:21,022 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:47:21,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538366436] [2022-07-12 10:47:21,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538366436] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:47:21,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:47:21,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:47:21,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486485037] [2022-07-12 10:47:21,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:47:21,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:47:21,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:47:21,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:47:21,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:47:21,025 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) [2022-07-12 10:47:21,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:47:21,066 INFO L93 Difference]: Finished difference Result 269 states and 367 transitions. [2022-07-12 10:47:21,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:47:21,066 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 [2022-07-12 10:47:21,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:47:21,071 INFO L225 Difference]: With dead ends: 269 [2022-07-12 10:47:21,071 INFO L226 Difference]: Without dead ends: 213 [2022-07-12 10:47:21,071 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 [2022-07-12 10:47:21,074 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 [2022-07-12 10:47:21,075 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] [2022-07-12 10:47:21,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-07-12 10:47:21,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-07-12 10:47:21,102 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) [2022-07-12 10:47:21,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 295 transitions. [2022-07-12 10:47:21,105 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 295 transitions. Word has length 175 [2022-07-12 10:47:21,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:47:21,106 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 295 transitions. [2022-07-12 10:47:21,106 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) [2022-07-12 10:47:21,106 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 295 transitions. [2022-07-12 10:47:21,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-12 10:47:21,109 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:21,110 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] [2022-07-12 10:47:21,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 10:47:21,334 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 [2022-07-12 10:47:21,334 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:21,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:21,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1798085459, now seen corresponding path program 1 times [2022-07-12 10:47:21,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:21,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588592598] [2022-07-12 10:47:21,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:21,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:21,406 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:47:21,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [490688409] [2022-07-12 10:47:21,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:21,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:21,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:21,407 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) [2022-07-12 10:47:21,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 10:47:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:21,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 2633 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 10:47:21,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:47:21,907 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-07-12 10:47:21,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:47:21,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:47:21,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588592598] [2022-07-12 10:47:21,908 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:47:21,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490688409] [2022-07-12 10:47:21,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490688409] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:47:21,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:47:21,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:47:21,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511598956] [2022-07-12 10:47:21,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:47:21,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:47:21,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:47:21,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:47:21,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:47:21,910 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) [2022-07-12 10:47:22,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:47:22,261 INFO L93 Difference]: Finished difference Result 382 states and 524 transitions. [2022-07-12 10:47:22,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:47:22,261 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 [2022-07-12 10:47:22,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:47:22,263 INFO L225 Difference]: With dead ends: 382 [2022-07-12 10:47:22,264 INFO L226 Difference]: Without dead ends: 213 [2022-07-12 10:47:22,265 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 [2022-07-12 10:47:22,265 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 305 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:47:22,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 914 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 10:47:22,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-07-12 10:47:22,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-07-12 10:47:22,277 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) [2022-07-12 10:47:22,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 290 transitions. [2022-07-12 10:47:22,279 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 290 transitions. Word has length 181 [2022-07-12 10:47:22,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:47:22,280 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 290 transitions. [2022-07-12 10:47:22,280 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) [2022-07-12 10:47:22,280 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 290 transitions. [2022-07-12 10:47:22,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-12 10:47:22,282 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:22,282 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] [2022-07-12 10:47:22,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 10:47:22,495 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 [2022-07-12 10:47:22,495 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:22,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:22,496 INFO L85 PathProgramCache]: Analyzing trace with hash -71678011, now seen corresponding path program 1 times [2022-07-12 10:47:22,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:22,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438895671] [2022-07-12 10:47:22,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:22,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:22,558 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:47:22,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2136557317] [2022-07-12 10:47:22,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:22,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:22,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:22,561 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) [2022-07-12 10:47:22,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 10:47:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:22,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 2787 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 10:47:22,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:47:23,077 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-07-12 10:47:23,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:47:23,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:47:23,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438895671] [2022-07-12 10:47:23,078 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:47:23,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136557317] [2022-07-12 10:47:23,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136557317] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:47:23,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:47:23,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:47:23,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686001095] [2022-07-12 10:47:23,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:47:23,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:47:23,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:47:23,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:47:23,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:47:23,080 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) [2022-07-12 10:47:23,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:47:23,403 INFO L93 Difference]: Finished difference Result 379 states and 509 transitions. [2022-07-12 10:47:23,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:47:23,404 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 [2022-07-12 10:47:23,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:47:23,406 INFO L225 Difference]: With dead ends: 379 [2022-07-12 10:47:23,406 INFO L226 Difference]: Without dead ends: 211 [2022-07-12 10:47:23,407 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 [2022-07-12 10:47:23,407 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 304 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:47:23,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 909 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 10:47:23,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-07-12 10:47:23,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2022-07-12 10:47:23,417 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) [2022-07-12 10:47:23,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 283 transitions. [2022-07-12 10:47:23,419 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 283 transitions. Word has length 195 [2022-07-12 10:47:23,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:47:23,420 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 283 transitions. [2022-07-12 10:47:23,420 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) [2022-07-12 10:47:23,420 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 283 transitions. [2022-07-12 10:47:23,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-07-12 10:47:23,422 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:23,422 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] [2022-07-12 10:47:23,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 10:47:23,627 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 [2022-07-12 10:47:23,628 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:23,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:23,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1712202978, now seen corresponding path program 1 times [2022-07-12 10:47:23,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:23,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54239093] [2022-07-12 10:47:23,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:23,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:23,692 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:47:23,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [420542600] [2022-07-12 10:47:23,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:23,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:23,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:23,695 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) [2022-07-12 10:47:23,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 10:47:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:24,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 2928 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 10:47:24,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:47:24,220 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2022-07-12 10:47:24,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:47:24,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:47:24,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54239093] [2022-07-12 10:47:24,221 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:47:24,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420542600] [2022-07-12 10:47:24,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420542600] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:47:24,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:47:24,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:47:24,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652378440] [2022-07-12 10:47:24,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:47:24,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:47:24,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:47:24,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:47:24,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:47:24,224 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) [2022-07-12 10:47:24,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:47:24,267 INFO L93 Difference]: Finished difference Result 269 states and 354 transitions. [2022-07-12 10:47:24,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:47:24,267 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 [2022-07-12 10:47:24,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:47:24,269 INFO L225 Difference]: With dead ends: 269 [2022-07-12 10:47:24,269 INFO L226 Difference]: Without dead ends: 220 [2022-07-12 10:47:24,270 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 [2022-07-12 10:47:24,270 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 [2022-07-12 10:47:24,270 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] [2022-07-12 10:47:24,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-07-12 10:47:24,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 213. [2022-07-12 10:47:24,280 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) [2022-07-12 10:47:24,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 285 transitions. [2022-07-12 10:47:24,282 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 285 transitions. Word has length 210 [2022-07-12 10:47:24,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:47:24,282 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 285 transitions. [2022-07-12 10:47:24,283 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) [2022-07-12 10:47:24,283 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 285 transitions. [2022-07-12 10:47:24,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-12 10:47:24,285 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:24,285 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] [2022-07-12 10:47:24,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 10:47:24,499 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 [2022-07-12 10:47:24,499 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:24,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:24,500 INFO L85 PathProgramCache]: Analyzing trace with hash 870357412, now seen corresponding path program 1 times [2022-07-12 10:47:24,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:24,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146252192] [2022-07-12 10:47:24,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:24,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:24,564 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:47:24,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2085618004] [2022-07-12 10:47:24,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:24,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:24,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:24,566 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) [2022-07-12 10:47:24,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 10:47:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:25,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 3056 conjuncts, 114 conjunts are in the unsatisfiable core [2022-07-12 10:47:25,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:47:25,635 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 [2022-07-12 10:47:25,685 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:47:25,685 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 [2022-07-12 10:47:25,694 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 [2022-07-12 10:47:25,712 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:47:25,712 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 [2022-07-12 10:47:25,720 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 [2022-07-12 10:47:27,898 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 [2022-07-12 10:47:52,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:47:52,515 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 [2022-07-12 10:47:52,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:47:52,520 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 [2022-07-12 10:47:52,892 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 [2022-07-12 10:47:52,895 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 [2022-07-12 10:47:52,984 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 312 proven. 33 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-07-12 10:47:52,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:47:59,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:47:59,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146252192] [2022-07-12 10:47:59,719 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:47:59,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085618004] [2022-07-12 10:47:59,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085618004] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:47:59,720 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:47:59,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-07-12 10:47:59,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938923631] [2022-07-12 10:47:59,720 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 10:47:59,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-12 10:47:59,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:47:59,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-12 10:47:59,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1018, Unknown=12, NotChecked=130, Total=1260 [2022-07-12 10:47:59,721 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) [2022-07-12 10:48:19,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:48:19,503 INFO L93 Difference]: Finished difference Result 432 states and 599 transitions. [2022-07-12 10:48:19,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:48:19,504 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 [2022-07-12 10:48:19,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:48:19,506 INFO L225 Difference]: With dead ends: 432 [2022-07-12 10:48:19,506 INFO L226 Difference]: Without dead ends: 252 [2022-07-12 10:48:19,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 304 SyntacticMatches, 13 SemanticMatches, 45 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 51.6s TimeCoverageRelationStatistics Valid=183, Invalid=1785, Unknown=20, NotChecked=174, Total=2162 [2022-07-12 10:48:19,508 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 97 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 2082 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 3594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1434 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:48:19,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 1812 Invalid, 3594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2082 Invalid, 0 Unknown, 1434 Unchecked, 1.4s Time] [2022-07-12 10:48:19,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-07-12 10:48:19,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 239. [2022-07-12 10:48:19,523 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) [2022-07-12 10:48:19,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 345 transitions. [2022-07-12 10:48:19,525 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 345 transitions. Word has length 226 [2022-07-12 10:48:19,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:48:19,526 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 345 transitions. [2022-07-12 10:48:19,526 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) [2022-07-12 10:48:19,527 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 345 transitions. [2022-07-12 10:48:19,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-07-12 10:48:19,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:48:19,529 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] [2022-07-12 10:48:19,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 10:48:19,751 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 [2022-07-12 10:48:19,752 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:48:19,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:48:19,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1241589422, now seen corresponding path program 2 times [2022-07-12 10:48:19,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:48:19,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192708925] [2022-07-12 10:48:19,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:48:19,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:48:19,857 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:48:19,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965983820] [2022-07-12 10:48:19,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:48:19,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:48:19,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:48:19,860 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) [2022-07-12 10:48:19,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 10:48:21,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:48:21,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:48:21,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 3060 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-12 10:48:21,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:48:21,903 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-07-12 10:48:21,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:48:21,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:48:21,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192708925] [2022-07-12 10:48:21,903 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:48:21,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965983820] [2022-07-12 10:48:21,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965983820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:48:21,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:48:21,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 10:48:21,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985312146] [2022-07-12 10:48:21,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:48:21,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 10:48:21,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:48:21,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 10:48:21,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:48:21,906 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) [2022-07-12 10:48:22,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:48:22,210 INFO L93 Difference]: Finished difference Result 436 states and 638 transitions. [2022-07-12 10:48:22,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:48:22,210 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 [2022-07-12 10:48:22,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:48:22,212 INFO L225 Difference]: With dead ends: 436 [2022-07-12 10:48:22,212 INFO L226 Difference]: Without dead ends: 246 [2022-07-12 10:48:22,213 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 [2022-07-12 10:48:22,214 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 11 mSDsluCounter, 2668 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2945 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 [2022-07-12 10:48:22,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2945 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:48:22,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-07-12 10:48:22,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2022-07-12 10:48:22,227 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) [2022-07-12 10:48:22,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 363 transitions. [2022-07-12 10:48:22,229 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 363 transitions. Word has length 232 [2022-07-12 10:48:22,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:48:22,229 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 363 transitions. [2022-07-12 10:48:22,230 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) [2022-07-12 10:48:22,230 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 363 transitions. [2022-07-12 10:48:22,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-07-12 10:48:22,232 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:48:22,233 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] [2022-07-12 10:48:22,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 10:48:22,459 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 [2022-07-12 10:48:22,459 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:48:22,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:48:22,460 INFO L85 PathProgramCache]: Analyzing trace with hash 413253233, now seen corresponding path program 1 times [2022-07-12 10:48:22,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:48:22,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119274736] [2022-07-12 10:48:22,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:48:22,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:48:22,538 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:48:22,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051400825] [2022-07-12 10:48:22,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:48:22,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:48:22,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:48:22,540 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) [2022-07-12 10:48:22,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 10:48:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:48:23,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 3107 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-12 10:48:23,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:48:23,101 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 [2022-07-12 10:48:23,319 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 263 proven. 17 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-07-12 10:48:23,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:48:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 50 proven. 35 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2022-07-12 10:48:24,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:48:24,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119274736] [2022-07-12 10:48:24,110 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:48:24,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051400825] [2022-07-12 10:48:24,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051400825] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:48:24,110 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:48:24,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 26 [2022-07-12 10:48:24,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659332223] [2022-07-12 10:48:24,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:48:24,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:48:24,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:48:24,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:48:24,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:48:24,112 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) [2022-07-12 10:48:25,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:48:25,040 INFO L93 Difference]: Finished difference Result 446 states and 655 transitions. [2022-07-12 10:48:25,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:48:25,041 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 [2022-07-12 10:48:25,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:48:25,043 INFO L225 Difference]: With dead ends: 446 [2022-07-12 10:48:25,043 INFO L226 Difference]: Without dead ends: 260 [2022-07-12 10:48:25,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 473 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2022-07-12 10:48:25,045 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 24 mSDsluCounter, 4990 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 5252 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 10:48:25,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 5252 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 10:48:25,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-07-12 10:48:25,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 246. [2022-07-12 10:48:25,059 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) [2022-07-12 10:48:25,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 361 transitions. [2022-07-12 10:48:25,061 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 361 transitions. Word has length 250 [2022-07-12 10:48:25,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:48:25,063 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 361 transitions. [2022-07-12 10:48:25,063 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) [2022-07-12 10:48:25,063 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 361 transitions. [2022-07-12 10:48:25,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-07-12 10:48:25,065 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:48:25,065 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] [2022-07-12 10:48:25,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 10:48:25,293 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 [2022-07-12 10:48:25,293 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:48:25,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:48:25,294 INFO L85 PathProgramCache]: Analyzing trace with hash -905056813, now seen corresponding path program 2 times [2022-07-12 10:48:25,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:48:25,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680686792] [2022-07-12 10:48:25,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:48:25,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:48:25,371 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:48:25,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [587848162] [2022-07-12 10:48:25,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:48:25,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:48:25,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:48:25,373 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) [2022-07-12 10:48:25,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 10:48:27,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:48:27,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:48:27,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 3095 conjuncts, 83 conjunts are in the unsatisfiable core [2022-07-12 10:48:27,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:48:27,126 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 [2022-07-12 10:48:29,641 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 [2022-07-12 10:48:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 337 proven. 18 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-07-12 10:48:51,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:48:54,716 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 [2022-07-12 10:48:54,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:48:54,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680686792] [2022-07-12 10:48:54,717 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:48:54,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587848162] [2022-07-12 10:48:54,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587848162] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:48:54,718 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:48:54,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-07-12 10:48:54,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844948507] [2022-07-12 10:48:54,718 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 10:48:54,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-12 10:48:54,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:48:54,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-12 10:48:54,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=8, NotChecked=94, Total=702 [2022-07-12 10:48:54,719 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) [2022-07-12 10:48:56,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:48:56,609 INFO L93 Difference]: Finished difference Result 456 states and 663 transitions. [2022-07-12 10:48:56,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 10:48:56,609 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 [2022-07-12 10:48:56,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:48:56,611 INFO L225 Difference]: With dead ends: 456 [2022-07-12 10:48:56,611 INFO L226 Difference]: Without dead ends: 270 [2022-07-12 10:48:56,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 280 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=137, Invalid=1345, Unknown=8, NotChecked=150, Total=1640 [2022-07-12 10:48:56,613 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 120 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 1687 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 3267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1476 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:48:56,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 1695 Invalid, 3267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1687 Invalid, 0 Unknown, 1476 Unchecked, 1.3s Time] [2022-07-12 10:48:56,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-07-12 10:48:56,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 250. [2022-07-12 10:48:56,627 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) [2022-07-12 10:48:56,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 363 transitions. [2022-07-12 10:48:56,629 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 363 transitions. Word has length 232 [2022-07-12 10:48:56,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:48:56,630 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 363 transitions. [2022-07-12 10:48:56,630 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) [2022-07-12 10:48:56,630 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 363 transitions. [2022-07-12 10:48:56,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-07-12 10:48:56,632 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:48:56,632 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] [2022-07-12 10:48:56,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 10:48:56,852 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 [2022-07-12 10:48:56,853 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:48:56,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:48:56,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1286019851, now seen corresponding path program 1 times [2022-07-12 10:48:56,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:48:56,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97593499] [2022-07-12 10:48:56,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:48:56,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:48:56,917 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:48:56,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1361859328] [2022-07-12 10:48:56,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:48:56,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:48:56,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:48:56,919 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) [2022-07-12 10:48:56,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 10:48:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:48:57,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 3095 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:48:57,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:48:57,551 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-07-12 10:48:57,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:48:57,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:48:57,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97593499] [2022-07-12 10:48:57,552 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:48:57,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361859328] [2022-07-12 10:48:57,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361859328] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:48:57,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:48:57,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:48:57,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502370148] [2022-07-12 10:48:57,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:48:57,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:48:57,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:48:57,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:48:57,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:48:57,553 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) [2022-07-12 10:48:57,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:48:57,743 INFO L93 Difference]: Finished difference Result 489 states and 757 transitions. [2022-07-12 10:48:57,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:48:57,743 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 [2022-07-12 10:48:57,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:48:57,746 INFO L225 Difference]: With dead ends: 489 [2022-07-12 10:48:57,746 INFO L226 Difference]: Without dead ends: 260 [2022-07-12 10:48:57,747 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 [2022-07-12 10:48:57,748 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 [2022-07-12 10:48:57,748 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] [2022-07-12 10:48:57,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-07-12 10:48:57,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 252. [2022-07-12 10:48:57,762 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) [2022-07-12 10:48:57,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 365 transitions. [2022-07-12 10:48:57,764 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 365 transitions. Word has length 234 [2022-07-12 10:48:57,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:48:57,765 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 365 transitions. [2022-07-12 10:48:57,765 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) [2022-07-12 10:48:57,765 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 365 transitions. [2022-07-12 10:48:57,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-07-12 10:48:57,767 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:48:57,767 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] [2022-07-12 10:48:57,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-12 10:48:57,983 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 [2022-07-12 10:48:57,983 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:48:57,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:48:57,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1526259597, now seen corresponding path program 1 times [2022-07-12 10:48:57,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:48:57,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022985987] [2022-07-12 10:48:57,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:48:57,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:48:58,068 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:48:58,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151362017] [2022-07-12 10:48:58,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:48:58,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:48:58,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:48:58,071 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) [2022-07-12 10:48:58,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 10:48:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:48:58,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 3100 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-12 10:48:58,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:48:58,688 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 [2022-07-12 10:48:58,763 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-12 10:48:58,763 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 [2022-07-12 10:49:00,865 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1953 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1953)) |c_#memory_$Pointer$.base|)) is different from true [2022-07-12 10:49:18,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:49:18,705 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-07-12 10:49:18,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:49:18,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:49:18,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022985987] [2022-07-12 10:49:18,706 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:49:18,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151362017] [2022-07-12 10:49:18,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151362017] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:49:18,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:49:18,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-12 10:49:18,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427923040] [2022-07-12 10:49:18,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:49:18,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-12 10:49:18,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:49:18,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-12 10:49:18,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=255, Unknown=7, NotChecked=32, Total=342 [2022-07-12 10:49:18,707 INFO L87 Difference]: Start difference. First operand 252 states and 365 transitions. Second operand has 19 states, 17 states have (on average 5.529411764705882) internal successors, (94), 16 states have internal predecessors, (94), 8 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2022-07-12 10:49:19,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:49:19,665 INFO L93 Difference]: Finished difference Result 529 states and 804 transitions. [2022-07-12 10:49:19,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:49:19,665 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 [2022-07-12 10:49:19,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:49:19,669 INFO L225 Difference]: With dead ends: 529 [2022-07-12 10:49:19,669 INFO L226 Difference]: Without dead ends: 326 [2022-07-12 10:49:19,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=66, Invalid=393, Unknown=7, NotChecked=40, Total=506 [2022-07-12 10:49:19,674 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 132 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 3166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1733 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 10:49:19,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1917 Invalid, 3166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1347 Invalid, 0 Unknown, 1733 Unchecked, 0.8s Time] [2022-07-12 10:49:19,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-07-12 10:49:19,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 258. [2022-07-12 10:49:19,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 154 states have (on average 1.1428571428571428) internal successors, (176), 159 states have internal predecessors, (176), 76 states have call successors, (76), 21 states have call predecessors, (76), 27 states have return successors, (120), 77 states have call predecessors, (120), 75 states have call successors, (120) [2022-07-12 10:49:19,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 372 transitions. [2022-07-12 10:49:19,697 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 372 transitions. Word has length 234 [2022-07-12 10:49:19,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:49:19,698 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 372 transitions. [2022-07-12 10:49:19,698 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) [2022-07-12 10:49:19,699 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 372 transitions. [2022-07-12 10:49:19,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-12 10:49:19,700 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:49:19,700 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] [2022-07-12 10:49:19,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-12 10:49:19,911 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 [2022-07-12 10:49:19,912 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:49:19,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:49:19,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1862828068, now seen corresponding path program 1 times [2022-07-12 10:49:19,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:49:19,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873352918] [2022-07-12 10:49:19,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:49:19,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:49:19,975 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:49:19,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1222870539] [2022-07-12 10:49:19,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:49:19,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:49:19,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:49:19,977 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) [2022-07-12 10:49:19,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-12 10:49:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:20,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 99 conjunts are in the unsatisfiable core [2022-07-12 10:49:20,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:49:20,561 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-12 10:49:20,561 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 [2022-07-12 10:49:20,806 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-12 10:49:20,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2022-07-12 10:49:20,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:49:20,814 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 [2022-07-12 10:49:21,015 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2143 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2143))) (exists ((v_ArrVal_2142 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2142)))) is different from true [2022-07-12 10:49:21,555 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 210 proven. 8 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-07-12 10:49:21,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:49:23,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:49:23,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873352918] [2022-07-12 10:49:23,875 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:49:23,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222870539] [2022-07-12 10:49:23,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222870539] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:49:23,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:49:23,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-07-12 10:49:23,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987992862] [2022-07-12 10:49:23,876 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 10:49:23,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-12 10:49:23,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:49:23,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-12 10:49:23,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=728, Unknown=7, NotChecked=54, Total=870 [2022-07-12 10:49:23,878 INFO L87 Difference]: Start difference. First operand 258 states and 372 transitions. Second operand has 24 states, 20 states have (on average 4.25) internal successors, (85), 19 states have internal predecessors, (85), 8 states have call successors, (30), 7 states have call predecessors, (30), 8 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) [2022-07-12 10:49:25,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:49:25,364 INFO L93 Difference]: Finished difference Result 529 states and 763 transitions. [2022-07-12 10:49:25,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:49:25,364 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 4.25) internal successors, (85), 19 states have internal predecessors, (85), 8 states have call successors, (30), 7 states have call predecessors, (30), 8 states have return successors, (29), 7 states have call predecessors, (29), 8 states have call successors, (29) Word has length 230 [2022-07-12 10:49:25,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:49:25,366 INFO L225 Difference]: With dead ends: 529 [2022-07-12 10:49:25,366 INFO L226 Difference]: Without dead ends: 291 [2022-07-12 10:49:25,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 377 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=170, Invalid=1450, Unknown=24, NotChecked=78, Total=1722 [2022-07-12 10:49:25,369 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 232 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 3381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1587 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:49:25,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1482 Invalid, 3381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 1511 Invalid, 0 Unknown, 1587 Unchecked, 1.1s Time] [2022-07-12 10:49:25,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-07-12 10:49:25,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 273. [2022-07-12 10:49:25,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 164 states have (on average 1.1341463414634145) internal successors, (186), 170 states have internal predecessors, (186), 77 states have call successors, (77), 24 states have call predecessors, (77), 31 states have return successors, (139), 78 states have call predecessors, (139), 76 states have call successors, (139) [2022-07-12 10:49:25,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 402 transitions. [2022-07-12 10:49:25,387 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 402 transitions. Word has length 230 [2022-07-12 10:49:25,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:49:25,388 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 402 transitions. [2022-07-12 10:49:25,388 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) [2022-07-12 10:49:25,388 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 402 transitions. [2022-07-12 10:49:25,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-12 10:49:25,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:49:25,390 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] [2022-07-12 10:49:25,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-12 10:49:25,615 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 [2022-07-12 10:49:25,615 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:49:25,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:49:25,616 INFO L85 PathProgramCache]: Analyzing trace with hash 664537688, now seen corresponding path program 2 times [2022-07-12 10:49:25,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:49:25,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748010227] [2022-07-12 10:49:25,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:49:25,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:49:25,683 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:49:25,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [762737959] [2022-07-12 10:49:25,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:49:25,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:49:25,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:49:25,685 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) [2022-07-12 10:49:25,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-12 10:49:26,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:49:26,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:49:26,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 96 conjunts are in the unsatisfiable core [2022-07-12 10:49:26,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:49:26,927 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-12 10:49:27,333 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2339 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_2339))) (exists ((v_ArrVal_2338 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_2338) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-12 10:49:27,344 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 [2022-07-12 10:49:27,349 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 [2022-07-12 10:49:29,435 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2341 Int) (v_ArrVal_2343 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2341))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2343)) |c_#memory_$Pointer$.base|))) is different from true [2022-07-12 10:49:31,450 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2341 Int) (v_ArrVal_2343 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2341))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2343))))) is different from true [2022-07-12 10:49:31,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:49:31,488 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 [2022-07-12 10:49:31,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:49:31,493 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 [2022-07-12 10:49:31,759 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 [2022-07-12 10:49:31,761 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 [2022-07-12 10:49:31,834 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 306 proven. 34 refuted. 0 times theorem prover too weak. 169 trivial. 7 not checked. [2022-07-12 10:49:31,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:49:34,289 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2357 Int) (v_ArrVal_2356 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_142| Int)) (= (let ((.cse0 (+ 32 |c_ULTIMATE.start_aws_array_list_copy_harness_~#from~0#1.offset|))) (+ (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_142| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_142|) 0 v_ArrVal_2357)) |c_ULTIMATE.start_aws_array_list_copy_harness_~#from~0#1.base|) .cse0) (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_142| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_142|) 0 v_ArrVal_2356)) |c_ULTIMATE.start_aws_array_list_copy_harness_~#from~0#1.base|) .cse0))) 0)) is different from false [2022-07-12 10:49:34,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:49:34,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748010227] [2022-07-12 10:49:34,290 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:49:34,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762737959] [2022-07-12 10:49:34,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762737959] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:49:34,291 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:49:34,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-07-12 10:49:34,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251756815] [2022-07-12 10:49:34,291 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 10:49:34,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-12 10:49:34,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:49:34,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-12 10:49:34,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=589, Unknown=4, NotChecked=204, Total=870 [2022-07-12 10:49:34,292 INFO L87 Difference]: Start difference. First operand 273 states and 402 transitions. Second operand has 21 states, 19 states have (on average 5.157894736842105) internal successors, (98), 21 states have internal predecessors, (98), 11 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (31), 10 states have call predecessors, (31), 11 states have call successors, (31) [2022-07-12 10:49:52,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:49:52,840 INFO L93 Difference]: Finished difference Result 493 states and 724 transitions. [2022-07-12 10:49:52,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:49:52,840 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.157894736842105) internal successors, (98), 21 states have internal predecessors, (98), 11 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (31), 10 states have call predecessors, (31), 11 states have call successors, (31) Word has length 230 [2022-07-12 10:49:52,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:49:52,842 INFO L225 Difference]: With dead ends: 493 [2022-07-12 10:49:52,843 INFO L226 Difference]: Without dead ends: 282 [2022-07-12 10:49:52,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 316 SyntacticMatches, 13 SemanticMatches, 44 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=187, Invalid=1540, Unknown=11, NotChecked=332, Total=2070 [2022-07-12 10:49:52,845 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 113 mSDsluCounter, 1511 mSDsCounter, 0 mSdLazyCounter, 2720 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 4300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1491 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:49:52,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1747 Invalid, 4300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2720 Invalid, 0 Unknown, 1491 Unchecked, 2.0s Time] [2022-07-12 10:49:52,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-07-12 10:49:52,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 274. [2022-07-12 10:49:52,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 164 states have (on average 1.1341463414634145) internal successors, (186), 170 states have internal predecessors, (186), 78 states have call successors, (78), 24 states have call predecessors, (78), 31 states have return successors, (140), 79 states have call predecessors, (140), 77 states have call successors, (140) [2022-07-12 10:49:52,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 404 transitions. [2022-07-12 10:49:52,864 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 404 transitions. Word has length 230 [2022-07-12 10:49:52,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:49:52,864 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 404 transitions. [2022-07-12 10:49:52,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.157894736842105) internal successors, (98), 21 states have internal predecessors, (98), 11 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (31), 10 states have call predecessors, (31), 11 states have call successors, (31) [2022-07-12 10:49:52,865 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 404 transitions. [2022-07-12 10:49:52,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-07-12 10:49:52,867 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:49:52,867 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:49:52,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-12 10:49:53,083 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 [2022-07-12 10:49:53,083 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:49:53,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:49:53,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1507962452, now seen corresponding path program 1 times [2022-07-12 10:49:53,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:49:53,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927405830] [2022-07-12 10:49:53,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:49:53,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:49:53,159 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:49:53,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1755813062] [2022-07-12 10:49:53,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:49:53,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:49:53,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:49:53,161 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) [2022-07-12 10:49:53,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-12 10:49:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:49:53,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 3074 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-12 10:49:53,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:49:53,836 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 186 proven. 3 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-07-12 10:49:53,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:49:54,472 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 63 proven. 19 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2022-07-12 10:49:54,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:49:54,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927405830] [2022-07-12 10:49:54,473 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:49:54,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755813062] [2022-07-12 10:49:54,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755813062] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:49:54,473 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:49:54,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 21 [2022-07-12 10:49:54,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833427749] [2022-07-12 10:49:54,473 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:49:54,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-12 10:49:54,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:49:54,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-12 10:49:54,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2022-07-12 10:49:54,475 INFO L87 Difference]: Start difference. First operand 274 states and 404 transitions. Second operand has 21 states, 18 states have (on average 5.444444444444445) internal successors, (98), 14 states have internal predecessors, (98), 5 states have call successors, (33), 3 states have call predecessors, (33), 7 states have return successors, (35), 8 states have call predecessors, (35), 4 states have call successors, (35) [2022-07-12 10:49:54,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:49:54,981 INFO L93 Difference]: Finished difference Result 463 states and 681 transitions. [2022-07-12 10:49:54,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:49:54,983 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 5.444444444444445) internal successors, (98), 14 states have internal predecessors, (98), 5 states have call successors, (33), 3 states have call predecessors, (33), 7 states have return successors, (35), 8 states have call predecessors, (35), 4 states have call successors, (35) Word has length 242 [2022-07-12 10:49:54,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:49:54,986 INFO L225 Difference]: With dead ends: 463 [2022-07-12 10:49:54,986 INFO L226 Difference]: Without dead ends: 274 [2022-07-12 10:49:54,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 462 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2022-07-12 10:49:54,988 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 12 mSDsluCounter, 4495 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4770 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:49:54,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4770 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 10:49:54,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-07-12 10:49:55,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2022-07-12 10:49:55,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 164 states have (on average 1.1341463414634145) internal successors, (186), 170 states have internal predecessors, (186), 78 states have call successors, (78), 24 states have call predecessors, (78), 31 states have return successors, (138), 79 states have call predecessors, (138), 77 states have call successors, (138) [2022-07-12 10:49:55,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 402 transitions. [2022-07-12 10:49:55,006 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 402 transitions. Word has length 242 [2022-07-12 10:49:55,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:49:55,006 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 402 transitions. [2022-07-12 10:49:55,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 5.444444444444445) internal successors, (98), 14 states have internal predecessors, (98), 5 states have call successors, (33), 3 states have call predecessors, (33), 7 states have return successors, (35), 8 states have call predecessors, (35), 4 states have call successors, (35) [2022-07-12 10:49:55,007 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 402 transitions. [2022-07-12 10:49:55,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-12 10:49:55,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:49:55,009 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:49:55,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-12 10:49:55,219 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 [2022-07-12 10:49:55,219 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:49:55,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:49:55,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1468116584, now seen corresponding path program 2 times [2022-07-12 10:49:55,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:49:55,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6218494] [2022-07-12 10:49:55,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:49:55,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:49:55,273 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:49:55,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432024619] [2022-07-12 10:49:55,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:49:55,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:49:55,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:49:55,275 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) [2022-07-12 10:49:55,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-12 10:49:56,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:49:56,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:49:56,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 137 conjunts are in the unsatisfiable core [2022-07-12 10:49:56,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:49:59,335 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2690 Int) (v_ArrVal_2691 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2688 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2691))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2690))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2688)) |c_#memory_int|))) is different from true [2022-07-12 10:50:01,362 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2690 Int) (v_ArrVal_2691 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2688 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2690))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2688)) |c_#memory_int|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2691))))) is different from true [2022-07-12 10:50:01,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:50:01,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2022-07-12 10:50:01,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:50:01,432 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2022-07-12 10:50:01,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:50:01,436 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-12 10:50:01,908 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2693 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2693) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2692 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2692))) (exists ((v_ArrVal_2694 Int)) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2694)) |c_#memory_int|))) is different from true [2022-07-12 10:50:26,642 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 207 proven. 12 refuted. 0 times theorem prover too weak. 274 trivial. 23 not checked. [2022-07-12 10:50:26,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:50:27,236 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2714 (Array Int Int)) (v_ArrVal_2713 (Array Int Int)) (v_ArrVal_2712 Int) (|v_aws_array_list_is_valid_~#required_size~0.base_91| Int)) (let ((.cse0 (+ |c_ULTIMATE.start_aws_array_list_copy_~from#1.offset| 32))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_array_list_is_valid_~#required_size~0.base_91| v_ArrVal_2713) |c_ULTIMATE.start_aws_array_list_copy_~from#1.base|) .cse0) 0)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_array_list_is_valid_~#required_size~0.base_91| v_ArrVal_2714) |c_ULTIMATE.start_aws_array_list_copy_~from#1.base|) .cse0) 0)) (not (= (mod (select (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_91| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_91|) 0 v_ArrVal_2712)) |c_ULTIMATE.start_aws_array_list_copy_~from#1.base|) (+ |c_ULTIMATE.start_aws_array_list_copy_~from#1.offset| 8)) 18446744073709551616) 0))))) is different from false [2022-07-12 10:50:27,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:50:27,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6218494] [2022-07-12 10:50:27,239 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:50:27,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432024619] [2022-07-12 10:50:27,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432024619] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:50:27,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:50:27,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2022-07-12 10:50:27,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339604585] [2022-07-12 10:50:27,240 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 10:50:27,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-12 10:50:27,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:50:27,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-12 10:50:27,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=830, Unknown=24, NotChecked=244, Total=1190 [2022-07-12 10:50:27,241 INFO L87 Difference]: Start difference. First operand 274 states and 402 transitions. Second operand has 31 states, 28 states have (on average 3.392857142857143) internal successors, (95), 28 states have internal predecessors, (95), 12 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 12 states have call predecessors, (31), 11 states have call successors, (31) [2022-07-12 10:50:27,492 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2693 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2693) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2692 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2692))) (exists ((v_ArrVal_2690 Int) (v_ArrVal_2691 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2688 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2691))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2690))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2688)) |c_#memory_int|))) (exists ((v_ArrVal_2694 Int)) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2694)) |c_#memory_int|))) is different from true