./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 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_push_back_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 1c506089032d4cdff4e7555a7f0fed6846d5bd185846ae9cd372b1dcc3fd0c8a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-16 20:15:13,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-16 20:15:13,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-16 20:15:13,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-16 20:15:13,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-16 20:15:13,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-16 20:15:13,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-16 20:15:13,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-16 20:15:13,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-16 20:15:13,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-16 20:15:13,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-16 20:15:13,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-16 20:15:13,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-16 20:15:13,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-16 20:15:13,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-16 20:15:13,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-16 20:15:13,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-16 20:15:13,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-16 20:15:13,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-16 20:15:13,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-16 20:15:13,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-16 20:15:13,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-16 20:15:13,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-16 20:15:13,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-16 20:15:13,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-16 20:15:13,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-16 20:15:13,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-16 20:15:13,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-16 20:15:13,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-16 20:15:13,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-16 20:15:13,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-16 20:15:13,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-16 20:15:13,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-16 20:15:13,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-16 20:15:13,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-16 20:15:13,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-16 20:15:13,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-16 20:15:13,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-16 20:15:13,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-16 20:15:13,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-16 20:15:13,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-16 20:15:13,304 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-16 20:15:13,328 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-16 20:15:13,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-16 20:15:13,329 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-16 20:15:13,329 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-16 20:15:13,330 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-16 20:15:13,330 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-16 20:15:13,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-16 20:15:13,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-16 20:15:13,330 INFO L138 SettingsManager]: * Use SBE=true [2021-11-16 20:15:13,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-16 20:15:13,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-16 20:15:13,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-16 20:15:13,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-16 20:15:13,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-16 20:15:13,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-16 20:15:13,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-16 20:15:13,332 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-16 20:15:13,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-16 20:15:13,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-16 20:15:13,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-16 20:15:13,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-16 20:15:13,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 20:15:13,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-16 20:15:13,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-16 20:15:13,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-16 20:15:13,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-16 20:15:13,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-16 20:15:13,334 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-16 20:15:13,334 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-16 20:15:13,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-16 20:15:13,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-16 20:15:13,334 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c506089032d4cdff4e7555a7f0fed6846d5bd185846ae9cd372b1dcc3fd0c8a [2021-11-16 20:15:13,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-16 20:15:13,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-16 20:15:13,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-16 20:15:13,547 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-16 20:15:13,548 INFO L275 PluginConnector]: CDTParser initialized [2021-11-16 20:15:13,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i [2021-11-16 20:15:13,588 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/483aa349b/0aa1a9a3abbc498695aea17813cf94a8/FLAG20d37dec0 [2021-11-16 20:15:14,064 INFO L306 CDTParser]: Found 1 translation units. [2021-11-16 20:15:14,064 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_push_back_harness.i [2021-11-16 20:15:14,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/483aa349b/0aa1a9a3abbc498695aea17813cf94a8/FLAG20d37dec0 [2021-11-16 20:15:14,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/483aa349b/0aa1a9a3abbc498695aea17813cf94a8 [2021-11-16 20:15:14,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-16 20:15:14,372 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-16 20:15:14,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-16 20:15:14,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-16 20:15:14,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-16 20:15:14,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:15:14" (1/1) ... [2021-11-16 20:15:14,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27e542a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:14, skipping insertion in model container [2021-11-16 20:15:14,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:15:14" (1/1) ... [2021-11-16 20:15:14,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-16 20:15:14,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-16 20:15:14,653 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_push_back_harness.i[4498,4511] [2021-11-16 20:15:14,670 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_push_back_harness.i[4558,4571] [2021-11-16 20:15:14,681 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-16 20:15:14,683 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-16 20:15:15,089 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-16 20:15:15,148 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,150 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,150 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,152 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,153 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,166 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,166 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,168 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,168 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,170 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,170 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,172 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,173 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,371 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-16 20:15:15,372 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-16 20:15:15,373 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-16 20:15:15,374 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-16 20:15:15,374 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-16 20:15:15,375 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-16 20:15:15,375 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-16 20:15:15,376 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-16 20:15:15,376 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-16 20:15:15,377 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-16 20:15:15,442 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,446 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,482 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 20:15:15,496 INFO L203 MainTranslator]: Completed pre-run [2021-11-16 20:15:15,503 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_push_back_harness.i[4498,4511] [2021-11-16 20:15:15,503 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_push_back_harness.i[4558,4571] [2021-11-16 20:15:15,504 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-16 20:15:15,505 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-16 20:15:15,524 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-16 20:15:15,536 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,536 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,536 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,537 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,537 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,540 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,541 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,541 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,542 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,542 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,542 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,543 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,543 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,560 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-16 20:15:15,560 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-16 20:15:15,561 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-16 20:15:15,561 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-16 20:15:15,562 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-16 20:15:15,562 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-16 20:15:15,562 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-16 20:15:15,562 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-16 20:15:15,563 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-16 20:15:15,563 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-16 20:15:15,592 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,598 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:15:15,612 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 20:15:15,766 INFO L208 MainTranslator]: Completed translation [2021-11-16 20:15:15,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:15 WrapperNode [2021-11-16 20:15:15,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-16 20:15:15,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-16 20:15:15,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-16 20:15:15,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-16 20:15:15,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:15" (1/1) ... [2021-11-16 20:15:15,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:15" (1/1) ... [2021-11-16 20:15:15,891 INFO L137 Inliner]: procedures = 693, calls = 1683, calls flagged for inlining = 53, calls inlined = 14, statements flattened = 892 [2021-11-16 20:15:15,892 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-16 20:15:15,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-16 20:15:15,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-16 20:15:15,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-16 20:15:15,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:15" (1/1) ... [2021-11-16 20:15:15,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:15" (1/1) ... [2021-11-16 20:15:15,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:15" (1/1) ... [2021-11-16 20:15:15,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:15" (1/1) ... [2021-11-16 20:15:15,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:15" (1/1) ... [2021-11-16 20:15:15,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:15" (1/1) ... [2021-11-16 20:15:15,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:15" (1/1) ... [2021-11-16 20:15:15,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-16 20:15:15,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-16 20:15:15,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-16 20:15:15,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-16 20:15:15,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:15" (1/1) ... [2021-11-16 20:15:15,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 20:15:15,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:15:15,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-16 20:15:16,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-16 20:15:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-16 20:15:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-16 20:15:16,028 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-16 20:15:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-16 20:15:16,028 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-16 20:15:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-16 20:15:16,028 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-16 20:15:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-16 20:15:16,028 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-16 20:15:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-16 20:15:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-16 20:15:16,029 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-16 20:15:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-16 20:15:16,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-16 20:15:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-16 20:15:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-16 20:15:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-16 20:15:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-16 20:15:16,030 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-16 20:15:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-16 20:15:16,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-16 20:15:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-16 20:15:16,031 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-16 20:15:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-16 20:15:16,031 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-16 20:15:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-16 20:15:16,031 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-16 20:15:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-16 20:15:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-16 20:15:16,032 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-16 20:15:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-16 20:15:16,032 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-16 20:15:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-16 20:15:16,032 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-16 20:15:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-16 20:15:16,032 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-16 20:15:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-16 20:15:16,033 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-16 20:15:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-11-16 20:15:16,033 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-11-16 20:15:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-16 20:15:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-16 20:15:16,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-16 20:15:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-16 20:15:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-16 20:15:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-16 20:15:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-16 20:15:16,034 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-16 20:15:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-16 20:15:16,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-16 20:15:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-16 20:15:16,034 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-16 20:15:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-16 20:15:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-16 20:15:16,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-16 20:15:16,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-16 20:15:16,319 INFO L236 CfgBuilder]: Building ICFG [2021-11-16 20:15:16,320 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-16 20:15:17,640 INFO L277 CfgBuilder]: Performing block encoding [2021-11-16 20:15:17,651 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-16 20:15:17,651 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-16 20:15:17,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:15:17 BoogieIcfgContainer [2021-11-16 20:15:17,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-16 20:15:17,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-16 20:15:17,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-16 20:15:17,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-16 20:15:17,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:15:14" (1/3) ... [2021-11-16 20:15:17,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e4db63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:15:17, skipping insertion in model container [2021-11-16 20:15:17,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:15:15" (2/3) ... [2021-11-16 20:15:17,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e4db63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:15:17, skipping insertion in model container [2021-11-16 20:15:17,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:15:17" (3/3) ... [2021-11-16 20:15:17,663 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_push_back_harness.i [2021-11-16 20:15:17,667 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-16 20:15:17,667 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-16 20:15:17,702 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-16 20:15:17,709 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-16 20:15:17,709 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-16 20:15:17,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 174 states have (on average 1.2241379310344827) internal successors, (213), 175 states have internal predecessors, (213), 101 states have call successors, (101), 21 states have call predecessors, (101), 21 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) [2021-11-16 20:15:17,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-16 20:15:17,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:15:17,745 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:15:17,745 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:15:17,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:15:17,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1091930304, now seen corresponding path program 1 times [2021-11-16 20:15:17,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:15:17,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075654403] [2021-11-16 20:15:17,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:15:17,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:15:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:18,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:15:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:18,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:15:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:18,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:15:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:18,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-16 20:15:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:18,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-16 20:15:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:18,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-16 20:15:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:18,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-16 20:15:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:18,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-16 20:15:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:18,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 20:15:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:18,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-16 20:15:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:18,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:15:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:18,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-16 20:15:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:18,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-16 20:15:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:18,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-16 20:15:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:18,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-16 20:15:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:18,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 20:15:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:18,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-16 20:15:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:18,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-16 20:15:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:18,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-16 20:15:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:18,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-16 20:15:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:18,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-16 20:15:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:18,398 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-11-16 20:15:18,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:15:18,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075654403] [2021-11-16 20:15:18,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075654403] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:15:18,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:15:18,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-16 20:15:18,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524580021] [2021-11-16 20:15:18,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:15:18,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-16 20:15:18,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:15:18,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-16 20:15:18,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-16 20:15:18,434 INFO L87 Difference]: Start difference. First operand has 298 states, 174 states have (on average 1.2241379310344827) internal successors, (213), 175 states have internal predecessors, (213), 101 states have call successors, (101), 21 states have call predecessors, (101), 21 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-16 20:15:19,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:15:19,412 INFO L93 Difference]: Finished difference Result 615 states and 939 transitions. [2021-11-16 20:15:19,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 20:15:19,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 130 [2021-11-16 20:15:19,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:15:19,428 INFO L225 Difference]: With dead ends: 615 [2021-11-16 20:15:19,428 INFO L226 Difference]: Without dead ends: 319 [2021-11-16 20:15:19,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-16 20:15:19,436 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 205 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-16 20:15:19,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 523 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-16 20:15:19,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-11-16 20:15:19,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 293. [2021-11-16 20:15:19,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 170 states have (on average 1.2176470588235293) internal successors, (207), 171 states have internal predecessors, (207), 101 states have call successors, (101), 21 states have call predecessors, (101), 21 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2021-11-16 20:15:19,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 408 transitions. [2021-11-16 20:15:19,512 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 408 transitions. Word has length 130 [2021-11-16 20:15:19,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:15:19,513 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 408 transitions. [2021-11-16 20:15:19,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-16 20:15:19,514 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 408 transitions. [2021-11-16 20:15:19,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-16 20:15:19,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:15:19,524 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:15:19,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-16 20:15:19,525 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:15:19,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:15:19,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1112170678, now seen corresponding path program 1 times [2021-11-16 20:15:19,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:15:19,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706603169] [2021-11-16 20:15:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:15:19,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:15:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:19,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:15:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:19,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:15:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:19,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:15:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:19,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-16 20:15:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:19,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-16 20:15:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:19,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-16 20:15:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:19,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-16 20:15:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:19,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-16 20:15:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:19,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 20:15:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:19,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-16 20:15:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:19,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:15:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:19,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-16 20:15:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:19,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-16 20:15:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:19,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-16 20:15:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:19,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-16 20:15:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:19,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 20:15:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:19,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-16 20:15:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:19,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-16 20:15:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:19,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-16 20:15:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:19,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-16 20:15:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:19,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-16 20:15:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:19,877 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-11-16 20:15:19,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:15:19,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706603169] [2021-11-16 20:15:19,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706603169] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:15:19,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358532582] [2021-11-16 20:15:19,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:15:19,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:15:19,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:15:19,879 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:15:19,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-16 20:15:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:20,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 2219 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-16 20:15:20,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:15:20,431 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-11-16 20:15:20,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:15:20,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358532582] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:15:20,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:15:20,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-11-16 20:15:20,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800498696] [2021-11-16 20:15:20,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:15:20,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-16 20:15:20,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:15:20,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-16 20:15:20,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-16 20:15:20,434 INFO L87 Difference]: Start difference. First operand 293 states and 408 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-16 20:15:20,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:15:20,912 INFO L93 Difference]: Finished difference Result 562 states and 803 transitions. [2021-11-16 20:15:20,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-16 20:15:20,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 130 [2021-11-16 20:15:20,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:15:20,914 INFO L225 Difference]: With dead ends: 562 [2021-11-16 20:15:20,914 INFO L226 Difference]: Without dead ends: 295 [2021-11-16 20:15:20,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-16 20:15:20,915 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 429 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-16 20:15:20,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 1120 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-16 20:15:20,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-16 20:15:20,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2021-11-16 20:15:20,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 171 states have (on average 1.2163742690058479) internal successors, (208), 173 states have internal predecessors, (208), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (119), 100 states have call predecessors, (119), 100 states have call successors, (119) [2021-11-16 20:15:20,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 428 transitions. [2021-11-16 20:15:20,948 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 428 transitions. Word has length 130 [2021-11-16 20:15:20,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:15:20,950 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 428 transitions. [2021-11-16 20:15:20,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-16 20:15:20,950 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 428 transitions. [2021-11-16 20:15:20,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-16 20:15:20,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:15:20,952 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:15:20,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-16 20:15:21,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:15:21,171 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:15:21,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:15:21,172 INFO L85 PathProgramCache]: Analyzing trace with hash -130840866, now seen corresponding path program 1 times [2021-11-16 20:15:21,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:15:21,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267615129] [2021-11-16 20:15:21,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:15:21,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:15:21,210 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:15:21,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807636114] [2021-11-16 20:15:21,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:15:21,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:15:21,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:15:21,212 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:15:21,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-16 20:15:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:21,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 2451 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-16 20:15:21,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:15:21,853 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-11-16 20:15:21,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:15:21,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:15:21,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267615129] [2021-11-16 20:15:21,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:15:21,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807636114] [2021-11-16 20:15:21,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807636114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:15:21,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:15:21,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 20:15:21,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576992871] [2021-11-16 20:15:21,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:15:21,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 20:15:21,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:15:21,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 20:15:21,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 20:15:21,857 INFO L87 Difference]: Start difference. First operand 295 states and 428 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-16 20:15:21,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:15:21,887 INFO L93 Difference]: Finished difference Result 569 states and 851 transitions. [2021-11-16 20:15:21,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 20:15:21,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 160 [2021-11-16 20:15:21,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:15:21,890 INFO L225 Difference]: With dead ends: 569 [2021-11-16 20:15:21,890 INFO L226 Difference]: Without dead ends: 300 [2021-11-16 20:15:21,891 INFO L932 BasicCegarLoop]: 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 [2021-11-16 20:15:21,892 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 10 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1211 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 [2021-11-16 20:15:21,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1211 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-16 20:15:21,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-11-16 20:15:21,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 297. [2021-11-16 20:15:21,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 173 states have (on average 1.2138728323699421) internal successors, (210), 175 states have internal predecessors, (210), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (119), 100 states have call predecessors, (119), 100 states have call successors, (119) [2021-11-16 20:15:21,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 430 transitions. [2021-11-16 20:15:21,909 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 430 transitions. Word has length 160 [2021-11-16 20:15:21,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:15:21,909 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 430 transitions. [2021-11-16 20:15:21,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-16 20:15:21,910 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 430 transitions. [2021-11-16 20:15:21,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-16 20:15:21,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:15:21,911 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:15:21,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-16 20:15:22,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-16 20:15:22,133 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:15:22,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:15:22,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1971838050, now seen corresponding path program 1 times [2021-11-16 20:15:22,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:15:22,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983572536] [2021-11-16 20:15:22,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:15:22,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:15:22,165 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:15:22,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [97890656] [2021-11-16 20:15:22,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:15:22,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:15:22,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:15:22,167 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:15:22,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-16 20:15:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:22,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 2461 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-16 20:15:22,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:15:22,929 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-11-16 20:15:22,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:15:22,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:15:22,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983572536] [2021-11-16 20:15:22,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:15:22,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97890656] [2021-11-16 20:15:22,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97890656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:15:22,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:15:22,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-16 20:15:22,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914192856] [2021-11-16 20:15:22,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:15:22,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-16 20:15:22,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:15:22,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-16 20:15:22,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-16 20:15:22,932 INFO L87 Difference]: Start difference. First operand 297 states and 430 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-16 20:15:23,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:15:23,353 INFO L93 Difference]: Finished difference Result 548 states and 792 transitions. [2021-11-16 20:15:23,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-16 20:15:23,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 160 [2021-11-16 20:15:23,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:15:23,355 INFO L225 Difference]: With dead ends: 548 [2021-11-16 20:15:23,355 INFO L226 Difference]: Without dead ends: 297 [2021-11-16 20:15:23,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-16 20:15:23,357 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 508 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-16 20:15:23,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 1344 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-16 20:15:23,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-16 20:15:23,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2021-11-16 20:15:23,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 173 states have (on average 1.2138728323699421) internal successors, (210), 175 states have internal predecessors, (210), 101 states have call successors, (101), 21 states have call predecessors, (101), 22 states have return successors, (116), 100 states have call predecessors, (116), 100 states have call successors, (116) [2021-11-16 20:15:23,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 427 transitions. [2021-11-16 20:15:23,369 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 427 transitions. Word has length 160 [2021-11-16 20:15:23,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:15:23,369 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 427 transitions. [2021-11-16 20:15:23,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-16 20:15:23,370 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 427 transitions. [2021-11-16 20:15:23,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-16 20:15:23,371 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:15:23,371 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-16 20:15:23,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-16 20:15:23,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:15:23,593 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:15:23,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:15:23,593 INFO L85 PathProgramCache]: Analyzing trace with hash -228114873, now seen corresponding path program 2 times [2021-11-16 20:15:23,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:15:23,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797910418] [2021-11-16 20:15:23,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:15:23,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:15:23,622 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:15:23,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [655383664] [2021-11-16 20:15:23,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-16 20:15:23,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:15:23,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:15:23,623 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:15:23,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-16 20:15:25,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-16 20:15:25,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 20:15:25,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 2582 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-16 20:15:25,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:15:25,921 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2021-11-16 20:15:25,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:15:25,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:15:25,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797910418] [2021-11-16 20:15:25,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:15:25,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655383664] [2021-11-16 20:15:25,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655383664] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:15:25,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:15:25,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-16 20:15:25,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516603683] [2021-11-16 20:15:25,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:15:25,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-16 20:15:25,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:15:25,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-16 20:15:25,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-16 20:15:25,924 INFO L87 Difference]: Start difference. First operand 297 states and 427 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-16 20:15:26,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:15:26,485 INFO L93 Difference]: Finished difference Result 554 states and 797 transitions. [2021-11-16 20:15:26,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-16 20:15:26,486 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 175 [2021-11-16 20:15:26,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:15:26,488 INFO L225 Difference]: With dead ends: 554 [2021-11-16 20:15:26,492 INFO L226 Difference]: Without dead ends: 309 [2021-11-16 20:15:26,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-16 20:15:26,499 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 524 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-16 20:15:26,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 1949 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-16 20:15:26,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-16 20:15:26,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2021-11-16 20:15:26,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 179 states have (on average 1.2122905027932962) internal successors, (217), 181 states have internal predecessors, (217), 106 states have call successors, (106), 22 states have call predecessors, (106), 23 states have return successors, (121), 105 states have call predecessors, (121), 105 states have call successors, (121) [2021-11-16 20:15:26,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 444 transitions. [2021-11-16 20:15:26,531 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 444 transitions. Word has length 175 [2021-11-16 20:15:26,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:15:26,531 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 444 transitions. [2021-11-16 20:15:26,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-16 20:15:26,532 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 444 transitions. [2021-11-16 20:15:26,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-16 20:15:26,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:15:26,542 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:15:26,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-16 20:15:26,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:15:26,755 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:15:26,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:15:26,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2146106871, now seen corresponding path program 1 times [2021-11-16 20:15:26,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:15:26,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391570636] [2021-11-16 20:15:26,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:15:26,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:15:26,786 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:15:26,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825579337] [2021-11-16 20:15:26,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:15:26,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:15:26,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:15:26,788 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:15:26,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-16 20:15:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:27,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 2824 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-16 20:15:27,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:15:27,523 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-11-16 20:15:27,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:15:27,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:15:27,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391570636] [2021-11-16 20:15:27,524 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:15:27,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825579337] [2021-11-16 20:15:27,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825579337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:15:27,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:15:27,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-16 20:15:27,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82420925] [2021-11-16 20:15:27,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:15:27,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-16 20:15:27,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:15:27,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-16 20:15:27,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-16 20:15:27,526 INFO L87 Difference]: Start difference. First operand 309 states and 444 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-16 20:15:27,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:15:27,766 INFO L93 Difference]: Finished difference Result 698 states and 1038 transitions. [2021-11-16 20:15:27,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-16 20:15:27,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 205 [2021-11-16 20:15:27,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:15:27,770 INFO L225 Difference]: With dead ends: 698 [2021-11-16 20:15:27,770 INFO L226 Difference]: Without dead ends: 438 [2021-11-16 20:15:27,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-16 20:15:27,771 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 173 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-16 20:15:27,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 2498 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-16 20:15:27,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-11-16 20:15:27,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 315. [2021-11-16 20:15:27,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 182 states have (on average 1.2087912087912087) internal successors, (220), 184 states have internal predecessors, (220), 109 states have call successors, (109), 22 states have call predecessors, (109), 23 states have return successors, (124), 108 states have call predecessors, (124), 108 states have call successors, (124) [2021-11-16 20:15:27,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 453 transitions. [2021-11-16 20:15:27,808 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 453 transitions. Word has length 205 [2021-11-16 20:15:27,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:15:27,809 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 453 transitions. [2021-11-16 20:15:27,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-16 20:15:27,809 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 453 transitions. [2021-11-16 20:15:27,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-16 20:15:27,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:15:27,811 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:15:27,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-16 20:15:28,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:15:28,012 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:15:28,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:15:28,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1414139445, now seen corresponding path program 1 times [2021-11-16 20:15:28,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:15:28,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988857326] [2021-11-16 20:15:28,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:15:28,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:15:28,050 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:15:28,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2007795068] [2021-11-16 20:15:28,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:15:28,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:15:28,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:15:28,052 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:15:28,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-16 20:15:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:28,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 2821 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-16 20:15:28,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:15:28,758 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-11-16 20:15:28,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:15:28,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:15:28,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988857326] [2021-11-16 20:15:28,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:15:28,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007795068] [2021-11-16 20:15:28,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007795068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:15:28,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:15:28,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-16 20:15:28,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938141866] [2021-11-16 20:15:28,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:15:28,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-16 20:15:28,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:15:28,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-16 20:15:28,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-16 20:15:28,762 INFO L87 Difference]: Start difference. First operand 315 states and 453 transitions. Second operand has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-16 20:15:28,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:15:28,896 INFO L93 Difference]: Finished difference Result 575 states and 825 transitions. [2021-11-16 20:15:28,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 20:15:28,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 3 states have call successors, (25) Word has length 205 [2021-11-16 20:15:28,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:15:28,898 INFO L225 Difference]: With dead ends: 575 [2021-11-16 20:15:28,898 INFO L226 Difference]: Without dead ends: 309 [2021-11-16 20:15:28,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-16 20:15:28,900 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 2 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 20:15:28,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1469 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 20:15:28,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-16 20:15:28,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2021-11-16 20:15:28,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 179 states have (on average 1.2067039106145252) internal successors, (216), 181 states have internal predecessors, (216), 106 states have call successors, (106), 22 states have call predecessors, (106), 23 states have return successors, (121), 105 states have call predecessors, (121), 105 states have call successors, (121) [2021-11-16 20:15:28,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 443 transitions. [2021-11-16 20:15:28,926 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 443 transitions. Word has length 205 [2021-11-16 20:15:28,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:15:28,926 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 443 transitions. [2021-11-16 20:15:28,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-16 20:15:28,926 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 443 transitions. [2021-11-16 20:15:28,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-16 20:15:28,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:15:28,928 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:15:28,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-16 20:15:29,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:15:29,149 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:15:29,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:15:29,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1115065973, now seen corresponding path program 1 times [2021-11-16 20:15:29,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:15:29,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619513297] [2021-11-16 20:15:29,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:15:29,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:15:29,186 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:15:29,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829561437] [2021-11-16 20:15:29,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:15:29,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:15:29,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:15:29,204 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:15:29,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-16 20:15:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:29,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 2827 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-16 20:15:29,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:15:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-11-16 20:15:29,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:15:29,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:15:29,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619513297] [2021-11-16 20:15:29,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:15:29,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829561437] [2021-11-16 20:15:29,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829561437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:15:29,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:15:29,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-16 20:15:29,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495245574] [2021-11-16 20:15:29,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:15:29,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-16 20:15:29,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:15:29,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-16 20:15:29,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-16 20:15:29,998 INFO L87 Difference]: Start difference. First operand 309 states and 443 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-16 20:15:30,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:15:30,176 INFO L93 Difference]: Finished difference Result 711 states and 1055 transitions. [2021-11-16 20:15:30,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-16 20:15:30,177 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) Word has length 205 [2021-11-16 20:15:30,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:15:30,179 INFO L225 Difference]: With dead ends: 711 [2021-11-16 20:15:30,179 INFO L226 Difference]: Without dead ends: 451 [2021-11-16 20:15:30,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-16 20:15:30,181 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 177 mSDsluCounter, 2997 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 3533 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 20:15:30,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 3533 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 20:15:30,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-11-16 20:15:30,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 328. [2021-11-16 20:15:30,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 191 states have (on average 1.198952879581152) internal successors, (229), 193 states have internal predecessors, (229), 112 states have call successors, (112), 22 states have call predecessors, (112), 24 states have return successors, (129), 112 states have call predecessors, (129), 111 states have call successors, (129) [2021-11-16 20:15:30,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 470 transitions. [2021-11-16 20:15:30,197 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 470 transitions. Word has length 205 [2021-11-16 20:15:30,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:15:30,197 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 470 transitions. [2021-11-16 20:15:30,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-16 20:15:30,197 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 470 transitions. [2021-11-16 20:15:30,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-16 20:15:30,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:15:30,199 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:15:30,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-16 20:15:30,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:15:30,419 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:15:30,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:15:30,420 INFO L85 PathProgramCache]: Analyzing trace with hash 383098547, now seen corresponding path program 1 times [2021-11-16 20:15:30,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:15:30,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337178178] [2021-11-16 20:15:30,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:15:30,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:15:30,456 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:15:30,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43940632] [2021-11-16 20:15:30,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:15:30,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:15:30,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:15:30,475 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:15:30,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-16 20:15:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:30,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 2824 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-16 20:15:30,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:15:31,260 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-11-16 20:15:31,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:15:31,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:15:31,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337178178] [2021-11-16 20:15:31,261 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:15:31,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43940632] [2021-11-16 20:15:31,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43940632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:15:31,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:15:31,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-16 20:15:31,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453436738] [2021-11-16 20:15:31,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:15:31,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-16 20:15:31,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:15:31,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-16 20:15:31,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-16 20:15:31,263 INFO L87 Difference]: Start difference. First operand 328 states and 470 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-16 20:15:31,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:15:31,466 INFO L93 Difference]: Finished difference Result 591 states and 845 transitions. [2021-11-16 20:15:31,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-16 20:15:31,467 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 205 [2021-11-16 20:15:31,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:15:31,469 INFO L225 Difference]: With dead ends: 591 [2021-11-16 20:15:31,469 INFO L226 Difference]: Without dead ends: 312 [2021-11-16 20:15:31,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-16 20:15:31,470 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 170 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 20:15:31,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 1658 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 20:15:31,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-16 20:15:31,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2021-11-16 20:15:31,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 181 states have (on average 1.1988950276243093) internal successors, (217), 184 states have internal predecessors, (217), 106 states have call successors, (106), 22 states have call predecessors, (106), 24 states have return successors, (122), 105 states have call predecessors, (122), 105 states have call successors, (122) [2021-11-16 20:15:31,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 445 transitions. [2021-11-16 20:15:31,486 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 445 transitions. Word has length 205 [2021-11-16 20:15:31,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:15:31,486 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 445 transitions. [2021-11-16 20:15:31,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-16 20:15:31,486 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 445 transitions. [2021-11-16 20:15:31,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-16 20:15:31,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:15:31,488 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:15:31,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-16 20:15:31,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-16 20:15:31,703 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:15:31,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:15:31,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1036256056, now seen corresponding path program 1 times [2021-11-16 20:15:31,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:15:31,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199973689] [2021-11-16 20:15:31,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:15:31,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:15:31,736 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:15:31,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [135133323] [2021-11-16 20:15:31,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:15:31,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:15:31,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:15:31,752 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) [2021-11-16 20:15:31,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-16 20:15:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:32,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 2858 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-16 20:15:32,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:15:32,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-16 20:15:32,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-16 20:15:32,748 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 218 proven. 4 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-11-16 20:15:32,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:15:33,442 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-16 20:15:33,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 35 [2021-11-16 20:15:33,446 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-11-16 20:15:33,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-11-16 20:15:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 36 proven. 60 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2021-11-16 20:15:33,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:15:33,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199973689] [2021-11-16 20:15:33,524 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:15:33,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135133323] [2021-11-16 20:15:33,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135133323] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-16 20:15:33,524 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-16 20:15:33,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 21 [2021-11-16 20:15:33,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747801891] [2021-11-16 20:15:33,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-16 20:15:33,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-16 20:15:33,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:15:33,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-16 20:15:33,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2021-11-16 20:15:33,526 INFO L87 Difference]: Start difference. First operand 312 states and 445 transitions. Second operand has 21 states, 18 states have (on average 6.222222222222222) internal successors, (112), 17 states have internal predecessors, (112), 9 states have call successors, (51), 4 states have call predecessors, (51), 6 states have return successors, (49), 7 states have call predecessors, (49), 8 states have call successors, (49) [2021-11-16 20:15:35,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:15:35,288 INFO L93 Difference]: Finished difference Result 615 states and 898 transitions. [2021-11-16 20:15:35,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-16 20:15:35,288 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 6.222222222222222) internal successors, (112), 17 states have internal predecessors, (112), 9 states have call successors, (51), 4 states have call predecessors, (51), 6 states have return successors, (49), 7 states have call predecessors, (49), 8 states have call successors, (49) Word has length 216 [2021-11-16 20:15:35,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:15:35,290 INFO L225 Difference]: With dead ends: 615 [2021-11-16 20:15:35,290 INFO L226 Difference]: Without dead ends: 325 [2021-11-16 20:15:35,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 413 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=806, Unknown=0, NotChecked=0, Total=930 [2021-11-16 20:15:35,292 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 141 mSDsluCounter, 5224 mSDsCounter, 0 mSdLazyCounter, 1810 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 5571 SdHoareTripleChecker+Invalid, 1944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-16 20:15:35,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 5571 Invalid, 1944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1810 Invalid, 0 Unknown, 116 Unchecked, 1.5s Time] [2021-11-16 20:15:35,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-16 20:15:35,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 315. [2021-11-16 20:15:35,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 183 states have (on average 1.1967213114754098) internal successors, (219), 187 states have internal predecessors, (219), 106 states have call successors, (106), 22 states have call predecessors, (106), 25 states have return successors, (145), 105 states have call predecessors, (145), 105 states have call successors, (145) [2021-11-16 20:15:35,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 470 transitions. [2021-11-16 20:15:35,321 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 470 transitions. Word has length 216 [2021-11-16 20:15:35,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:15:35,322 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 470 transitions. [2021-11-16 20:15:35,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 6.222222222222222) internal successors, (112), 17 states have internal predecessors, (112), 9 states have call successors, (51), 4 states have call predecessors, (51), 6 states have return successors, (49), 7 states have call predecessors, (49), 8 states have call successors, (49) [2021-11-16 20:15:35,322 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 470 transitions. [2021-11-16 20:15:35,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-16 20:15:35,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:15:35,324 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:15:35,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-16 20:15:35,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-16 20:15:35,545 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:15:35,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:15:35,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1285474944, now seen corresponding path program 1 times [2021-11-16 20:15:35,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:15:35,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170588249] [2021-11-16 20:15:35,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:15:35,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:15:35,592 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:15:35,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788738104] [2021-11-16 20:15:35,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:15:35,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:15:35,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:15:35,594 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) [2021-11-16 20:15:35,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-16 20:15:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:36,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 2858 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-16 20:15:36,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:15:36,413 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-11-16 20:15:36,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:15:36,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:15:36,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170588249] [2021-11-16 20:15:36,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:15:36,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788738104] [2021-11-16 20:15:36,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788738104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:15:36,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:15:36,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-16 20:15:36,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935047033] [2021-11-16 20:15:36,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:15:36,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-16 20:15:36,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:15:36,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-16 20:15:36,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-16 20:15:36,415 INFO L87 Difference]: Start difference. First operand 315 states and 470 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-16 20:15:36,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:15:36,946 INFO L93 Difference]: Finished difference Result 609 states and 959 transitions. [2021-11-16 20:15:36,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-16 20:15:36,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 218 [2021-11-16 20:15:36,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:15:36,948 INFO L225 Difference]: With dead ends: 609 [2021-11-16 20:15:36,948 INFO L226 Difference]: Without dead ends: 320 [2021-11-16 20:15:36,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-16 20:15:36,950 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 7 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-16 20:15:36,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1569 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-16 20:15:36,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-11-16 20:15:36,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 316. [2021-11-16 20:15:36,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 184 states have (on average 1.1956521739130435) internal successors, (220), 188 states have internal predecessors, (220), 106 states have call successors, (106), 22 states have call predecessors, (106), 25 states have return successors, (145), 105 states have call predecessors, (145), 105 states have call successors, (145) [2021-11-16 20:15:36,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 471 transitions. [2021-11-16 20:15:36,966 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 471 transitions. Word has length 218 [2021-11-16 20:15:36,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:15:36,966 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 471 transitions. [2021-11-16 20:15:36,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-16 20:15:36,967 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 471 transitions. [2021-11-16 20:15:36,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-16 20:15:36,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:15:36,968 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:15:36,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-16 20:15:37,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-16 20:15:37,186 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:15:37,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:15:37,187 INFO L85 PathProgramCache]: Analyzing trace with hash -82985666, now seen corresponding path program 1 times [2021-11-16 20:15:37,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:15:37,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001406703] [2021-11-16 20:15:37,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:15:37,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:15:37,230 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:15:37,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [750034979] [2021-11-16 20:15:37,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:15:37,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:15:37,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:15:37,233 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) [2021-11-16 20:15:37,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-16 20:15:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:37,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 2863 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-16 20:15:37,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:15:38,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2021-11-16 20:15:38,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 30 [2021-11-16 20:15:38,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-11-16 20:15:39,021 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 265 proven. 6 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-11-16 20:15:39,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:15:39,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-16 20:15:39,801 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-16 20:15:39,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-16 20:15:40,012 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-16 20:15:40,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2021-11-16 20:15:40,126 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 39 proven. 60 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2021-11-16 20:15:40,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:15:40,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001406703] [2021-11-16 20:15:40,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:15:40,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750034979] [2021-11-16 20:15:40,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750034979] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-16 20:15:40,126 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-16 20:15:40,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18] total 31 [2021-11-16 20:15:40,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535560896] [2021-11-16 20:15:40,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-16 20:15:40,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-16 20:15:40,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:15:40,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-16 20:15:40,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=809, Unknown=0, NotChecked=0, Total=930 [2021-11-16 20:15:40,128 INFO L87 Difference]: Start difference. First operand 316 states and 471 transitions. Second operand has 31 states, 27 states have (on average 5.592592592592593) internal successors, (151), 27 states have internal predecessors, (151), 16 states have call successors, (56), 6 states have call predecessors, (56), 10 states have return successors, (53), 13 states have call predecessors, (53), 15 states have call successors, (53) [2021-11-16 20:15:43,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:15:43,242 INFO L93 Difference]: Finished difference Result 781 states and 1231 transitions. [2021-11-16 20:15:43,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-16 20:15:43,243 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 5.592592592592593) internal successors, (151), 27 states have internal predecessors, (151), 16 states have call successors, (56), 6 states have call predecessors, (56), 10 states have return successors, (53), 13 states have call predecessors, (53), 15 states have call successors, (53) Word has length 218 [2021-11-16 20:15:43,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:15:43,245 INFO L225 Difference]: With dead ends: 781 [2021-11-16 20:15:43,245 INFO L226 Difference]: Without dead ends: 500 [2021-11-16 20:15:43,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 401 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=217, Invalid=1423, Unknown=0, NotChecked=0, Total=1640 [2021-11-16 20:15:43,247 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 527 mSDsluCounter, 5058 mSDsCounter, 0 mSdLazyCounter, 3188 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 5471 SdHoareTripleChecker+Invalid, 4640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 3188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1286 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-16 20:15:43,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 5471 Invalid, 4640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 3188 Invalid, 0 Unknown, 1286 Unchecked, 2.8s Time] [2021-11-16 20:15:43,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-11-16 20:15:43,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 365. [2021-11-16 20:15:43,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 216 states have (on average 1.1666666666666667) internal successors, (252), 220 states have internal predecessors, (252), 114 states have call successors, (114), 30 states have call predecessors, (114), 34 states have return successors, (177), 114 states have call predecessors, (177), 113 states have call successors, (177) [2021-11-16 20:15:43,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 543 transitions. [2021-11-16 20:15:43,266 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 543 transitions. Word has length 218 [2021-11-16 20:15:43,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:15:43,266 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 543 transitions. [2021-11-16 20:15:43,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 5.592592592592593) internal successors, (151), 27 states have internal predecessors, (151), 16 states have call successors, (56), 6 states have call predecessors, (56), 10 states have return successors, (53), 13 states have call predecessors, (53), 15 states have call successors, (53) [2021-11-16 20:15:43,267 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 543 transitions. [2021-11-16 20:15:43,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-16 20:15:43,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:15:43,268 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:15:43,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-16 20:15:43,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-16 20:15:43,483 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:15:43,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:15:43,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1265933822, now seen corresponding path program 1 times [2021-11-16 20:15:43,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:15:43,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128248485] [2021-11-16 20:15:43,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:15:43,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:15:43,510 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:15:43,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318952039] [2021-11-16 20:15:43,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:15:43,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:15:43,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:15:43,523 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) [2021-11-16 20:15:43,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-16 20:15:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:15:43,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 2863 conjuncts, 68 conjunts are in the unsatisfiable core [2021-11-16 20:15:43,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:15:43,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-16 20:15:47,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:15:47,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-16 20:15:47,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:15:47,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-16 20:15:50,700 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|)))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.base| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|))) |c_#memory_$Pointer$.base|))) is different from true [2021-11-16 20:15:51,827 INFO L354 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2021-11-16 20:15:51,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 1 [2021-11-16 20:15:52,315 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 156 proven. 4 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-16 20:15:52,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:15:53,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:15:53,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128248485] [2021-11-16 20:15:53,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:15:53,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318952039] [2021-11-16 20:15:53,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318952039] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:15:53,331 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:15:53,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-11-16 20:15:53,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806740272] [2021-11-16 20:15:53,331 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-16 20:15:53,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-16 20:15:53,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:15:53,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-16 20:15:53,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=4, NotChecked=28, Total=272 [2021-11-16 20:15:53,332 INFO L87 Difference]: Start difference. First operand 365 states and 543 transitions. Second operand has 16 states, 15 states have (on average 5.4) internal successors, (81), 14 states have internal predecessors, (81), 5 states have call successors, (29), 5 states have call predecessors, (29), 6 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-16 20:16:00,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:16:00,988 INFO L93 Difference]: Finished difference Result 693 states and 1048 transitions. [2021-11-16 20:16:00,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-16 20:16:00,989 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.4) internal successors, (81), 14 states have internal predecessors, (81), 5 states have call successors, (29), 5 states have call predecessors, (29), 6 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 218 [2021-11-16 20:16:00,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:16:00,992 INFO L225 Difference]: With dead ends: 693 [2021-11-16 20:16:00,992 INFO L226 Difference]: Without dead ends: 395 [2021-11-16 20:16:00,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 368 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=51, Invalid=253, Unknown=6, NotChecked=32, Total=342 [2021-11-16 20:16:00,994 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 104 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 3824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2451 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-16 20:16:00,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 1733 Invalid, 3824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1251 Invalid, 0 Unknown, 2451 Unchecked, 3.4s Time] [2021-11-16 20:16:00,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-11-16 20:16:01,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 372. [2021-11-16 20:16:01,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 220 states have (on average 1.1636363636363636) internal successors, (256), 225 states have internal predecessors, (256), 115 states have call successors, (115), 31 states have call predecessors, (115), 36 states have return successors, (179), 115 states have call predecessors, (179), 114 states have call successors, (179) [2021-11-16 20:16:01,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 550 transitions. [2021-11-16 20:16:01,011 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 550 transitions. Word has length 218 [2021-11-16 20:16:01,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:16:01,012 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 550 transitions. [2021-11-16 20:16:01,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.4) internal successors, (81), 14 states have internal predecessors, (81), 5 states have call successors, (29), 5 states have call predecessors, (29), 6 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-16 20:16:01,012 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 550 transitions. [2021-11-16 20:16:01,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-16 20:16:01,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:16:01,013 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:16:01,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-16 20:16:01,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-16 20:16:01,231 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:16:01,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:16:01,231 INFO L85 PathProgramCache]: Analyzing trace with hash -989000721, now seen corresponding path program 1 times [2021-11-16 20:16:01,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:16:01,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655962617] [2021-11-16 20:16:01,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:16:01,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:16:01,272 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:16:01,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808143818] [2021-11-16 20:16:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:16:01,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:16:01,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:16:01,300 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) [2021-11-16 20:16:01,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-16 20:16:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:16:01,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 2886 conjuncts, 88 conjunts are in the unsatisfiable core [2021-11-16 20:16:01,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:16:01,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-16 20:16:02,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-16 20:16:02,253 INFO L388 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 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-16 20:16:02,502 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-16 20:16:02,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-16 20:16:02,662 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-16 20:16:02,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-16 20:16:05,084 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|))))) is different from true [2021-11-16 20:16:11,431 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-16 20:16:11,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2021-11-16 20:16:11,476 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-16 20:16:11,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 31 [2021-11-16 20:16:11,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-16 20:16:57,448 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.base|)) is different from true [2021-11-16 20:18:49,916 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 274 proven. 53 refuted. 0 times theorem prover too weak. 132 trivial. 3 not checked. [2021-11-16 20:18:49,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:18:52,567 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_115| Int) (v_DerPreprocessor_3 Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_115| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_115|) 0 v_DerPreprocessor_3)) |c_ULTIMATE.start_aws_array_list_push_back_harness_~#list~0#1.base|) (+ 32 |c_ULTIMATE.start_aws_array_list_push_back_harness_~#list~0#1.offset|)) 0))) is different from false [2021-11-16 20:18:52,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:18:52,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655962617] [2021-11-16 20:18:52,571 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:18:52,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808143818] [2021-11-16 20:18:52,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808143818] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:18:52,571 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:18:52,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2021-11-16 20:18:52,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964827004] [2021-11-16 20:18:52,571 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-16 20:18:52,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-16 20:18:52,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:18:52,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-16 20:18:52,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=902, Unknown=63, NotChecked=192, Total=1260 [2021-11-16 20:18:52,572 INFO L87 Difference]: Start difference. First operand 372 states and 550 transitions. Second operand has 35 states, 32 states have (on average 3.21875) internal successors, (103), 29 states have internal predecessors, (103), 13 states have call successors, (32), 10 states have call predecessors, (32), 12 states have return successors, (30), 13 states have call predecessors, (30), 13 states have call successors, (30) [2021-11-16 20:19:43,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:19:43,446 INFO L93 Difference]: Finished difference Result 733 states and 1130 transitions. [2021-11-16 20:19:43,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-16 20:19:43,446 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 3.21875) internal successors, (103), 29 states have internal predecessors, (103), 13 states have call successors, (32), 10 states have call predecessors, (32), 12 states have return successors, (30), 13 states have call predecessors, (30), 13 states have call successors, (30) Word has length 224 [2021-11-16 20:19:43,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:19:43,449 INFO L225 Difference]: With dead ends: 733 [2021-11-16 20:19:43,449 INFO L226 Difference]: Without dead ends: 446 [2021-11-16 20:19:43,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 290 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 212.3s TimeCoverageRelationStatistics Valid=227, Invalid=2060, Unknown=77, NotChecked=288, Total=2652 [2021-11-16 20:19:43,450 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 279 mSDsluCounter, 3934 mSDsCounter, 0 mSdLazyCounter, 2287 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 4323 SdHoareTripleChecker+Invalid, 8066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 2287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5388 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-16 20:19:43,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 4323 Invalid, 8066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 2287 Invalid, 0 Unknown, 5388 Unchecked, 6.5s Time] [2021-11-16 20:19:43,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-16 20:19:43,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 430. [2021-11-16 20:19:43,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 259 states have (on average 1.1544401544401544) internal successors, (299), 267 states have internal predecessors, (299), 124 states have call successors, (124), 37 states have call predecessors, (124), 46 states have return successors, (243), 125 states have call predecessors, (243), 123 states have call successors, (243) [2021-11-16 20:19:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 666 transitions. [2021-11-16 20:19:43,479 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 666 transitions. Word has length 224 [2021-11-16 20:19:43,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:19:43,480 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 666 transitions. [2021-11-16 20:19:43,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 3.21875) internal successors, (103), 29 states have internal predecessors, (103), 13 states have call successors, (32), 10 states have call predecessors, (32), 12 states have return successors, (30), 13 states have call predecessors, (30), 13 states have call successors, (30) [2021-11-16 20:19:43,480 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 666 transitions. [2021-11-16 20:19:43,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-16 20:19:43,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:19:43,481 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:19:43,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-16 20:19:43,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-16 20:19:43,697 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:19:43,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:19:43,698 INFO L85 PathProgramCache]: Analyzing trace with hash 256742611, now seen corresponding path program 1 times [2021-11-16 20:19:43,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:19:43,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556793169] [2021-11-16 20:19:43,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:19:43,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:19:43,730 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:19:43,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2065938390] [2021-11-16 20:19:43,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:19:43,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:19:43,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:19:43,756 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) [2021-11-16 20:19:43,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-16 20:19:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:19:44,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 2950 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-16 20:19:44,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:19:45,074 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-11-16 20:19:45,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:19:45,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:19:45,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556793169] [2021-11-16 20:19:45,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:19:45,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065938390] [2021-11-16 20:19:45,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065938390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:19:45,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:19:45,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-16 20:19:45,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793914081] [2021-11-16 20:19:45,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:19:45,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-16 20:19:45,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:19:45,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-16 20:19:45,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-16 20:19:45,076 INFO L87 Difference]: Start difference. First operand 430 states and 666 transitions. Second operand has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 9 states have internal predecessors, (97), 3 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-16 20:19:46,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:19:46,225 INFO L93 Difference]: Finished difference Result 740 states and 1230 transitions. [2021-11-16 20:19:46,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-16 20:19:46,226 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 9 states have internal predecessors, (97), 3 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) Word has length 248 [2021-11-16 20:19:46,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:19:46,228 INFO L225 Difference]: With dead ends: 740 [2021-11-16 20:19:46,228 INFO L226 Difference]: Without dead ends: 441 [2021-11-16 20:19:46,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-16 20:19:46,230 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 11 mSDsluCounter, 4025 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4436 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-16 20:19:46,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 4436 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-16 20:19:46,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-11-16 20:19:46,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2021-11-16 20:19:46,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 268 states have (on average 1.1492537313432836) internal successors, (308), 278 states have internal predecessors, (308), 124 states have call successors, (124), 37 states have call predecessors, (124), 48 states have return successors, (290), 125 states have call predecessors, (290), 123 states have call successors, (290) [2021-11-16 20:19:46,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 722 transitions. [2021-11-16 20:19:46,253 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 722 transitions. Word has length 248 [2021-11-16 20:19:46,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:19:46,254 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 722 transitions. [2021-11-16 20:19:46,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 9 states have internal predecessors, (97), 3 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-16 20:19:46,254 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 722 transitions. [2021-11-16 20:19:46,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-16 20:19:46,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:19:46,255 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:19:46,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-16 20:19:46,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:19:46,476 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:19:46,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:19:46,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1937505965, now seen corresponding path program 1 times [2021-11-16 20:19:46,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:19:46,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727851774] [2021-11-16 20:19:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:19:46,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:19:46,514 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:19:46,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [299675766] [2021-11-16 20:19:46,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:19:46,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:19:46,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:19:46,517 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) [2021-11-16 20:19:46,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-16 20:19:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:19:46,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 2891 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-16 20:19:46,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:19:47,658 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-11-16 20:19:47,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:19:47,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:19:47,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727851774] [2021-11-16 20:19:47,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:19:47,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299675766] [2021-11-16 20:19:47,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299675766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:19:47,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:19:47,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-16 20:19:47,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159288667] [2021-11-16 20:19:47,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:19:47,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-16 20:19:47,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:19:47,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-16 20:19:47,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-16 20:19:47,660 INFO L87 Difference]: Start difference. First operand 441 states and 722 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-16 20:19:48,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:19:48,957 INFO L93 Difference]: Finished difference Result 761 states and 1324 transitions. [2021-11-16 20:19:48,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 20:19:48,958 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 224 [2021-11-16 20:19:48,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:19:48,960 INFO L225 Difference]: With dead ends: 761 [2021-11-16 20:19:48,960 INFO L226 Difference]: Without dead ends: 437 [2021-11-16 20:19:48,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-16 20:19:48,962 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 13 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-16 20:19:48,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 1540 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-16 20:19:48,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-11-16 20:19:48,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2021-11-16 20:19:48,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 265 states have (on average 1.1433962264150943) internal successors, (303), 274 states have internal predecessors, (303), 124 states have call successors, (124), 37 states have call predecessors, (124), 47 states have return successors, (264), 125 states have call predecessors, (264), 123 states have call successors, (264) [2021-11-16 20:19:48,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 691 transitions. [2021-11-16 20:19:48,985 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 691 transitions. Word has length 224 [2021-11-16 20:19:48,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:19:48,985 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 691 transitions. [2021-11-16 20:19:48,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-16 20:19:48,986 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 691 transitions. [2021-11-16 20:19:48,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-16 20:19:48,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:19:48,987 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:19:49,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-16 20:19:49,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-16 20:19:49,201 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:19:49,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:19:49,202 INFO L85 PathProgramCache]: Analyzing trace with hash 92048094, now seen corresponding path program 1 times [2021-11-16 20:19:49,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:19:49,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39738720] [2021-11-16 20:19:49,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:19:49,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:19:49,228 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:19:49,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271678145] [2021-11-16 20:19:49,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:19:49,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:19:49,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:19:49,230 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) [2021-11-16 20:19:49,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-16 20:19:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:19:49,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 2899 conjuncts, 105 conjunts are in the unsatisfiable core [2021-11-16 20:19:49,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:19:49,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-16 20:19:50,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-16 20:19:50,301 INFO L388 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 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-16 20:19:50,576 INFO L388 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 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-16 20:19:50,849 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-16 20:19:50,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-16 20:19:51,027 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-16 20:19:51,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-16 20:19:53,535 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|))))) is different from true [2021-11-16 20:20:02,843 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-16 20:20:02,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2021-11-16 20:20:02,897 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-16 20:20:02,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 31 [2021-11-16 20:20:04,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-16 20:20:07,136 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.base|)) is different from true [2021-11-16 20:21:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 274 proven. 41 refuted. 0 times theorem prover too weak. 144 trivial. 3 not checked. [2021-11-16 20:21:47,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:22:03,162 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_139| Int) (v_DerPreprocessor_4 Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_139| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_139|) 0 v_DerPreprocessor_4)) |c_ULTIMATE.start_aws_array_list_push_back_harness_~#list~0#1.base|) (+ 32 |c_ULTIMATE.start_aws_array_list_push_back_harness_~#list~0#1.offset|)) 0))) is different from false [2021-11-16 20:22:03,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:22:03,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39738720] [2021-11-16 20:22:03,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:22:03,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271678145] [2021-11-16 20:22:03,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271678145] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:22:03,166 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:22:03,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2021-11-16 20:22:03,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248379311] [2021-11-16 20:22:03,166 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-16 20:22:03,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-16 20:22:03,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:22:03,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-16 20:22:03,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1106, Unknown=58, NotChecked=210, Total=1482 [2021-11-16 20:22:03,167 INFO L87 Difference]: Start difference. First operand 437 states and 691 transitions. Second operand has 35 states, 32 states have (on average 3.21875) internal successors, (103), 30 states have internal predecessors, (103), 13 states have call successors, (33), 9 states have call predecessors, (33), 11 states have return successors, (31), 12 states have call predecessors, (31), 13 states have call successors, (31) [2021-11-16 20:22:38,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:22:38,114 INFO L93 Difference]: Finished difference Result 804 states and 1297 transitions. [2021-11-16 20:22:38,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-16 20:22:38,115 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 3.21875) internal successors, (103), 30 states have internal predecessors, (103), 13 states have call successors, (33), 9 states have call predecessors, (33), 11 states have return successors, (31), 12 states have call predecessors, (31), 13 states have call successors, (31) Word has length 229 [2021-11-16 20:22:38,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:22:38,118 INFO L225 Difference]: With dead ends: 804 [2021-11-16 20:22:38,118 INFO L226 Difference]: Without dead ends: 495 [2021-11-16 20:22:38,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 289 SyntacticMatches, 13 SemanticMatches, 51 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 157.7s TimeCoverageRelationStatistics Valid=213, Invalid=2185, Unknown=64, NotChecked=294, Total=2756 [2021-11-16 20:22:38,120 INFO L933 BasicCegarLoop]: 392 mSDtfsCounter, 300 mSDsluCounter, 3480 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 3872 SdHoareTripleChecker+Invalid, 7915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5337 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-16 20:22:38,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 3872 Invalid, 7915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 2182 Invalid, 0 Unknown, 5337 Unchecked, 6.7s Time] [2021-11-16 20:22:38,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-11-16 20:22:38,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 449. [2021-11-16 20:22:38,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 272 states have (on average 1.1397058823529411) internal successors, (310), 281 states have internal predecessors, (310), 127 states have call successors, (127), 39 states have call predecessors, (127), 49 states have return successors, (267), 128 states have call predecessors, (267), 126 states have call successors, (267) [2021-11-16 20:22:38,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 704 transitions. [2021-11-16 20:22:38,144 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 704 transitions. Word has length 229 [2021-11-16 20:22:38,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:22:38,144 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 704 transitions. [2021-11-16 20:22:38,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 3.21875) internal successors, (103), 30 states have internal predecessors, (103), 13 states have call successors, (33), 9 states have call predecessors, (33), 11 states have return successors, (31), 12 states have call predecessors, (31), 13 states have call successors, (31) [2021-11-16 20:22:38,144 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 704 transitions. [2021-11-16 20:22:38,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-11-16 20:22:38,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:22:38,146 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:22:38,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-16 20:22:38,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-16 20:22:38,359 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:22:38,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:22:38,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1214278443, now seen corresponding path program 1 times [2021-11-16 20:22:38,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:22:38,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122909844] [2021-11-16 20:22:38,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:22:38,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:22:38,385 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:22:38,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [311125020] [2021-11-16 20:22:38,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:22:38,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:22:38,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:22:38,386 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) [2021-11-16 20:22:38,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-16 20:22:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:22:38,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 2939 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-16 20:22:38,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:22:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-16 20:22:39,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:22:39,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:22:39,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122909844] [2021-11-16 20:22:39,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:22:39,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311125020] [2021-11-16 20:22:39,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311125020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:22:39,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:22:39,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-16 20:22:39,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091360709] [2021-11-16 20:22:39,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:22:39,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-16 20:22:39,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:22:39,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-16 20:22:39,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-16 20:22:39,749 INFO L87 Difference]: Start difference. First operand 449 states and 704 transitions. Second operand has 12 states, 11 states have (on average 9.0) internal successors, (99), 9 states have internal predecessors, (99), 3 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-16 20:22:40,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:22:40,999 INFO L93 Difference]: Finished difference Result 749 states and 1218 transitions. [2021-11-16 20:22:41,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-16 20:22:41,000 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.0) internal successors, (99), 9 states have internal predecessors, (99), 3 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) Word has length 244 [2021-11-16 20:22:41,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:22:41,008 INFO L225 Difference]: With dead ends: 749 [2021-11-16 20:22:41,008 INFO L226 Difference]: Without dead ends: 449 [2021-11-16 20:22:41,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-16 20:22:41,010 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 11 mSDsluCounter, 4028 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4439 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-16 20:22:41,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 4439 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-16 20:22:41,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-11-16 20:22:41,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2021-11-16 20:22:41,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 272 states have (on average 1.1397058823529411) internal successors, (310), 281 states have internal predecessors, (310), 127 states have call successors, (127), 39 states have call predecessors, (127), 49 states have return successors, (264), 128 states have call predecessors, (264), 126 states have call successors, (264) [2021-11-16 20:22:41,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 701 transitions. [2021-11-16 20:22:41,033 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 701 transitions. Word has length 244 [2021-11-16 20:22:41,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:22:41,034 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 701 transitions. [2021-11-16 20:22:41,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.0) internal successors, (99), 9 states have internal predecessors, (99), 3 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (30), 5 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-16 20:22:41,035 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 701 transitions. [2021-11-16 20:22:41,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-16 20:22:41,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:22:41,036 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:22:41,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-16 20:22:41,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-16 20:22:41,257 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:22:41,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:22:41,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1390442585, now seen corresponding path program 2 times [2021-11-16 20:22:41,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:22:41,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706227066] [2021-11-16 20:22:41,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:22:41,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:22:41,285 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:22:41,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907506326] [2021-11-16 20:22:41,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-16 20:22:41,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:22:41,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:22:41,300 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:22:41,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-16 20:22:42,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-16 20:22:42,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 20:22:42,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 2923 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-16 20:22:42,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:22:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-11-16 20:22:42,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:22:42,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:22:42,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706227066] [2021-11-16 20:22:42,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:22:42,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907506326] [2021-11-16 20:22:42,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907506326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:22:42,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:22:42,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-16 20:22:42,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969850678] [2021-11-16 20:22:42,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:22:42,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-16 20:22:42,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:22:42,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-16 20:22:42,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-11-16 20:22:42,836 INFO L87 Difference]: Start difference. First operand 449 states and 701 transitions. Second operand has 13 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 4 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2021-11-16 20:22:44,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:22:44,196 INFO L93 Difference]: Finished difference Result 743 states and 1203 transitions. [2021-11-16 20:22:44,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-16 20:22:44,197 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 4 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) Word has length 238 [2021-11-16 20:22:44,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:22:44,200 INFO L225 Difference]: With dead ends: 743 [2021-11-16 20:22:44,200 INFO L226 Difference]: Without dead ends: 453 [2021-11-16 20:22:44,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-16 20:22:44,202 INFO L933 BasicCegarLoop]: 410 mSDtfsCounter, 12 mSDsluCounter, 4422 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4832 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-16 20:22:44,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 4832 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-16 20:22:44,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-11-16 20:22:44,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 449. [2021-11-16 20:22:44,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 272 states have (on average 1.1397058823529411) internal successors, (310), 281 states have internal predecessors, (310), 127 states have call successors, (127), 39 states have call predecessors, (127), 49 states have return successors, (257), 128 states have call predecessors, (257), 126 states have call successors, (257) [2021-11-16 20:22:44,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 694 transitions. [2021-11-16 20:22:44,223 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 694 transitions. Word has length 238 [2021-11-16 20:22:44,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:22:44,223 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 694 transitions. [2021-11-16 20:22:44,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 4 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2021-11-16 20:22:44,223 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 694 transitions. [2021-11-16 20:22:44,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-16 20:22:44,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:22:44,225 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:22:44,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-16 20:22:44,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:22:44,439 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:22:44,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:22:44,440 INFO L85 PathProgramCache]: Analyzing trace with hash 259758919, now seen corresponding path program 3 times [2021-11-16 20:22:44,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:22:44,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954119111] [2021-11-16 20:22:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:22:44,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:22:44,465 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:22:44,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1668372046] [2021-11-16 20:22:44,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-16 20:22:44,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:22:44,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:22:44,467 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:22:44,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-16 20:22:47,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-16 20:22:47,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 20:22:47,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 228 conjunts are in the unsatisfiable core [2021-11-16 20:22:47,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:22:51,551 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|)))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.base|) (= |c_#memory_int| (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| (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|)))))) is different from true [2021-11-16 20:23:02,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:23:02,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 75 [2021-11-16 20:23:02,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:23:02,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 60 [2021-11-16 20:23:02,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:23:02,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-11-16 20:23:03,166 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 301 proven. 24 refuted. 0 times theorem prover too weak. 136 trivial. 3 not checked. [2021-11-16 20:23:03,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:23:07,694 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_146| Int) (v_DerPreprocessor_6 Int) (v_DerPreprocessor_5 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_151| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~a#1_146| Int)) (let ((.cse0 (+ 32 c_aws_array_list_length_~list.offset))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_151| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_151|) 0 v_DerPreprocessor_5)) c_aws_array_list_length_~list.base) .cse0) 0)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_151| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_151|) 0 v_DerPreprocessor_6)) c_aws_array_list_length_~list.base) .cse0) 0)) (not (= (mod (select (select (store |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_151| (store (select |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_151|) 0 (* |v_aws_mul_size_checked_aws_mul_u64_checked_~a#1_146| |v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_146|))) c_aws_array_list_length_~list.base) (+ 8 c_aws_array_list_length_~list.offset)) 18446744073709551616) 0))))) is different from false [2021-11-16 20:23:07,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:23:07,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954119111] [2021-11-16 20:23:07,699 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:23:07,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668372046] [2021-11-16 20:23:07,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668372046] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:23:07,699 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:23:07,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-11-16 20:23:07,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517105550] [2021-11-16 20:23:07,699 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-16 20:23:07,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-16 20:23:07,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:23:07,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-16 20:23:07,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=368, Unknown=4, NotChecked=78, Total=506 [2021-11-16 20:23:07,700 INFO L87 Difference]: Start difference. First operand 449 states and 694 transitions. Second operand has 19 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 9 states have call successors, (33), 5 states have call predecessors, (33), 7 states have return successors, (31), 7 states have call predecessors, (31), 9 states have call successors, (31) [2021-11-16 20:24:23,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:24:23,134 INFO L93 Difference]: Finished difference Result 1139 states and 1817 transitions. [2021-11-16 20:24:23,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-16 20:24:23,134 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 9 states have call successors, (33), 5 states have call predecessors, (33), 7 states have return successors, (31), 7 states have call predecessors, (31), 9 states have call successors, (31) Word has length 232 [2021-11-16 20:24:23,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:24:23,138 INFO L225 Difference]: With dead ends: 1139 [2021-11-16 20:24:23,138 INFO L226 Difference]: Without dead ends: 830 [2021-11-16 20:24:23,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 246 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 78.1s TimeCoverageRelationStatistics Valid=168, Invalid=1218, Unknown=28, NotChecked=146, Total=1560 [2021-11-16 20:24:23,140 INFO L933 BasicCegarLoop]: 589 mSDtfsCounter, 448 mSDsluCounter, 2905 mSDsCounter, 0 mSdLazyCounter, 4009 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 3494 SdHoareTripleChecker+Invalid, 7495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 4009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3176 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2021-11-16 20:24:23,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [551 Valid, 3494 Invalid, 7495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 4009 Invalid, 0 Unknown, 3176 Unchecked, 13.2s Time] [2021-11-16 20:24:23,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-11-16 20:24:23,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 800. [2021-11-16 20:24:23,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 485 states have (on average 1.1463917525773195) internal successors, (556), 496 states have internal predecessors, (556), 230 states have call successors, (230), 72 states have call predecessors, (230), 84 states have return successors, (419), 231 states have call predecessors, (419), 228 states have call successors, (419) [2021-11-16 20:24:23,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1205 transitions. [2021-11-16 20:24:23,221 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1205 transitions. Word has length 232 [2021-11-16 20:24:23,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:24:23,222 INFO L470 AbstractCegarLoop]: Abstraction has 800 states and 1205 transitions. [2021-11-16 20:24:23,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 9 states have call successors, (33), 5 states have call predecessors, (33), 7 states have return successors, (31), 7 states have call predecessors, (31), 9 states have call successors, (31) [2021-11-16 20:24:23,222 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1205 transitions. [2021-11-16 20:24:23,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-16 20:24:23,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:24:23,223 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:24:23,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-16 20:24:23,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:24:23,424 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:24:23,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:24:23,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1874574343, now seen corresponding path program 2 times [2021-11-16 20:24:23,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:24:23,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910735073] [2021-11-16 20:24:23,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:24:23,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:24:23,452 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:24:23,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958441815] [2021-11-16 20:24:23,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-16 20:24:23,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:24:23,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:24:23,454 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:24:23,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-16 20:24:24,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-16 20:24:24,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 20:24:24,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 2907 conjuncts, 149 conjunts are in the unsatisfiable core [2021-11-16 20:24:24,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:24:24,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-16 20:24:24,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-16 20:24:24,912 INFO L388 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 0 case distinctions, treesize of input 34 treesize of output 25 [2021-11-16 20:24:25,263 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-16 20:24:25,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 32 [2021-11-16 20:24:25,467 INFO L354 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2021-11-16 20:24:25,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2021-11-16 20:24:27,963 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.base| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|))) |c_#memory_$Pointer$.base|)) is different from true [2021-11-16 20:24:36,394 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-16 20:24:36,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 33 [2021-11-16 20:24:36,446 INFO L354 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2021-11-16 20:24:36,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 44 [2021-11-16 20:25:42,459 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.base|)) is different from true [2021-11-16 20:25:44,509 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0))) |c_#memory_$Pointer$.base|)) is different from true [2021-11-16 20:25:44,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:25:44,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 18 [2021-11-16 20:27:21,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-11-16 20:27:21,685 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 268 proven. 53 refuted. 0 times theorem prover too weak. 121 trivial. 22 not checked. [2021-11-16 20:27:21,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:27:50,183 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_169| Int) (v_DerPreprocessor_7 Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_169| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_169|) 0 v_DerPreprocessor_7)) |c_ULTIMATE.start_aws_array_list_push_back_~list#1.base|) (+ 32 |c_ULTIMATE.start_aws_array_list_push_back_~list#1.offset|)) 0))) is different from false [2021-11-16 20:27:50,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:27:50,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910735073] [2021-11-16 20:27:50,187 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:27:50,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958441815] [2021-11-16 20:27:50,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958441815] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:27:50,188 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:27:50,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2021-11-16 20:27:50,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122163851] [2021-11-16 20:27:50,188 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-16 20:27:50,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-16 20:27:50,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:27:50,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-16 20:27:50,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=978, Unknown=54, NotChecked=268, Total=1406 [2021-11-16 20:27:50,189 INFO L87 Difference]: Start difference. First operand 800 states and 1205 transitions. Second operand has 31 states, 26 states have (on average 4.423076923076923) internal successors, (115), 29 states have internal predecessors, (115), 14 states have call successors, (34), 8 states have call predecessors, (34), 12 states have return successors, (32), 13 states have call predecessors, (32), 14 states have call successors, (32) [2021-11-16 20:29:01,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:29:01,003 INFO L93 Difference]: Finished difference Result 1442 states and 2210 transitions. [2021-11-16 20:29:01,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-16 20:29:01,004 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 26 states have (on average 4.423076923076923) internal successors, (115), 29 states have internal predecessors, (115), 14 states have call successors, (34), 8 states have call predecessors, (34), 12 states have return successors, (32), 13 states have call predecessors, (32), 14 states have call successors, (32) Word has length 232 [2021-11-16 20:29:01,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:29:01,008 INFO L225 Difference]: With dead ends: 1442 [2021-11-16 20:29:01,008 INFO L226 Difference]: Without dead ends: 875 [2021-11-16 20:29:01,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 264 SyntacticMatches, 15 SemanticMatches, 51 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 266.6s TimeCoverageRelationStatistics Valid=198, Invalid=2091, Unknown=79, NotChecked=388, Total=2756 [2021-11-16 20:29:01,012 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 163 mSDsluCounter, 2628 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 3034 SdHoareTripleChecker+Invalid, 4393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2683 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-16 20:29:01,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 3034 Invalid, 4393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1557 Invalid, 0 Unknown, 2683 Unchecked, 5.7s Time] [2021-11-16 20:29:01,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-11-16 20:29:01,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 838. [2021-11-16 20:29:01,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 511 states have (on average 1.1448140900195696) internal successors, (585), 522 states have internal predecessors, (585), 238 states have call successors, (238), 76 states have call predecessors, (238), 88 states have return successors, (404), 239 states have call predecessors, (404), 236 states have call successors, (404) [2021-11-16 20:29:01,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1227 transitions. [2021-11-16 20:29:01,052 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1227 transitions. Word has length 232 [2021-11-16 20:29:01,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:29:01,053 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1227 transitions. [2021-11-16 20:29:01,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 26 states have (on average 4.423076923076923) internal successors, (115), 29 states have internal predecessors, (115), 14 states have call successors, (34), 8 states have call predecessors, (34), 12 states have return successors, (32), 13 states have call predecessors, (32), 14 states have call successors, (32) [2021-11-16 20:29:01,053 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1227 transitions. [2021-11-16 20:29:01,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-16 20:29:01,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:29:01,055 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:29:01,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-16 20:29:01,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-16 20:29:01,278 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:29:01,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:29:01,278 INFO L85 PathProgramCache]: Analyzing trace with hash -464921111, now seen corresponding path program 1 times [2021-11-16 20:29:01,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:29:01,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390425795] [2021-11-16 20:29:01,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:29:01,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:29:01,309 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 20:29:01,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1061059546] [2021-11-16 20:29:01,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:29:01,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:29:01,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:29:01,311 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:29:01,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-16 20:29:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:29:01,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 2901 conjuncts, 71 conjunts are in the unsatisfiable core [2021-11-16 20:29:01,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:29:05,547 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (= |c_#memory_int| (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| (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|))))) is different from true [2021-11-16 20:29:22,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:29:22,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-16 20:29:22,319 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-11-16 20:29:22,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2021-11-16 20:29:22,418 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 285 proven. 7 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-16 20:29:22,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:29:25,031 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_181| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_173| Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~a#1_173| Int)) (= (mod (select (select (store |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_181| (store (select |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_181|) 0 (* |v_aws_mul_size_checked_aws_mul_u64_checked_~a#1_173| |v_aws_mul_size_checked_aws_mul_u64_checked_~b#1_173|))) c_aws_array_list_length_~list.base) (+ 8 c_aws_array_list_length_~list.offset)) 18446744073709551616) 0)) is different from false [2021-11-16 20:29:25,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:29:25,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390425795] [2021-11-16 20:29:25,035 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 20:29:25,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061059546] [2021-11-16 20:29:25,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061059546] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:29:25,035 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:29:25,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-11-16 20:29:25,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938663879] [2021-11-16 20:29:25,036 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-16 20:29:25,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-16 20:29:25,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:29:25,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-16 20:29:25,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=259, Unknown=6, NotChecked=66, Total=380 [2021-11-16 20:29:25,037 INFO L87 Difference]: Start difference. First operand 838 states and 1227 transitions. Second operand has 19 states, 17 states have (on average 6.117647058823529) internal successors, (104), 16 states have internal predecessors, (104), 9 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (30), 8 states have call predecessors, (30), 9 states have call successors, (30) Killed by 15